Tiling contractors can prevent the lifting of tiles linked to surfaces that are dense, impervious or smooth, by using the new TAL Keymix powder primer.
TAL’s newly launched Keymix powder primer creates better adhesion and helps to prevent tiles from lifting off surfaces that are dense, impervious or smooth with low porosity and little suction.
TAL Keymix is a cementitious powder primer used in a 2:1 volume mix with TAL Keycoat latex-based liquid. Once mixed, the primer slurry is brushed onto the surface to enhance the bond of the adhesive onto the substrate.
“It offers phenomenal adhesion to surfaces such as power-floated or steel-floated concrete and screeds, existing tiles and glass, to name a few. Due to the innovative formulation, the TAL Keymix primer system also has excellent workability and drying time. Tiling can commence after four to six hours once the TAL Keymix primer slurry is touch-dry,” says Sharon Margon, technical advice supervisor at TAL.
When tiling onto conventional reinforced suspended concrete slabs, the TAL Keymix primer slurry coat, applied to a minimum 2mm thickness, improves the flexibility of the tiling installation. This, together with correctly placed tile panel movement joints, will help to prevent the tiles from cracking and lifting.
Priming the surface with the TAL Keymix primer system will also enhance the water resistance of the tiling installation, particularly when used in conjunction with adhesive and grout that contains TAL Bond Powder.
Margon further cautions that incorrect surface preparation can lead to installation failure. “Substrates must be allowed the minimum curing or drying times, be integrally sound and of a quality and consistency suitable for tiling. All damaged, defective, deteriorated or hollow sounding areas must be removed and made good, and all surface contamination should be removed,” she says.
TAL is ISO 9001:2008 quality management system certified.
Tel: 0860 000 TAL (825)