Flexibond

Bostik AP 250 Flexibond is an acrylic dispersion polymer for use as a flexible admixture with cement based tile adhesives and/or grouts. It can further be used as a primer/sealer for ready mixed tile adhesives and floor underlayment screeds.

Bostik AP 250 improves flexibility, shear modulus and tensile strength giving greater resistance to minor movements and vibration. Cement pores are part filled with the polymer, reducing the permeability and therefore reducing any damage by liquid transfer. Adhesion is enhanced when fixing to non-porous substrates and tiles. Improves the deformability of C2 adhesives to meet the requirements of class S1 according to EN12022.

The addition of Bostik AP 250 Flexibond to a non-polymer modified adhesive or grout is required where surfaces are prone to very minor movement and vibration, or where direct fixing to glazed tiles or other impervious surfaces is required.