Thermal Modification


Thermally Modified Poplar Siding with UV protectant

No chemicals. No plastics. No threat to rainforest ecosystems.

Enhancing the versatility of our native Pennsylvania hardwoods, high-temperature Thermal Modification transforms the wood to a striking, exotic brown, adding high weather resistance and stability for outdoor applications.

Apply a UV protectant to maintain the color, or do nothing and let it naturalize to a silver patina.

Thermal Modification ushers in the next generation of responsibly manufactured, high performance outdoor wood products, all from our locally-grown and well-managed Pennsylvania forests.

  • Siding
  • Decking
  • Porch Flooring
  • Decorative trim and mouldings



Natural silvering without UV protectant

  • Lasts 25 years in outdoor use
  • Dimensionally stable
  • Chemical-free production process
  • Substitutes for tropical rainforest species
  • Pure, natural oil, plastic, resin, wax or other additives

Thermal Modification is available in the following Species:

  • Poplar
  • Soft Maple
  • Red Oak
  • White Ash
  • White Oak

Thermally Modified Ash Decking in action


Our Thermally Modified Ash Decking is featured on the rooftop of the Musée des civilisations de l'Europe et de la Méditerranée (MuCEM) in Marseille France.

Click on the image to the left to download the article, and learn how our Thermally Modified Ash has been utilized to its full potential in this prestigious project.