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# Issaquah Lumber

## Sitemaps
- [XML Sitemap](https://issaquahlumber.com/sitemap_index.xml): Includes all crawlable and indexable pages.

## Posts
- [Fire-Retardant Wood Is Moving Up the Specification List](https://issaquahlumber.com/fire-retardant-wood-is-moving-up/): A year ago, we took a deep dive into fire-treated wood: what it is, how it works, and what contractors, builders, and architects need to know when specifying it.
- [Why the Best Wood Isn’t Always the Same Wood](https://issaquahlumber.com/why-the-best-wood-isnt-always-the-same-wood/): Four Pacific Northwest projects show how design intent, climate, maintenance, installation, and long-term performance influence material choices.
- [Issaquah Lumber’s FSC Chain of Custody and Why Supply Chain Transparency Matters](https://issaquahlumber.com/issaquah-lumbers-fsc-chain-of-custody-and-why-supply-chain-transparency-matters/): Years ago, when a client asked where a wood product came from, “from our supplier” was usually enough. In the last five or more years, that answer doesn’t cut it.
- [Performance Meets Beauty: A Guide to Wood for Outdoor Living](https://issaquahlumber.com/performance-meets-beauty-a-guide-to-wood-for-outdoor-living/): Here in the Pacific Northwest, our decks earn their keep. They weather the winter rains, endure moss and mildew...
- [Is Your Deck Ready for Summer? A Pacific Northwest Inspection Guide](https://issaquahlumber.com/is-your-deck-ready-for-summer/): Here in the Pacific Northwest, our decks earn their keep. They weather the winter rains, endure moss and mildew...
- [Sustainable sophistication: the role of biophilia in design](https://issaquahlumber.com/sustainable-sophistication-the-role-of-biophilia-in-design/): Picture a room that feels immediately right: exposed timber beams, a cedar-clad wall, or wide-plank hardwood floors that anchor...
- [Issaquah Lumber Awarded LBM Journal 2026 Dealer of the Year](https://issaquahlumber.com/issaquah-lumber-awarded-lbm-journal-2026-dealer-of-the-year/): The premium wood products supplier was selected from more than 70 nationwide nominations based on the company’s history and innovation achievements.
- [Custom Trim, Perfect Fit: The Art of Millwork from Issaquah Lumber](https://issaquahlumber.com/millwork-trim/): When it comes to millwork and trim, the difference between standard and exceptional is in the details. They are...
- [Fall Deck Cleaning](https://issaquahlumber.com/fall-deck-cleaning/): There’s been a shift in the air — cooler mornings, earlier sunsets, and the feeling that another Pacific Northwest...
- [Issaquah Lumber teams up with GRAD Concept to highlight premium wood innovations at the International Builders’ Show](https://issaquahlumber.com/issaquah-lumber-teams-up-with-grad-concept-to-highlight-premium-wood-innovations-at-the-international-builders-show/): Celebrating Craftsmanship: Showcase your Build. Inspire the Next. Your Project Belongs in the Spotlight There’s something deeply satisfying
- [Issaquah Lumber Granted Forest Stewardship Council Group Chain of Custody Registration Certificate](https://issaquahlumber.com/issaquah-lumber-granted-forest-stewardship-council-group-chain-of-custody-registration-certificate/): ISSAQUAH, WASH., January 22, 2025 – Issaquah Lumber, a Pacific Northwest specialty building products supplier, is pleased to announce that it received a Group Chain of Custody Registration certificate verifying that forest-based materials are produced according to the rigorous standard set by the Forest Stewardship Council (FSC®).
- [Issaquah Lumber adds GRAD® System to its Portfolio of Products](https://issaquahlumber.com/issaquah-lumber-adds-grad-system-to-its-portfolio-of-products/): The Pacific Northwest supplier—one of four nationwide—offers custom-milled wood products for the Grad® System.
- [Custom Milling/Photo Contest 2025](https://issaquahlumber.com/custom-milling-photo-contest-2025/): There’s something deeply satisfying about creating with wood that’s not only premium quality but also sustainably sourced...
- [Make the Most of PNW Summer: It’s the build season—and the clock’s ticking.](https://issaquahlumber.com/make-the-most-of-pnw-summer-its-the-build-season-and-the-clocks-ticking/): In the Pacific Northwest, summer is short, sweet, and packed with opportunity. Now is...
- [The 9 411 on Fire-Treated Wood: What Contractors, Builders, and Architects Need to Know](https://issaquahlumber.com/the-9-411-on-fire-treated-wood-what-contractors-builders-and-architects-need-to-know/): Building codes and design preferences are evolving as fire risks continue to climb, particularly in wildland-urban...
- [Modified Wood](https://issaquahlumber.com/modified-wood/): Over the last twenty years, the ability to enhance the properties of wood species and their...
- [Issaquah Lumber Teams Up With Grad Concept To Highlight Premium Wood Innovations At The International Builders’ Show](https://issaquahlumber.com/issaquah-lumber-teams-up-with-grad-concept-to-highlight-premium-wood-innovations-at-the-international-builders-show-2/): Issaquah Lumber will showcase its Cascade Collection products, including Accoya, Arbor Wood, Kebony, and LDCwood® designed for the Grad® System. Visit booth SU7112.
- [Issaquah Lumber Adds The Grad® System To Its Portfolio Of Products](https://issaquahlumber.com/issaquah-lumber-adds-the-grad-system-to-its-portfolio-of-products/): The Pacific Northwest supplier—one of four nationwide—offers custom-milled wood products for the Grad System.
- [Issaquah Lumber Granted Forest Stewardship Council Group Chain Of Custody Registration Certificate](https://issaquahlumber.com/issaquah-lumber-granted-forest-stewardship-council-group-chain-of-custody-registration-certificate-2/): The Pacific Northwest supplier is part of the Sustainable Northwest group of small businesses dedicated to natural resource solutions.
