Features excellent fire performance, while providing high elasticity and moisture resistance. Reinforced with fiberglass mesh, it can be applied to fixed thermal insulation boards, serving as the ideal substrate for the subsequent organic render coat, e.g. MARMOCRYL FR. Suitable also for bonding thermal insulation boards. ISOMAT AK-THERMO ACRYL FR is a highly flexible, fiber-reinforced, ready-to-use organic coating based on synthetic resins. It provides high initial and final bond strength, high elasticity and resistance to moisture. ISOMAT AK-THERMO ACRYL FR features excellent performance to extreme temperatures and fire and has achieved a reaction to fire classification of A2-s1, d0. Certificate No.: 18/18310-2011, APPLUS Laboratories, Spain, January 2019. Certified according to EN 15824 and classified as a V2, W3 render. CE marked.

Substrate

The thermal insulation boards mst be applied in a staggered pattern (like brickwork), without continuous vertical joints. Any voids between the boards must be filled with polyurethane foam. The surface must be even.

Application 

Before application, ISOMAT AK-THERMO ACRYL FR must be stirred well a low-speed mixer. The material is applied with a notched trowel to a maximum thickness of 2-3 mm. Then, a reinforcing fiberglass mesh is placed and firmly embedded into the fresh base coat layer with a smooth trowel. Finally, the surface is smoothed out and the excess adhesive is removed. The fiberglass mesh strips should overlap each other by approx. 10 cm.