Cross-laminated timber (CLT) used in interior applications can be effectively protected with a waterborne fire-retardant coating system developed by Teknos. This system enhances fire safety while preserving the natural appearance of wood, and meets the European fire classification B-s1, d0 in accordance with EN 13501-1.

System Overview
The TEKNOS Interior Translucent Paint System is designed to improve the reaction to fire of interior timber surfaces and consists of the following components:

• Primer: TEKNOSAFE FLAME GUARD 2467-10 BASE T
  A waterborne intumescent primer suitable for solid wood and wood-based panels with a thickness greater than 8 mm and a minimum density of 338 kg/m³. The product can be used clear or tinted and is applied as part of the Teknos FR Panel system.

• Finish: TEKNOSAFE FLAME PROTECT 2468-00
  A waterborne fire-retardant topcoat for use on solid wood and wood-based interior panels and cladding. The finish is intended for industrial application and is used in combination with the above primer as part of the Teknos FR Panel system. Suitable substrates include solid wood or wood-based panels (thickness > 8 mm; density ≥ 338 kg/m³), provided they are covered by the relevant fire classification report.

Fire Performance
The complete system has been tested and classified as B-s1, d0 under the EN 13501-1 (SBI test), indicating limited smoke production and no flaming droplets. It meets the fire performance durability classifications DRF class INT1 and INT2 under EN 16755, making it suitable for a variety of interior environments.

The system also fulfils strict emissions requirements, with an M1 indoor air classification and an A+ rating for low emissions into indoor air when used in industrial settings.