ThermoWood TIGA Rainscreen 26x92mm

The ThermoWood TIGA Rainscreen 26x92mm is a thermally modified timber board developed for use within concealed-fixing rainscreen façade systems. Designed specifically for the TIGA system, this profile combines enhanced dimensional stability with a wider face to create a clean, contemporary external finish suitable for exposed UK environments.

Rainscreen cladding systems function by incorporating a drained and ventilated cavity behind the cladding layer, allowing moisture to escape and supporting controlled drying of the wall build-up. ThermoWood is produced through a chemical-free thermal modification process that reduces moisture uptake and movement, making it particularly well suited to precision-installed, secret-fixed façade applications.

This board is intended for installation using the TIGA hidden cladding fixing system, which allows the boards to be fixed without visible face fixings. The concealed fixing method delivers a uniform façade appearance while maintaining correct ventilation and fixing accuracy across the rainscreen.

The 26x92mm section provides increased face coverage while retaining a slim, consistent profile within the façade. Supplied with a warm brown tone, ThermoWood will weather naturally to a silver-grey if left untreated. Where colour retention is required, suitable external coating systems may be applied. Correct cavity depth, ventilation paths, and installation detailing are essential to ensure reliable long-term performance.