Transparent primer for silicone sealants, based on siloxane resins hardened by solvent evaporation, for priming the sides of expansion joints subject to high stress or where adhesion may be difficult.

Supplied in a convenient metal can, Primer Silicone is ready to use and does not require further dilution. It is compatible with all silicone sealants regardless of the specific chemical nature of the product (neutral or acetic). Particularly suitable for application on absorbent substrate or surfaces of unknown composition, such as materials treated with Teflon-coated paints. Applied beforehand on the sides of the joint, it improves the adhesion of the sealant, making it more efficient against physical and mechanical stress, even when immersed.