- 5728 East Lake Sammamish Parkway SE Issaquah, WA 98029
- 425.392.3631
- sales@issaquahlumber.com
From classic to contemporary, our wood siding options, including lap, tongue-and-groove, vertical, shakes, and shingles, deliver natural beauty and long-term performance.
At Issaquah Lumber, our siding materials are chosen for their long-term stability, weather performance, and elevated architectural appeal they bring to any project.
We specialize in custom-milled siding profiles, from modern cladding styles to timeless bevel, shiplap, and standard profiles. All offered in random lengths and consistent widths and thicknesses. For ease of installation, our products work seamlessly with the GRAD System.
Finish your siding the way you want it—select from factory-prefinished options, or choose stain, paint, oiled, brushed, or charred treatments to achieve the look and protection your project calls for.
Accoya is a premium modified-wood siding crafted from FSC®-certified, fast-growing radiata pine, transformed through a proprietary acetylation process that alters the wood at the cellular level. The result is a dimensionally stable, high-performance cladding material that resists moisture absorption, rot, insects, and the kind of seasonal movement that causes conventional siding to cup, crack, and fail over time.
For architects and builders, Accoya siding offers design versatility alongside long-term confidence. Natural Accoya weathers gracefully to a soft silver patina, bringing an organic, evolving aesthetic to contemporary and traditional facades alike. Accoya Color Grey delivers deep, consistent color throughout the board — the same tone on the surface as within — eliminating the visible weathering lines that can develop with surface-applied finishes.
Arbor Wood is a domestic producer of ThermoWood® products, using responsibly harvested North American species and a three-phase thermal modification process that relies solely on heat and steam — no chemicals, no additives. The process fundamentally alters the wood’s cellular structure, reducing moisture absorption, improving dimensional stability, and delivering lasting resistance to rot and fungal decay.
For siding applications, Arbor Wood offers a distinctive, through-color tone and a refined surface character well-suited to contemporary and transitional architectural styles. Available species include Ash, Poplar, Southern Yellow Pine, and VG Southern Yellow Pine — each offering its own visual character and grain profile, all with increased durability.
LDCwood is a leading European producer of thermally modified wood, manufactured in Belgium and distributed across North America. Sourced from Scandinavian softwoods, LDCwood’s siding products are modified using a 100% natural, chemical-free heat-and-steam process.
What sets LDCwood apart is the precision and consistency of European manufacturing, delivering siding materials with exceptional dimensional stability, improved weather resistance, and a beautifully uniform tone. For architects and builders specifying premium modified wood cladding, LDCwood offers the depth of European thermal modification expertise in a product built for North American conditions. Available species include Ayous, Nordic Pine, and Tight Knot Nordic Spruce.
The Cascade Collection features a thermally modified species with a distinct visual character. It is enhanced through a heat and steam-based modification process that delivers superior resistance to moisture and movement — making it a dependable choice for siding, soffits, and architectural detailing both inside and out.
Abodo Imbue is a flatsawn thermally modified Radiata Pine sourced from FSC®-certified plantation forests in New Zealand — grown, harvested responsibly, and modified without chemical preservatives or Red List substances. The thermal modification process reduces resin content, improves dimensional stability, and creates a wood that accepts coatings beautifully and holds them well over time.
Imbue is engineered as a premium substrate for factory finishing for a refined, weathered aesthetic right out of the gate. The result is a cladding option that offers design flexibility and long-term performance for any exterior application — whether the goal is a clean, modern facade, a naturally weathered look, or a custom finish specified for a particular project.
Issaquah Lumber offers a curated selection of natural wood siding species known for their warmth, workability, and timeless architectural appeal. Our options include Western Red Cedar, CVG Hemlock, and CVG Douglas Fir—all Pacific Northwest softwoods valued for their consistent grain and enduring performance.
Versatile and easy to finish, these natural species accept stain, oil, or transparent coatings beautifully and age gracefully over time. For projects that prioritize authentic beauty and proven performance, our natural wood siding provides a sustainable choice that stands the test of time.
