COMING SOON
TimberBoard
Rigid Exterior Continuous Insulation and Interior Insulation for Walls, Floors, and Ceilings.
TimberBoard wood fiber insulation is a rigid, sustainable wall, floor, roofing, and continuous exterior insulation solution that stands strong against the harshest elements.
| PROPERTY | VALUE |
|---|---|
| R-Value | R-3.4 — R-3.7 / inch |
| Thickness Available | Single ply 1”— 9.25” |
| Length | 4’ and 8’ |
| Density | ~4.5 lb/ft³ |
| Vapor Permeability | 40 perm @ 1 inch |
| Compressive Strength | 10-20 psi |
| Fire Resistance | Meets ASTM E84 Class B Flame / Smoke |
Fire-Resistant
Meets ASTM E84 Class B ratings for flame and smoke spread performance even without the use of borate, with a Class A rated board coming soon.
High Thermal Performance
All-season thermal storage and draft reduction meets Passive House, LEED, and energy stretch code targets.
Acoustic Comfort
Excellent sound absorption supports privacy and comfort in multifamily and commercial interiors.
Carbon-Storing
Sequesters atmospheric carbon and is manufactured using environmentally-friendly practices.
Vapor-Open
Allows assemblies to dry out naturally, reducing risk of mold and other moisture-related issues.
Improved Air Quality
Itch-free, no added formaldehyde, VOCs, or harmful additives—Red List Free.
Applications
TimberBoard is suitable for a range of assemblies, whether you’re looking for heat resistance to improve the performance of an older home or want to ensure the resilience and long-term energy efficiency of new construction.
Roofs and Above-Grade Walls
TimberBoard adds robust thermal performance and moisture-resistant durability to roof and wall assemblies—enhancing building envelope strength in both residential and commercial construction.
Flooring
Used beneath flooring systems, TimberBoard helps buffer temperature swings and dampen sound, while providing added structural resilience and a smoother surface for finished floors.
Ceilings
Installed over ceiling framing, TimberBoard contributes to thermal control and acoustic comfort while supporting a continuous, breathable barrier across building levels.
Continuous Exterior Insulation
As a continuous insulation layer, TimberBoard reduces thermal bridging, boosts energy efficiency, and offers exceptional weather resistance—ideal for high-performance building envelopes.
Downloads
Tools & Accessories
With a single-ply square edge construction, TimberBoard can be cut and detailed using the same tools and techniques as wood to create wind-tight and water-resistant continuous insulation assemblies. Traditional wood cutting tools work well.
Bahco Insulation Saw
Durable and ergonomic with a stainless steel blade—great for straight and detail cuts.
Available Here
Custom TimberBatt Knife
Excellent for thicker batts or fast repetitive cuts. Serrated edge grips and slices easily through dense fiber.
Available Here
Linzen TimberBatt Knife
For volume cuts or production-speed installs, especially on larger jobs.
Available HereUse a timber offcut or cutting table underneath for safer, cleaner cuts and less mess on site.
TimberBoard FAQs
Can I use TimberBoard in commercial construction?
Absolutely. TimberBoard is well suited for commercial interiors, multifamily housing, schools, and offices. Reach out to our team for assemblies and detailing support.
Is TimberBoard fire-resistant?
Yes, TimberBoard and all TimberHP wood fiber insulation products are fire resistant. TimberBoard meets the ASTM E84 Class B rating for flame / smoke, even without the use of borate. A Class A rated board will be coming soon.
When will TimberBoard be available?
TimberBoard is on track to be released commercially in November 2025.
We recently completed our first home, insulated with TimberHP. We have been following the development of the company for those last couple years and eagerly awaited the launch of the product. We were excited about TimberHP because it gives us a high-performance insulating package that will allow water to escape and not grow mold or rot the sheathing. An added benefit was the local aspect of the product using a lot of waste material.
Kurt Clason
Clason Remodeling Company – 2022 National Remodeler of the Year
How Can We Help?
Contact Support
Our support team is ready to provide answers to your questions or concerns.
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