ThermoWood TIGA Rainscreen 26x68mm

The ThermoWood TIGA Rainscreen 26x68mm is a thermally modified timber board engineered for use within concealed-fixing rainscreen façade systems. Designed specifically for the TIGA system, this profile delivers enhanced dimensional stability, reduced moisture uptake, and consistent long-term performance in exposed external wall applications.

Rainscreen cladding systems rely on a drained and ventilated cavity behind the cladding layer to manage rainwater and support controlled drying of the wall build-up. ThermoWood is produced using a chemical-free thermal modification process that improves durability and limits movement, making it particularly suitable for precision-installed, secret-fixed façade systems.

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

The 26x68mm section provides a slim, consistent profile that integrates well into contemporary timber façades. ThermoWood boards are supplied with a rich brown tone that will weather naturally to a silver-grey over time 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.