What is Thermally Modified Wood?
Our thermally modified cladding and decking starts with solid clear-grade American hard woods grown and milled in the US, and is enhanced through a chemical-free process using only heat and steam. Protected with a Class B fire-rated seal, it carries the natural beauty of real wood with the stability, strength, and assurance of a 25-year warranty.
Real American Wood
Crafted from 100% American-grown hardwoods for the true beauty of real wood.
Made from 100% American hardwoods for authentic beauty.
Rot & Pest Resistant
With lower moisture content, the boards are naturally resistant to termites, mold, anddecay.
Low moisture means protection from termites, mold, and decay.
Water & Weather Proof
Thermal modification lowers moisture content for dependable performance in everyclimate.
Performs in any climate, from heavy rain to extreme heat.
Stable & Durable
Thermal modification strengthens the cell structure, minimizing warping, shrinking,and splitting.
Minimized warping, shrinking, and splitting for lasting strength.
Shop All Thermally Modified Wood Products
Get Inspired
From lakeside cabins to commercial buildings, see how designers, architects, and homeowners use thermally modified wood to bring warmth, contrast, and natural texture to modern exteriors.
Rapid City, SD | Modern Exterior Cladding in Light Ash
What Clients Are Saying
Our thermally modified wood has become a go-to for clients looking for high performance and beauty. Here’s what they’re saying about working with us:
Frequently Asked Questions
All of our thermo products are made from 100% authentic, thermally treated wood, clear grade hardwoods that are sourced, milled and sealed in our North American production facility.
This is dependent on your vision and preferences for design. The siding or decking can be installed with no regular maintenance required, which will allow the wood to develop into a beautiful silver color over time. If you wish to maintain or restore the original color, you can apply a fresh coat of oil based sealant (Thompson’s WaterSeal Clear or ReadySeal Walnut) at any time.
All of our thermo products are treated to withstand weather of all types - hot sun, dry climates, humidity, snow and rainy seasons. Our thermo products are naturally water repellent due to the thermal treatment process, and then we take the added step of applying a UV-resistant treatment and oil based sealant on all 4 sides.
We ship anywhere in the US in 2-3 weeks via UPS or an LTL carrier, and send tracking information once it ships. Please note that lead times may vary depending on the season.
We accept returns or exchanges within 30 days from your delivery date. Please refer
to our Refund Policy here.
Installation is super simple! We recommend using stainless steel exterior grade nails
directly through the tongue of the boards into the existing substrate or furring strips.
Full install instructions can be found here.
Installation is super simple! We recommend using a hidden fastener system for the
best result and appearance. Full instructions can be found here.
When it comes to cladding and decking, each box contains 15 square feet of
coverage. You can use the square footage calculator, found here below the ‘Add to
Cart’ button. Or you can contact our team for assistance through live chat, email us
at send@woodplank.com or call us at (844) 755-9663.
Yes certainly, you will first need to fasten furring strips to the substrate then install the cladding directly into the furring strips using exterior grade stainless steel nails.
Yes, we are able to customize for specific lengths, mill profiles and color tones upon
request with one of our sales reps in order to bring your design vision to life! Please
give us a call at (844) 755-9663 to discuss next steps.
Yes, we manufacture a matching trim product in the same species as your cladding.
Just let us know how many linear feet you'll need and we can add it to your order.
You can find our trim here.
Not at all. While Poplar and Ash are the most common in our Modern Exterior Wood Cladding line, we also offer Pine, Hemlock, and Ash Slat. Outside of the thermally modified category, we also carry Oak Slat Panels, Reclaimed Wood Siding and Western Red Cedar options for a different look and application.
Order Free Samples
Feel the texture, see the color, and choose with confidence. All samples ship fast and include a $25 credit toward your next order.
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Installation Guides
Clear, step-by-step instructions to help you install with confidence, whether you’re working on a full facade or small accent wall.
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