- [DIY Accent Wall](https://issaquahlumber.com/diy-accent-wall/): Wood is a timeless and inviting option for DIY accent walls. Its inherent natural beauty and warmth create a sense of comfort and tranquility, making it an ideal choice for any room. Beyond its aesthetic appeal, wood also offers practical benefits, such as sound absorption and insulation.
- [Redmond Senior + Community Center](https://issaquahlumber.com/redmond-senior-community-center/): A community hub, the Redmond Senior Center abruptly closed in 2019 because its weather-resistant barrier (WRB) failed, causing structural damage from water infiltration. Mold and structural damage to the timber framing meant tearing the facility down for a new state-of-the-art, multi-purpose, multi-generational building for the whole community.
- [Interior Wall Systems](https://issaquahlumber.com/interior-wall-systems/): Ready to be inspired? Visit our showroom today and experience the beauty and versatility of our interior wall systems firsthand. Or contact us to discuss your unique project and discover how we can help you transform your space.
- [The Future of Decking: Unlocking the Power of the Grad System](https://issaquahlumber.com/the-future-of-decking-unlocking-the-power-of-the-grad-system/): Outdoor living spaces are extensions of our homes, and decking is at the heart of them. A well-designed deck provides the perfect backdrop for relaxing, entertaining, and enjoying the beauty of nature. Due to aesthetic appeal, homeowners still seek natural wood or a sustainable alternative that mimics wood's natural grain. Today, homeowners can be assured that with new systems, their decks will stand the test of time with minimal upkeep, longevity, and sustainability.
- [Transforming Outdoor Living Spaces with Hardwood Decking](https://issaquahlumber.com/transforming-outdoor-living-spaces-with-hardwood-decking/): The Pacific Northwest is a beautiful region, and fortunate people who live in various places, such as Seattle, Issaquah, Bellevue, Bainbridge Island, WA, and surrounding areas, can easily confirm this. Outdoor living spaces become an extension of the living area during the long stretches of pleasant weather, offering a place to relax, entertain, and commune with nature. However, for the backyard retreat to be transfigured into a deck sanctuary or patio paradise, the use of materials is of principal importance. Hardwood decking then comes into play as a saving solution.
- [How Hardwood Siding Transforms Outdoor Spaces](https://issaquahlumber.com/how-hardwood-siding-transforms-outdoor-spaces/): First impressions hold immense weight in homeownership. According to the National Association of Realtors®, curb appeal can significantly impact a property's value. A well-maintained and visually striking exterior not only enhances your home's aesthetic but also speaks volumes about your commitment to quality and craftsmanship. For those seeking to elevate their outdoor space and create a truly timeless statement, hardwood siding emerges as a unique and luxurious option.
- [5 Exciting Hardwood Flooring Trends for Your Next Renovation!](https://issaquahlumber.com/5-exciting-hardwood-flooring-trends-for-your-next-renovation/): This extensive guide will look at five fascinating hardwood flooring trends causing a stir in the innovative flooring design community. Every homeowner wishing to up their interior design game can find something they like in these trends, which range from wide planks to matte finishes, herringbone patterns to varied widths, and contemporary grey tones.
- [Why are specialty hardwoods the Hidden Gems of Design?](https://issaquahlumber.com/why-are-specialty-hardwoods-the-hidden-gems-of-design/): In the realm of architecture and design, the significance of materials cannot be overstated. In addition to their practical application, the materials selected for a project significantly impact its longevity, aesthetic appeal, and environmental impact. Experts like architects, good-quality house manufacturers, and business developers should cautiously examine each component to accomplish the plan. Exotic hardwoods in Issaquah, WA, stand apart among these overlooked yet truly great individuals who can take a venture higher than ever.
- [10 Key Points To Consider When Choosing Hardwood Stairs](https://issaquahlumber.com/10-key-points-to-consider-when-choosing-hardwood-stairs/): When upgrading your home, few things can make a more significant impact than a beautifully crafted hardwood staircase. Hardwood stairs not only add a touch of elegance but also increase the value of your home. However, choosing the right hardwood stairs for your space can be daunting. There are numerous factors to consider, and your decision will impact your home's aesthetic appeal and functionality. This blog delves into the ten key points you should consider when selecting hardwood stairs, catering to the audience in places like Issaquah, Seattle, Redmond, Bellevue, and Bainbridge Island in Washington State.
- [How to Upgrade Your Building’s Hardwood Flooring with Grad Concept](https://issaquahlumber.com/how-to-upgrade-your-buildings-hardwood-flooring-with-grad-concept/): Thinking of upgrading your property's hardwood flooring? You're at the right place. It's the age of modern alternatives, and it was about time the hardwood revolutionized a convenient flooring system that saves installation time, charges, and energy.
- [Expert Tips for Picking the Right Exotic Hardwood](https://issaquahlumber.com/expert-tips-for-picking-the-right-exotic-hardwood/): Few interior design and carpentry materials have the timeless beauty and fascination that exotic hardwoods in Bainbridge Island, WA, have. These woods can transform ordinary places into remarkable works of art thanks to their intricate patterns, deep tones, and distinctive textures. Issaquah Cedar is a renowned provider of specialty lumber and the best hardwood throughout the United States, serving as a beacon of excellence. This thorough manual, which delves deeply into the art and science of choosing exotic hardwoods, is written for an educated and well-read American audience.
- [12 Maintenance Tips for Preserving & Protecting Specialty Lumber](https://issaquahlumber.com/12-maintenance-tips-for-preserving-protecting-specialty-lumber/): Craftsmen and lovers of woodworking value specialty timber. It is regarded for various projects, from exquisite furniture designs to gorgeous architectural aspects, thanks to its distinctive qualities and great quality. If you have the good fortune to work with specialty timber from Issaquah Cedar, you're in for a treat. Issaquah Cedar is a well-known specialty wood shop in WA, including premium hardwood material and specialty timber in the US, providing a variety of alternatives to meet the various demands of craftsmen and artisans.
