- 5728 East Lake Sammamish Parkway SE Issaquah, WA 98029
- 425.392.3631
- sales@issaquahlumber.com
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.
The Olympic Collection by Amble Wood Co. features the same trusted, modified, and legacy species as the Cascade Collection — including Western Red Cedar, CVG Hemlock, CVG Douglas Fir, and a range of thermally modified options — fire-rated options available.
Accoya is made from fast-growing, sustainably sourced radiata pine and is modified through a proprietary acetylation process. The result? A high-performance, sustainable lumber product with unmatched dimensional stability used for siding, decking, soffits, windows, and doors, and other exterior applications. Accoya withstands moisture, insects, rot, and harsh weather without cupping or warping.
Choose from Natural or Accoya Color Grey for a clean, modern aesthetic—both options offering a low-maintenance, sustainable solution.
Standard to custom profiles are available and compatible with the GRAD System and our Cascade Collection.
Arbor Wood is domestically sourced and produces a range of ThermoWood® products made from responsibly harvested wood species and enhanced through a specialized, three-phase thermal modification process using only heat and steam—no chemicals. By altering the wood’s cellular structure in a high-heat, oxygen-controlled environment, the process reduces moisture absorption, increases dimensional stability, and makes the material resistant to rot and fungal decay. The result is a lightweight, durable, and sustainably produced wood product with a rich, through-color tone, ideal for siding, decking, and architectural millwork applications.
We supply a selection of Arbor Wood Co. species for siding, decking, and other millwork applications, including:
LDCwood® is a leading European producer of ThermoWood®, manufactured in Belgium and distributed across North America by BPWood. Sourced from Scandinavian softwoods and responsibly harvested hardwoods—including Ayous, Nordic Pine, and Nordic Spruce—each species offers distinct aesthetics and performance characteristics. Using the 100% natural ThermoWood® process of heat and steam, LDCwood enhances durability, dimensional stability, and longevity, providing a sustainable solution for siding, decking, and architectural applications. LDCwood brings proven European thermal modification expertise to specialty lumber dealers across the U.S. and Canada.
The Cascade Collection features two thermally modified species, each with a distinct visual character. Both are enhanced through a heat and steam-based modification process that delivers superior resistance to moisture and movement — making them dependable choices for siding, soffits, and architectural detailing both inside and out.
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.
We will always offer legacy wood species — it’s what we built our company on and you can count on a carefully curated selection of legacy wood species known for their timeless aesthetics, ease of working with, and enduring warmth. Select from Western Red Cedar, CVG Hemlock, and CVG Douglas Fir, all offering consistent grain, outstanding performance, and versatility.
All of our legacy wood options were chosen to work seamlessly with the GRAD System. And they are easy to finish with stains, oils, or transparent coatings.
