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Siding
Thermally Modified Wood Siding - VG Hemlock
For projects that demand an elevated touch, Vertical Grain (VG) Hemlock is the jewel in the crown of our thermally modified wood siding. Carefully selected boards with clean, straight graining go through an all-natural preservation process that alters each fiber. The end result is a more stable and long-lasting board that resists rot and minimizes expansion and contraction. Our thermally modified hemlock receives top marks for its longevity and meets Wildland-Urban Interface (WUI) standards for fire resistance.
That’s not all that sets this stunning siding apart. We sell our VG Hemlock wood siding natural and unfinished because of its inherent tone variation and modern look that silvers gracefully with age. Perfect for interior and exterior accent walls, soffits, ceilings, and more, VG Hemlock is a standout feature wherever it’s installed. Available in end matched nickel gap tongue-and-groove, v-groove (WP4), and bevel profiles.
Colors & Finishes:
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Select a finish above to view sample ordering options.
Documents
Specifications
Species: Hemlock
Profiles: Tongue & Groove Nickel Gap, Tongue & Groove V-Groove (WP4), Bevel
|
Nominal Dimensions |
Actual Dimensions |
Exposed Face |
|
1 in. x 6 in. |
0.68 in. x 5.31 in. |
5 in. |
Dimensions listed for T&G profiles
Lengths: 6-20 ft. random lengths (odd/even)
Features: End-matched T&G profiles, 20-year limited warranty (rot & fungal decay)
Certifications: WUI Compliant (Building Materials listing 8140-2393:0001)
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Resists Rot and Decay
Thermal modification for enhanced durability, backed by a 20-year limited warranty.
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A Natural and Varied Look
Available in random tallies that reflect natural variability. Every board tells a story.
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End-Matched Boards
No need to break on a stud with VG Hemlock boards that lock together seamlessly.
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Made for Your Design
Choose between smooth nickel gap and v-groove or resawn bevel profiles.
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Beautiful, Inside and Out
Withstands the elements on exteriors and elevates interior accents.
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Genuine and Organic
Natural, unpainted wood that silvers gracefully with age, offering added character.
Unmatched Performance and Aesthetics
When you’re looking for head-turning or jaw-dropping wood siding, there’s no competition with VG Hemlock. This WUI certified and rot-resistant thermally modified wood cladding is ready to take your design to the next level.
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Quality and Curb Appeal
The Austin Flipsters made their name with flips that defy the stigma of cutting corners by prioritizing high-quality, long-lasting materials. Watch how they used VG Hemlock to add warmth to this modern home.
The Darling of Designers and Builders
Everyone who sees VG Hemlock falls in love. From its natural color variation with straight grain and pin knots to its thoughtful profiles and durability, every detail is premium. See for yourself when you find a local dealer or order a sample.
I called Luke immediately and I was like, scrap the coffered ceiling, [the VG Hemlock] is so beautiful. I can’t cover any of it up.
Lea Brown, Designer of Knoxville Dream House
Order a Siding Sample:
Order a 12” cut sample of Siding Shiplap
Frequently Asked Questions
What is thermally modified wood?
Thermally modified wood is natural wood that has been heated to high temperatures in a controlled, oxygen-free environment to enhance its durability, stability, and resistance to moisture, insects, and decay. This process changes the wood’s cellular structure, reducing its moisture content while also deepening its color for a rich, natural aesthetic. Thermally modified wood siding offers long-lasting performance with minimal maintenance. If you want to learn more, read this blog by our experts.
Are there any harmful chemicals used in the thermal modification process?
No. Thermal modification is done in a controlled environment and any chemicals are cured out by the time products are handled for installation.
Is thermally modified hemlock siding resistant to rot, termites, and other insects?
Yes. Compared to untreated wood, thermally modified hemlock siding offers superior resistance to rot, termites, and other insects. The high-heat process eliminates moisture and organic compounds like hemicellulose, which are key food sources for fungi. It also breaks down sugars and starches that attract wood-boring insects such as termites, making the material far less inviting to pests.
Does thermally modified wood expand and contract?
Slight movement can still occur, but the thermal modification process significantly minimizes expansion and contraction when compared to untreated wood.
Is VG Hemlock fire resistant?
The VG Hemlock 1x6 and 1x8 T&G nickel gap profiles meet Wildland-Urban Interface (WUI) compliance standards and are tested and approved for fire-sensitive regions. See Building Materials listing 8140-2393:0001 for more information.
What type of fasteners are required for exterior application?
Stainless steel screw fasteners are required for exterior installation of thermally modified wood siding.
What type of fasteners are required for interior application?
Fifteen or 16-gauge trim nails are recommended for interior installation of thermally modified wood siding.
Should I pre-drill holes for fasteners?
Yes. Predrilling holes for fasteners is recommended. Areas especially prone to cracking, such as the ends of the boards, should always be predrilled. The thermal modification process makes the wood slightly more brittle, and therefore, it can be more prone to splitting.