- [How Custom Molding Adds Elegance to Your Home](https://issaquahlumber.com/how-custom-molding-adds-elegance-to-your-home/): Materials like specialty lumber and hardwood can change a home's design and decor space. These materials are the foundations of elegance and sophistication, capable of elevating any custom interior accents to new levels of luxury. Among the various industry competitors, Issaquah Cedar stands out as a model of quality, delivering the finest hardwood and specialty timber throughout the United States. This article will delve into the enthralling realm of custom molding in Issaquah, WA, and how it may elevate the elegance of your home design accents.
- [9 Benefits of Installing Custom Millwork in Your Home](https://issaquahlumber.com/9-benefits-of-installing-custom-millwork-in-your-home/): Few solutions are as varied and effective as custom millwork when upgrading your house's aesthetics and utility. The US's leading hardwood and specialty timber supplier, Issaquah Cedar, is aware of the importance of millwork in transforming houses into unique havens. Custom millwork's functional and visually pleasant benefits include intricate curved moldings and distinctive cabinetry. In this blog post, we'll examine nine strong arguments for how ordering custom millwork from Issaquah Cedar can entirely revamp your living spaces.
- [Custom Burl Boxes](https://issaquahlumber.com/custom-burl-boxes/): Damon Cortel is local craftsman and well known for his skillset. Damon currently has several handmade burl boxes showcased in our shop. These boxes make wonderful gifts. Come get one before they're gone.
- [I’ts Not A Big Diehl](https://issaquahlumber.com/its-not-a-big-diehl/): It's a bitter sweet day here at Issaquah Cedar and Lumber.
- [Are Thermally Modified Products Right For You?](https://issaquahlumber.com/are-thermally-modified-products-right-for-you/): With growing competition to release the latest products for residential and commercial applications, we enter into the brief overview of thermally modified woods.
- [Winter Projects. What’s Your Theme?](https://issaquahlumber.com/winter-projects-whats-your-theme/): Most people view us predominantly as an exterior based, high end lumber yard.
- [Seattle Modern Home Tour 2019](https://issaquahlumber.com/seattle-modern-home-tour-2019/): Although Issaquah Cedar and Lumber did not have any direct involvement with this particular event, I was fortunate to register and tour several of these homes.
- [Wood touches for backyard gardens (and bats and chickens)](https://issaquahlumber.com/wood-touches-for-backyard-gardens-and-bats-and-chickens/): As spring unfurls and summer nears, Puget Sound house dwellers daydream about long days in their backyards. Gardeners prepare to plant and cultivate edibles, flowers and plants. Entertainers look forward to enjoying warm weather, watching wildlife, and dining alfresco on the patio or picnicking on the grass. Every spring, staff at Issaquah Cedar and Lumber in Issaquah help customers choose the right planks for raised beds, vertical planters, birdhouses and bat boxes, and other garden features. Here are some tips on what’s possible with cedar.
- [5 ways to create curb appeal with wood](https://issaquahlumber.com/5-ways-to-create-curb-appeal-with-wood/): When homeowners consider their place’s curb appeal – how attractive it looks from the street – they often think about exterior paint colors and landscaping. But more and more, they’re leveraging wooden touches to connect their home to its place in the Northwest. This is particularly true among houses built from the 1950s through the 1980s – the properties most frequently changing hands right now in the hot Seattle market, says Stacy Kovats, who directs marketing at century-old Issaquah Cedar in Issaquah, a retailer and manufacturer working with cedar, pine and many exotic hardwoods. Buyers of homes from this era want to update exteriors to put a personal spin or new look on their property, while homeowners seek to modernize their exterior for both the potential financial gain and pure aesthetics. Here are five ways Kovats says homeowners can use wood to bolster a home’s curb appeal.
- [Have You Caught the Latest Buzz?](https://issaquahlumber.com/have-you-caught-the-latest-buzz/): Beekeeping! We can help you plan a stylish hive, or chat about the bees we keep.  Check out the workshops offered through Puget Sound Beekeepers Association.  It's a fascinating and sustainable hobby, that results in a delicious end product!
- [The Changing Face of Cedar](https://issaquahlumber.com/the-changing-face-of-cedar/): Over the years, Pete Seyl and his wife have traveled to far off places, taking in various cultures and developing a love of indigenous art work, American Indian in particular.  Their collection of masks from Africa, Central America, and Asia has grown through the years but was missing the coveted NW Indian mask, which are rare finds. Pete had been contemplating carving a mask himself in the NW style, and learned of a seminar led by Jay Haavik, through Greg Blomberg of Lopez Island, who is a carver and and maker of fine NW Indian carving tools (www.rockisland.com) which "was an absolute wonder to work with, perfect for carving my type of project".  The seminar was "the perfect launching pad for my project, as Jay is extremely experienced and patient and enjoyable"  Pete took the 4 day seminar at the Sitka Art Center (www.sitkacenter.org) in Lincoln City Oregon from Jay Haavik (www.jayhaavik.com) a local Seattle artist and carver. Pete thoroughly enjoyed the learning experience "eight old farts sitting around carving their projects, loads of fun". Tzunukua (aka Dzunukua/Tsunukua) as legend has it, is the old hag of the forest up the BC Coast who the children were told would eat them if they wandered to far into the woods by themselves.  Pete's Tzunukua mask is carved of Western Red Cedar, white horse hair, replicated abalone, and teeth made of shells he absconded from a decorated coconut his daughter had brought him from her Peace Corps tour in Africa. Countless hours went into the creation of this work of art, when asked if he'd do it again, "yes!"  We're tracking down just the right block for his next project.
- [Have You Noticed the Movement in Your Neighborhood Yet?](https://issaquahlumber.com/have-you-noticed-the-movement-in-your-neighborhood-yet/): Have you noticed the movement in your neighborhood yet?  We're selling Cedar for neighborhood raised garden beds like crazy, 78 already this season!  Customers are coming in bagging up shavings for their backyard chickens. This write up in Sunset is an interesting highlight on growing local.
