Grip Primer has a high vapour permeability so maintains the breathability of the wall and all other breathable product systems being used. It can be used on smooth concrete, glazed/unglazed ceramic tiles, concrete tiles, metal, glass or plastic surfaces. It is also suitable for priming any stable material that has been painted with non-absorbent paint, glossy paint or varnish.

Where to use it (types of surface)

• Over concrete: the surface should be free from dust and debris and not in a crumbling state. Any damaged or crumbly surface should be made good prior to application. The concrete must be dry and fully cured prior to application with Grip Primer.
• On screeds (or retaining walls that are in contact with the ground or subjected to rising damp): Watstop waterproof plaster should be used prior to application of Grip Primer. The Grip Primer should be fully dry and cured before applying Watstop.
• When applied over a tiled surface: make sure that tiles are well bonded to the substrate, otherwise these should be removed and the gaps filled with lime or cement mortar (depending on the wall type). The surface should be stable and clean of debris, greases, waxes, oils, or water-repellent chemical products like silicone. It is recommended to sand the surface of the tiles with a suitable abrasive and clean the surface thoroughly prior to Grip Primer application. The joints between the tiles can be filled with Watstop waterproof plaster to reduce unevenness and even out the absorption between the tiles and the grout.
• For application on metallic surfaces: any rust or oxidisation should be treated with a suitable remedy or treatment prior to Grip Primer being used. On surfaces that have been painted with metallic paint, it is recommended to perform an adhesion test.

Aspect: Liquid
Components: One-component
Adhesion on concrete: 1.66 N / mm².
Adhesion on tiles: 4.17 N / mm².
Adhesion to metal: 1.50 N / mm².
Adhesion on polyurethane foam panel: 1.33 N / mm².