Passive timber frame roof system

25 04 144 Elements Encap Oakwrights Content Block

Natural, breathable roof system

Our Passive Roof System is designed for architects seeking uncompromising thermal performance within a refined, fabric-first design. Available in 3 depths, it achieves U-values as low as 0.10 W/m²K. The 300mm and 360mm panels meet passive design principles, while the 400mm system attains full Passive House certification. Offered in cut vaulted and flat roof configurations, it provides exceptional airtightness, design flexibility, and seamless integration with our Passive Wall and Foundation systems.

Our passive roof systems

U-value 0.13W/m²K

Thickness: 300mm

U-value 0.11W/m²K

Thickness: 360mm

U-value 0.10W/m²K

Thickness: 400mm

Features of our passive roof system

Manages moisture: Reduces condensation and improves air quality.
Natural performance materials: STEICOzell woodfibre insulation and responsibly sourced timber.
Prefabricated panels: Off-site fabrication ensures accuracy, speed, and minimal waste. Delivering quick, weather-tight assembly for follow on trades.
Sustainable and low carbon: ~81% woodfibre from regional, renewable forests.

Roof build up

Not supplied. Included for illustrative purposes.

Cavity batten creates the required air gap for ventilation.

Water resistant and vapor-permeable membrane protecting the panels during and after construction while allowing moisture to escape.

Structural panel adding rigidity and strength to wall and roof systems.

High strength engineered structural element offering versatility and superior load bearing for walls and roofs. Natural blown STEICOzell insulation with excellent thermal performance and moisture regulation.

Structural board with integrated vapour control; ideal for energy efficient and Passive House builds.

Provides space for internal services.