- [Capture the Playhouse that Lives in Your Child’s Imagination](https://issaquahlumber.com/capture-the-playhouse-that-lives-in-your-childs-imagination/): http://www.ronhazelton.com
- [Does Your Deck Look Like You Live in the Hoh Rain Forest?](https://issaquahlumber.com/does-your-deck-look-like-you-live-in-the-hoh-rain-forest/): We've got a solution, literally. Penofin Brightener removes mildew and mold from Cedar, with rave reviews. Learn more about Penofin and how to bring back the beauty of your Cedar decking.
- [We Have Cedar to Help You Build More Than a Simple Cage](https://issaquahlumber.com/we-have-cedar-to-help-you-build-more-than-a-simple-cage/): www.backyardchickens.com
- [Seattle Home Show!](https://issaquahlumber.com/seattle-home-show/): Our whole crew has been having a great time at the Seattle Home Show!  We're in booth #1110 and have been receiving rave reviews on the IC Railing system. Check out the details at Seattle Home and Garden Show
- [An IC Railing Installation](https://issaquahlumber.com/an-ic-railing-installation/): This IC Railing installation turned out great!  Aren't the corners fabulous?!?
- [Stainless Steel Railing](https://issaquahlumber.com/stainless-steel-railing/): We are proud to announce our partnership with GotStainless rail systems. Gotstainless is a solid rod (no cables here) rail system that can be used inside or out. The installation is very DIY friendly (4 bolts and a couple screws and your ready to go) and can be done at anytime during the job. Stop in and see our display.
- [Your Own Personal Oasis!](https://issaquahlumber.com/your-own-personal-oasis/): Our Live Edge cabin is here! Stop in to see a beautiful example of craftsmanship and design. It comes with all the important amenities, sink, refrigerator, power, and hardwood floors throughout. It has been inspected, and is small enough that you don't need a permit to put it in your backyard, just set it down on piers and you are ready to enjoy the piece and quiet of your own personal Oasis.

## Pages
- [Legacy Western Red Cedar – Tight Knot](https://issaquahlumber.com/olympic-collection/legacy-western-red-cedar-tight-knot/): Similar to clear grades, knotty western red cedar offers the same durability while showcasing natural knots and character. It is often selected for siding and architectural applications where a more rustic, natural look and texture is intended.  
- [Legacy Wood Western Red Cedar Clear](https://issaquahlumber.com/olympic-collection/legacy-wood-western-red-cedar-clear/): A fine and uniform appearance with minimal knots and a smooth surface, clear western red cedar is naturally resistant to moisture and decay. Specified for exterior siding, soffits, and architectural applications where a refined, consistent aesthetic is desired.
- [Imbue Radiata Pine](https://issaquahlumber.com/olympic-collection/imbue-radiata-pine/): Imbue sets a new standard for thermally modified timber, sourced from FSC®-certified Radiata Pine grown in biodiverse New Zealand plantations. Rather than drawing on old-growth forests, Imbue uses rapidly renewable "New Growth" timber, enhanced by a patented heat-modification process to deliver exceptional stability, durability, and weather resistance. The result is a sustainable, high-performance feature timber with distinctive vertical grain — well-suited for siding, cladding, soffits, screening, and architectural applications both inside and out.
- [THERMOWOOD® Tight Knot Nordic Spruce](https://issaquahlumber.com/olympic-collection/thermowood-tight-knot-nordic-spruce/): ThermoWood Tight Knot Nordic Spruce brings a bright, Scandinavian-inspired appearance accented by subtle, sound knots. Enhanced durability and moisture resistance make it a versatile option for siding, soffits, and exterior cladding systems.
- [THERMOWOOD® Nordic Pine](https://issaquahlumber.com/olympic-collection/thermowood-nordic-pine/): Harvested from northern European forests, ThermoWood Nordic Pine features a defined grain pattern and dependable performance. It is ideal for use in exterior siding and decking applications where natural character and stability are priorities.
- [Thermowood VG Southern Yellow Pine](https://issaquahlumber.com/olympic-collection/thermowood-vg-southern-yellow-pine/): With its straight, vertical grain pattern and reduced movement, Arbor Wood VG Southern Yellow Pine provides a crisp, architectural appearance. It’s an excellent solution for high-visibility siding, soffits, and projects requiring uniformity and precision.
- [Thermowood Southern Yellow Pine](https://issaquahlumber.com/olympic-collection/thermowood-southern-yellow-pine/): Dense and structurally sound, ThermoWood Southern Yellow Pine delivers proven strength with improved dimensional stability. It’s well-suited for decking, siding, and exterior applications where durability and long-term performance matter.
- [ThermoWood Poplar](https://issaquahlumber.com/olympic-collection/thermowood-poplar/): Clean, consistent, and easy to work with, ThermoWood Poplar offers a smooth surface and dependable stability. Ideal for modern siding and soffit applications, it delivers a refined look with reliable exterior performance.
- [ThermoWood  Ayous](https://issaquahlumber.com/cascade-collection/thermowood-ayous/): ThermoWood Ayous is a lightweight hardwood known for its smooth texture and exceptional stability. Its reduced weight and consistent profile make it well-suited for rainscreen systems, vertical cladding, and contemporary façade designs.
- [Thermowood Ash](https://issaquahlumber.com/olympic-collection/thermowood-ash/): ThermoWood Ash combines the durability of hardwood with a bold, expressive grain. Its enhanced stability and moisture resistance make it a strong choice for exterior cladding, decking, and other architectural applications that require resilience and visual impact.
- [Accoya Natural](https://issaquahlumber.com/olympic-collection/accoya-natural/): Accoya Natural Accoya Natural 1x6 Parallelogram 1x4 Shiplap PRODUCT SPECS Sizes: 1x4, 1x6, 1x8, 5/4x6, 5/4x8 Lengths: 8' to 16' Even Only Thickness: .75" & 1" Texture: Architectural, Heritage, Artisan, Heirloom Application: Decking & Siding Grade: Clear Durability: Class 1 Warranty: 50 years above ground, 25 years below ground and freshwater Accoya Natural Warranty Accoya Siding Guidelines Standard to custom profiles are available and compatible with the GRAD System.
