decking
$4.00 - $7.00 per linear foot
Thermo Ash Decking: Thermally Modified for Performance
Thermally modified Ash decking undergoes a chemical-free heat treatment process that dramatically improves rot resistance, dimensional stability, and color. The result is a beautiful, dark brown decking material with enhanced performance.
Why Choose This Species
Chemical-free modification process. Enhanced rot resistance and stability. Rich dark brown color throughout the board. Reduced moisture absorption. Eco-friendly treatment.
Available Sizes
1x6, 5/4x6 in lengths 6'-12'
Available Grades
Select, Standard
Installation Tips
Pre-drill all fastener holes as thermally modified wood can be brittle. Use hidden clip systems for best appearance. Handle carefully to avoid breakage.
Care & Maintenance
Apply UV-protective oil to maintain dark color. Thermo Ash has excellent rot resistance but benefits from UV protection to prevent graying.
Frequently Asked Questions
Thermally modified ash is heated to over 400°F in a controlled, oxygen-free environment, permanently changing its cell structure to improve rot resistance and stability.
Yes, thermal modification is a completely chemical-free process using only heat and steam, making Thermo Ash one of the most eco-friendly durable decking options.
Thermo Ash decking lasts 20-30 years in outdoor applications, with significantly better performance than untreated ash.