A moisture hardened sealant. A sealer with strong adhesion but always remaining flexible under all conditions. Capable of sealing seams and joints and bonding to wood, brick, cement rendering and rigid plastics. Polyflex will also seal around pipe work and bottom drains. When liners are tucked into brickwork it forms an excellent sealant since it allows for movement. Polyflex is supplied in a cartridge and is easily applied with a mastic gun or similar application tool.