ISOMAT AK-20 is a high-performance, flexible, polymer-modified, cement-based tile adhesive with extended open time and no vertical slip. Provides  high initial and final adhesion strength, moisture resistance and flexibility. Certified according to EN 12004 and classified as  type C2 TE S1 adhesive. CE marked. ISOMAT AK-20 has received an Environmental Product Declaration (EPD) following an assessment of its life-cycle environmental impacts. Registration No: S-P-06170, The International EPD System.
ISOMAT AK-20 is suitable for fixing absorbent or non-absorbent wall and floor tiles, natural stone, decorative bricks, large-format tiles, etc. to a variety of substrates, especially where high adhesion, flexibility and moisture resistance are required (e.g. old tile layers, heated floors, gypsum boards, etc.). Suitable for indoor and outdoor use.

Substrate
The surface to be oberlaid must be clean, free of dust, grease, paint, loose material, etc. Dampening of the substrate before application is recommended.

Application
ISOMAT AK-20 is gradually added to water under continuous stirring until a uniform paste is formed. A low-speed mixer is recommended for mixing. The mixture should be left to stand for approx. 5 minutes and then stirred again. The tile adhesive should be uniformly spread over the entire surface using a notched trowel. The tiles should be firmly fixed to the desired position. The applied mixture must be covered with tiles within 30 minutes to avoid “skin” formation, i.e. before the adhesive film starts setting,