TPA 401M is an off-white, flexible, powdered adhesive for wall and floor applications. It has superior anti-slip properties, easily holding 600mm x 600mm wall tiles on vertical surfaces. Suitable to use over concrete, cement render, screeds, fibrous cement sheeting, plasterboard and suitable WPA waterproofing membranes. It is suitable for internal and external applications TPA 401M is suitable for most types of moisture stable tiles in domestic and general tiling applications. TPA 401M is classified as a C2S1ET adhesive.