- [Accoya Grey](https://issaquahlumber.com/olympic-collection/accoya-grey/): Accoya Grey Accoya Gray 1x6 Shiplap 1.25x6 S4S 1x6 Parallelogram PRODUCT SPECS Sizes: 1x4, 1x6, 5/4x6 Lengths: 8' to 16' Even only Thickness: .75" and 1" Texture: Architectural, Heritage, Artisan, Heirloom Application: Decking & Siding Grade: Clear Durability: Class 1 Warranty: 50 years above ground, 25 years below ground and freshwater Accoya Grey Warranty Accoya Siding Guidelines Accoya Siding WUI Compliance Standard to custom profiles are available and compatible with the GRAD System.
- [VG Hemlock](https://issaquahlumber.com/olympic-collection/vg-hemlock/): A consistent, tight, straight grain and a sleek, refined surface. Thermal modification deepens its tone to a warm, uniform brown, making it ideal for projects that call for a clean, contemporary aesthetic.
- [Tight Knot Western Red Cedar Decking](https://issaquahlumber.com/products/exterior/wood-decking/tight-knot-western-red-cedar-decking/): Tight Knot Western Red Cedar Decking WRC knotty Cedar Knotty Western Red PRODUCT SPECS Sizes: 1x4, 1x6, 1x8, 5/4x4, 5/4x6 Lengths: 8’ to 16’ Even Thickness: .75" & 1" Profiles: Cascade Collection, Channel, Parallelogram, S4S, T&G, Custom Texture: Architectural, Artisan, Heritage, Heirloom Grade: Tight Knot Standard to custom profiles are available and compatible with the GRAD System.
- [Tight Knot Nordic Spruce Decking](https://issaquahlumber.com/products/exterior/wood-decking/tight-knot-nordic-spruce-decking/): Tight Knot Nordic Spruce
- [Southern Yellow Pine Decking](https://issaquahlumber.com/products/exterior/wood-decking/southern-yellow-pine-decking/): Southern Yellow Pine Decking PRODUCT SPECS Sizes: T&G: 1x6-3/4" x 6-1/4" with 5" face coverage, Fluted T&G: 1x5-1/4" x 6-1/4" with 5" face coverage, Custom and Shiplap Lengths: 6’ to 16’ evens Texture: Smooth Grade: C or better, clear Warranty: 20-years TMW Warranty Installation Guide CSI Specs Mechanical Specs ANSI Slip Testing Standard to custom siding profiles are available and compatible with the GRAD System through our Cascade Collection.
- [Legacy Wood Siding – Tight Knot Western Red Cedar](https://issaquahlumber.com/products/exterior/siding/legacy-wood-siding-tight-knot-western-red-cedar/): Tight Knot Western Red Cedar Siding WRC knotty Cedar Knotty Western Red PRODUCT SPECS Sizes: 1x4, 1x6, 1x8, 5/4x4, 5/4x6 Lengths: 8’ to 16’ Even Thickness: .75" & 1" Profiles: Cascade Collection, Channel, Parallelogram, S4S, T&G, Custom Texture: Architectural, Artisan, Heritage, Heirloom Application: Siding Grade: Tight Knot Standard to custom profiles are available and compatible with the GRAD System.
- [VG Hemlock](https://issaquahlumber.com/cascade-collection/vg-hemlock/): A consistent, tight, straight grain and a sleek, refined surface. Thermal modification deepens its tone to a warm, uniform brown, making it ideal for projects that call for a clean, contemporary aesthetic.
- [Tight Knot Nordic Spruce Siding](https://issaquahlumber.com/products/exterior/siding/tight-knot-nordic-spruce/): Tight Knot Nordic Spruce Siding Natural Nordic SpruceNordic Spruce Saddle Heirloom Wire-Brushed FinishNordic Spruce Saddle Artisan Soft-Brush FinishNordic Spruce Saddle Architectural Smooth FinishNordic Spruce Black Architectural Smooth FinishNordic Spruce Black Artisan Soft-Brush FinishNordic Spruce Black Heirloom Wire-Brushed FinishNordic Spruce Coastline Architectural Smooth FinishNordic Spruce Coastline Heirloom Wire-Brushed FinishNordic Spruce Morning Dew Artisan Soft-Brushed Finish PRODUCT SPECS Sizes: 1x4, 1x6, 1x8, 5/4x6 Lengths: 6’ to 12' OE, 8' to 16" Even Only, 3' to 20' Random Thickness: .75" to 1" Profiles: Cascade Collection, Parallelogram, S4S, T&G, Custom Texture: Architectural, Artisan, Heritage, Heirloom Grade: Tight Knot Durability: Class 1 Warranty: 20 years Cladding Installation Guide Standard to custom profiles are available and compatible with the GRAD System.
- [Ayous Siding](https://issaquahlumber.com/products/exterior/siding/ayous/): Ayous Siding   Natural Ayous   Ayous Battleship Architectural Smooth   Ayous Battleship Artisan Soft-Brushed Finish   Ayous Battleship Heirloom Finish   Ayous Black Architectural Smooth Finish   Ayous Black Artisan Soft-Brushed Finish   Ayous Black Heirloom Wire-Brushed Finish   Ayous Coastline Architectural Smooth Finish   Ayous Coastline Heirloom Wire-Brushed Finish   Ayous Morning Dew Architectural Smooth Finish   Ayous Morning Dew Artisan Soft-Brushed Finish   Ayous Morning Dew Heirloom Wire-Brushed Finish   Ayous Saddle Architectural Smooth Finish   Ayous Saddle Artisan Soft-Brushed Finish   Ayous Saddle Heirloom Wire-Brushed Finish   PRODUCT SPECS Sizes: 1x4, 1x6, 1x8, 5/4x4, 5/4x6, 5/4x8 Lengths: 3’ to 20’ Random Profiles: Cascade Collection, Parallelogram, S4S, T&G, Custom Texture: Architectural, Artisan, Heritage, Heirloom Grade: Clear Warranty: 20 years Cladding Installation Guide Standard to custom profiles are available and compatible with the GRAD System.
