Thermory Decking

Thermory decking is a premium, 100% natural wood decking product that has been enhanced using an advanced thermal modification process. Using only heat and steam and absolutely zero chemicals, Thermory changes the wood at a cellular level. This process alters the wood’s structure to remove sugars and moisture, giving it the exceptional stability, rot resistance, and longevity of exotic tropical hardwoods but in a highly sustainable form.

Thermory Benchmark Ash decking carries a 25+ year rot-resistance rating (Class 1 Durability). Because the thermal modification process removes the natural sugars that insects and fungi feed on, the wood achieves maximum defense against decay and environmental breakdown without requiring chemical treatments or sealants to maintain its lifespan.

No, Thermory decking does not get hot underfoot like composite decking or dark tropical hardwoods. Because it is made of real wood modified strictly with organic heat and steam, it retains natural thermal insulation properties. Thermory has a high solar reflectivity rating, meaning it stays comfortable for bare feet and pets even on peak summer days.

Thermory is an exceptionally low-maintenance decking option. It does not require annual sanding, stripping, or sealing to maintain its structural integrity.

• To let it age naturally: If left untreated, exposure to UV rays will cause Thermory to transition from its rich, exotic brown tone into a stunning, weathered silver-gray over 6 to 12 months.

• To preserve the color: If you prefer the original deep brown color, periodically apply a high-quality UV-inhibiting penetration oil designed for hardwoods.

The Decking Superstore offers Thermory in multiple premium wood species to match your design and budget needs:

• Benchmark Ash: A premier hardwood option featuring a deep, rich brown color, smooth finish, and Class 1 durability (25+ years).

• Benchmark Pine / Spruce: A rugged, golden-brown softwood option featuring distinct, rustic knots, exceptional dimensional stability, and Class 2 durability (15+ years).

To prevent corrosion and staining, you must always use high-quality stainless steel fasteners with Thermory decking. Thermory is precision milled to support hidden clip systems (like the PaCS or strip clip systems) for a clean, screw-free surface. If you choose to face screw Benchmark Ash boards, pre drilling and countersinking the holes is highly recommended to avoid surface splitting.