Exterior timber cladding, such as Douglas fir sidings, can be effectively treated with a fire-retardant opaque paint system developed by Teknos. This waterborne exterior coating system enhances fire safety for weather-exposed wooden façades, while offering long-term durability and colour customisation. It is classified as B-s2, d0 in accordance with EN 13501-1.

System Overview
The TEKNOS Exterior Opaque Paint System is specifically developed to protect timber façades against fire in outdoor conditions. It consists of the following components:

• Primer: TEKNOSAFE FLAME GUARD 2407-00 WHITE
  A waterborne intumescent primer designed for use on weathered timber cladding. Suitable substrates include solid Scandinavian spruce planks with a thickness between 19 and 57 mm and an average density of 500 ±100 kg/m³. The primer can be tinted in a range of opaque colours and is used as part of the Teknos FR Façade system.

• Finish: TEKNOSAFE FLAME PROTECT 2408-00 TINTED (RAL 7015)
  A waterborne intumescent topcoat suitable for both solid timber and finger-jointed laminated constructions made from spruce. Applied in combination with the above primer, this finish delivers fire protection for exterior timber cladding. It is available in a wide variety of opaque colours.

Fire Performance
When applied as a complete system, the products achieve fire classifications of B-s1, d0 or B-s2, d0 in accordance with EN 13501-1 (SBI test), depending on the configuration and project-specific fire report. The system’s durability in exterior applications is rated as DRF class EXT under EN 16755, signifying its long-term fire performance under outdoor exposure.

Furthermore, Teknos FR Façade Opaque is classified under SP Fire 105 and provides fire resistance ratings of K₁10 and K₂10, adding an extra layer of verified protection in façade design.