- [VG Southern Yellow Pine Siding](https://issaquahlumber.com/products/exterior/siding/thermally-modified-wood-vg-southern-yellow-pine/): VG Southern Yellow Pine Siding   Natural VG SYP   VG SYP - Coastline Rough Sawn   VG SYP Battleship Architectural Smooth Finish   VG SYP Battleship Artisan Soft-Brushed Finish   VG SYP Battleship Heirloom Wire-Brushed Finish   VG SYP Battleship Heritage Resawn Finish   VG SYP Black Architectural Smooth Finish   VG SYP Black Artisan Soft-Brushed Finish   VG SYP Black Heirloom Wire-Brushed Finish   VG SYP Black Heritage Resawn Finish   VG SYP Coastline Architectural Smooth Finish   VG SYP Coastline Artisan Soft-Brushed Finish   VG SYP Coastline Heirloom Wire-Brushed Finish   VG SYP Coastline Heritage Resawn Finish   VG SYP Morning Dew Architectural Smooth Finish   VG SYP Morning Dew Artisan Soft-Brushed Finish   VG SYP Morning Dew Heirloom Wire-Brushed   VG SYP Morning Dew Heritage Resawn Finish   VG SYP Saddle Architectural Smooth Finish   VG SYP Saddle Artisan Soft-Brushed Finish   VG SYP Saddle Heirloom Wire-Brushed Finish   PRODUCT SPECS Sizes: 1x4, 1x6, 1x8, 5/4x4, 5/4x6, 3" to 7" Lengths: 6’ to 16’ OE only Thickness: .75" & 1" Profiles: Cascade Collection, Parallelogram, S4S, T&G, Custom Texture: Architectural, Artisan, Heritage, Heirloom Grade: VG Warranty: 20 years Standard to custom profiles are available and compatible with the GRAD System.
- [Olympic Collection](https://issaquahlumber.com/olympic-collection/): Issaquah Lumber is proud to offer the Olympic Collection by Amble Wood Co. — a made-to-order range of tongue-and-groove and custom-milled wood products designed to fit the GRAD System. Whether you're a builder, architect, or homeowner working on a high-performance siding, cladding, or specialty millwork project, our team is here to help you spec, source, and deliver it right.
- [Imbue Radiata Pine](https://issaquahlumber.com/cascade-collection/imbue-radiata-pine/): Imbue sets a new standard for thermally modified timber, sourced from FSC®-certified Radiata Pine grown in biodiverse New Zealand plantations. Rather than drawing on old-growth forests, Imbue uses rapidly renewable "New Growth" timber, enhanced by a patented heat-modification process to deliver exceptional stability, durability, and weather resistance. The result is a sustainable, high-performance feature timber with distinctive vertical grain — well-suited for siding, cladding, soffits, screening, and architectural applications both inside and out.
- [Thermally Modified Wood – VG Southern Yellow Pine](https://issaquahlumber.com/thermally-modified-wood-vg-southern-yellow-pine/): VG Southern Yellow Pine A bolder, more pronounced grain pattern with natural variation and character. Thermal modification brings out rich amber and caramel tones, adding warmth and visual depth to projects where grain character is integral to the design. TMW VG Southern Yellow Pine VG Southern Yellow Pine PRODUCT SPECS Sizes: 1x6 Lengths: 6’ to 16’ OE only Thickness: .75" Texture: Architectural, Artisan, Heritage, Heirloom Grade: VG
- [The Mountain Home](https://issaquahlumber.com/project-gallery/the-mountain-home-in-roslyn/): For a first-time installation, The Mountain Home showcases what is possible when premium wood, a smart system, and a careful crew come together: a facade that'll hold up and, over time, still look purpose-built.
- [VG Hemlock Siding](https://issaquahlumber.com/products/exterior/siding/hemlock-siding/): VG Hemlock Siding VG Natural HemlockVG HemlockHemlock Morning Dew Architectural Smooth FinishHemlock Morning Dew Heirloom Wire-Brushed FinishHemlock Saddle Architectural Smooth FinishHemlock Saddle Heirloom Wire-Brushed FinishVG Hemlock Battleship Architectural Smooth FinishVG Hemlock Coast Line Heirloom Wire-Brushed FinishVG Hemlock Coastline Architectural Smooth FinishVG Hemlock Coastline Artisan Soft-Brushed Finish PRODUCT SPECS Sizes: 1x6 Lengths: 6’ to 16’ OE only Thickness: .75" Texture: Architectural, Artisan, Heritage, Heirloom Grade: VG
- [Thermowood VG Southern Yellow Pine](https://issaquahlumber.com/cascade-collection/thermally-modified-vg-southern-yellow-pine/): With its straight, vertical grain pattern and reduced movement, Arbor Wood VG Southern Yellow Pine provides a crisp, architectural appearance. It’s an excellent solution for high-visibility siding, soffits, and projects requiring uniformity and precision.
- [Cascade Collection](https://issaquahlumber.com/cascade-collection/): Issaquah Lumber offers the Cascade Collection by Amble Wood Co., a made-to-order range of premium modified and legacy wood species milled to fit the GRAD System. Choose from standard or custom options, delivered to you ready for installation.
- [Flooring and Stairs](https://issaquahlumber.com/products/interior/flooring-and-stairs/): Bring warmth, durability, and character underfoot with premium wood flooring and stair components.
- [Trim and Molding](https://issaquahlumber.com/products/interior/trim-and-molding/): From baseboards to crown molding, our interior trim and molding options are milled for a precise fit and timeless finish.
- [Accent Walls and Paneling](https://issaquahlumber.com/products/interior/accent-walls-and-paneling/): Bring texture, warmth, and dimension to any space with custom wood paneling and wall systems.
- [Legacy Western Red Cedar – Tight Knot](https://issaquahlumber.com/cascade-collection/traditional-western-red-cedar-tight-knot/): Similar to clear grades, knotty western red cedar offers the same durability while showcasing natural knots and character. It is often selected for siding and architectural applications where a more rustic, natural look and texture is intended.
- [Legacy Wood Western Red Cedar Clear](https://issaquahlumber.com/cascade-collection/traditional-wood-western-red-cedar-clear/): A fine and uniform appearance with minimal knots and a smooth surface, clear western red cedar is naturally resistant to moisture and decay. Specified for exterior siding, soffits, and architectural applications where a refined, consistent aesthetic is desired.
- [THERMOWOOD® Tight Knot Nordic Spruce](https://issaquahlumber.com/cascade-collection/thermowood-tight-knot-nordic-spruce/): ThermoWood Tight Knot Nordic Spruce brings a bright, Scandinavian-inspired appearance accented by subtle, sound knots. Enhanced durability and moisture resistance make it a versatile option for siding, soffits, and exterior cladding systems.
- [ThermoWood  Ayous](https://issaquahlumber.com/olympic-collection/thermowood-ayous/): ThermoWood Ayous is a lightweight hardwood known for its smooth texture and exceptional stability. Its reduced weight and consistent profile make it well-suited for rainscreen systems, vertical cladding, and contemporary façade designs.
- [THERMOWOOD® Nordic Pine](https://issaquahlumber.com/cascade-collection/thermowood-nordic-pine/): Harvested from northern European forests, ThermoWood Nordic Pine features a defined grain pattern and dependable performance. It is ideal for use in exterior siding and decking applications where natural character and stability are priorities.
- [ThermoWood Poplar](https://issaquahlumber.com/cascade-collection/thermally-modified-poplar/): Clean, consistent, and easy to work with, ThermoWood Poplar offers a smooth surface and dependable stability. Ideal for modern siding and soffit applications, it delivers a refined look with reliable exterior performance.
- [Thermowood Southern Yellow Pine](https://issaquahlumber.com/cascade-collection/thermally-modified-southern-yellow-pine/): Dense and structurally sound, ThermoWood Southern Yellow Pine delivers proven strength with improved dimensional stability. It’s well-suited for decking, siding, and exterior applications where durability and long-term performance matter.
- [Thermowood Ash](https://issaquahlumber.com/cascade-collection/thermally-modified-ash/): ThermoWood Ash combines the durability of hardwood with a bold, expressive grain. Its enhanced stability and moisture resistance make it a strong choice for exterior cladding, decking, and other architectural applications that require resilience and visual impact.
- [Accoya Grey](https://issaquahlumber.com/cascade-collection/accoya-grey/): Accoya Grey Accoya Gray 1x6 Shiplap 1.25x6 S4S 1x6 Parallelogram PRODUCT SPECS Sizes: 1x4, 1x6, 5/4x6 Lengths: 8' to 16' Even only Thickness: .75" and 1" Texture: Architectural, Heritage, Artisan, Heirloom Application: Decking & Siding Grade: Clear Durability: Class 1 Warranty: 50 years above ground, 25 years below ground and freshwater Accoya Grey Warranty Accoya Siding Guidelines Accoya Siding WUI Compliance Standard to custom profiles are available and compatible with the GRAD System.
- [Accoya Natural](https://issaquahlumber.com/cascade-collection/accoya-natural/): Accoya Natural Accoya Natural 1x6 Parallelogram 1x4 Shiplap PRODUCT SPECS Sizes: 1x4, 1x6, 1x8, 5/4x6, 5/4x8 Lengths: 8' to 16' Even Only Thickness: .75" & 1" Texture: Architectural, Heritage, Artisan, Heirloom Application: Decking & Siding Grade: Clear Durability: Class 1 Warranty: 50 years above ground, 25 years below ground and freshwater Accoya Natural Warranty Accoya Siding Guidelines Standard to custom profiles are available and compatible with the GRAD System.
- [Legacy Wood Siding – Western Red Cedar](https://issaquahlumber.com/products/exterior/siding/traditional-wood-siding-western-red-cedar/): Western Red Cedar Siding PRODUCT SPECS Sizes: 1x6, 1x8, S4S, Shiplap, Tongue and Groove, Custom Lengths: Random Lengths 8’ to 20’ Thickness: 1" Texture: Smooth and Rough Sawn Finish: Natural or stained Standard to custom siding profiles are available and compatible with the GRAD System through our Cascade Collection.
- [Southern Yellow Pine Siding](https://issaquahlumber.com/products/exterior/siding/thermally-modified-wood-southern-yellow-pine/): Southern Yellow Pine Siding Natural Southern Yellow PineSYP Battleship Artisan Soft-Brushed FinishSYP Battleship Heirloom Wire-Brushed FinishSYP Black Artisan Soft-Brushed FinishSYP Black Heirloom Wire-Brushed FinishSYP Black Heritage Resawn FinishSYP Coastline Architectural Smooth FinishSYP Coastline Artisan Soft-Brushed FinishSYP Coastline Heirloom Wire-Brushed FinishSYP Coastline Heritage Resawn FinishSYP Morning Dew Architectural Smooth FinishSYP Morning Dew Artisan Soft-Brushed FinishSYP Morning Dew Heirloom Wire-Brushed FinishSYP Morning Dew Heritage Resawn FinishSYP Saddle Architectural Smooth FinishSYP Saddle Artisan Soft-Brushed FinishSYP Saddle Heirloom Wire-Brushed FinishSYP PRODUCT SPECS Sizes: T&G: 1x6-3/4" x 6-1/4" with 5" face coverage, Fluted T&G: 1x5-1/4" x 6-1/4" with 5" face coverage, Custom and Shiplap Lengths: 6’ to 16’ evens Texture: Smooth Grade: C or better, clear Warranty: 20-years TMW Warranty Installation Guide CSI Specs Mechanical Specs ANSI Slip Testing Standard to custom siding profiles are available and compatible with the GRAD System through our Cascade Collection.
- [Poplar Siding](https://issaquahlumber.com/products/exterior/siding/thermally-modified-wood-poplar/): Poplar Siding PRODUCT SPECS Sizes: T&G: 1x6-3/4" x 5-1/4" with 5" face coverage, Custom and Shiplap Lengths: 6’ to 16’ evens Texture: Smooth Grade: C or better, clear Warranty: 20-years TMW Warranty Installation Guide CSI Specs Mechanical Specs Standard to custom siding profiles are available and compatible with the GRAD System through our Cascade Collection.
- [Ash Siding](https://issaquahlumber.com/products/exterior/siding/thermally-modified-wood-ash/): Ash Siding   Natural Ash   Ash Battleship Architectural Smooth Finish   Ash Battleship Artisan Soft-Brush Finish   Ash Battleship Heirloom Wire-Brush Finish   Ash Battleship Heritage Resawn Finish   Ash Black Architectural Smooth Finish   Ash Black Artisan Soft-Brushed Finish   Ash Black Heirloom Wire-Brushed Finish   Ash Black Heritage Resawn Finish   Ash Coastline - Architectural Smooth Finish   Ash Coastline Artisan Soft-Brushed Finish   Ash Coastline Heirloom Wire-Brushed Finish   Ash Coastline Heritage Resawn Finish   Ash Morning Dew Architectural Smooth Finish   Ash Morning Dew Artisan Soft-Brushed Finish   Ash Morning Dew Heirloom Wire-Brushed Finish   Ash Morning Dew Heritage Resawn Finish   Ash Saddle Architectural Smooth Finish   Ash Saddle Artisan Soft-Brushed Finish   Ash Saddle Heirloom Wire-Brushed Finish   Ash Saddle Heritage Resawn Finish   PRODUCT SPECS Sizes: 5/4x6 - 1x6 - .75” x 5-5/16” with 5” face coverage, 1.4 – 75” x 3-5/16” with 3” face coverage, Custom and Shiplap Lengths: 6’ to 12’ odds and evens with available end match Texture: Smooth Grade: Premium clear Warranty: 20-years TMW Warranty Installation Guide WUI Approved Flame Spread CSI Specs Mechanical Specs ANSI Slip Testing Standard to custom siding profiles are available and compatible with the GRAD System through our Cascade Collection.
- [ThermoWood Red Oak](https://issaquahlumber.com/products/exterior/siding/thermowood-red-oak/): Red Oak Siding PRODUCT SPECS Sizes: 1x4, S4S, Shiplap, T&G, Custom Lengths: Random lengths Texture: Smooth Warranty: 20-years ThermoWood Warranty - Coming Soon ThermoWood Installation Guide- Coming Soon Standard to custom siding profiles are available and compatible with the GRAD System through our Cascade Collection.
- [Imbue Radiata Pine](https://issaquahlumber.com/products/exterior/siding/radiata-pine/): Radiata Pine Siding Natural Radiata PineRadiata Pine Battleship Architectural Smooth FinishRadiata Pine Battleship Artisan Soft-Brushed FinishRadiata Pine Battleship Heirloom Wire-Brushed FinishRadiata Pine Black Architectural Smooth FinishRadiata Pine Black Artisan Soft-Brushed FinishRadiata Pine Black Heirloom Wire-Brushed FinishRadiata Pine Coastline Architectural Smooth FinishRadiata Pine Coastline Artisan Soft-Brushed FinishRadiata Pine Coastline Heirloom Wire-Brushed FinishRadiata Pine Morning Dew Architectural Smooth FinishRadiata Pine Morning Dew Artisan Soft-Brushed FinishRadiata Pine Morning Dew Heirloom Wire-Brushed FinishRadiata Pine Saddle Architectural Smooth FinishRadiata Pine Saddle Artisan Soft-Brushed FinishRadiata Pine Saddle Heirloom Wire-Brushed Finsih PRODUCT SPECS Sizes: 1x6 Lengths: Random up to 20' Texture: Architectural, Heritage, Artisan, Heirloom Warranty: 15 years
- [Nordic Pine Siding](https://issaquahlumber.com/products/exterior/siding/thermowood-nordic-pine/): Nordic Pine Siding   Natural Nordic Pine   Nordic Pine Battleship Architectural Smooth Finish   Nordic Pine Battleship Artisan Soft-Brushed Finish   Nordic Pine Battleship Heirloom Wire-Brushed Finish   Nordic Pine Coastline Artisan Soft-Brushed Finish   Nordic Pine Morning Dew Architectural Smooth Finish   PRODUCT SPECS Sizes: 1x4, S4S, Shiplap, T&G,Custom Lengths: Random lengths Texture: Smooth Warranty: 20-years Installation Guide - Coming Soon ThermoWood Warranty - Coming Soon Standard to custom siding profiles are available and compatible with the GRAD System through our Cascade Collection.
- [Accoya Natural](https://issaquahlumber.com/products/exterior/siding/accoya-natural/): Accoya Natural Siding PRODUCT SPECS Sizes: 1x6, S4S, Shiplap, T&G, Custom Lengths: 8' to 16' random Thickness: .75" Texture: Sawn & Smooth Durability: Class 1 Flame Spread: Class C Accoya Natural Guidelines Accoya Natural Warranty Accoya Siding WUI Compliance Standard to custom siding profiles are available and compatible with the GRAD System through our Cascade Collection.
- [Accoya Color Grey](https://issaquahlumber.com/products/exterior/siding/accoya-color-grey/): Accoya Grey Siding PRODUCT SPECS Sizes: 1x6, S4S, Shiplap, T&G, Custom Lengths: 8' to 16' random Thickness: .75 inches Texture: Sawn & Smooth Durability: Class 1 Flame Spread: Class C Accoya Color Grey Guidelines Accoya Color Grey Warranty Standard to custom siding profiles are available and compatible with the GRAD System through our Cascade Collection.