SIKA level-31 W Adhesion Primer - 4L - Yellow, single-component primer in aqueous phase, improving adhesion on very porous, porous and closed substrates (e.g. tiles, mortar and concrete with low porosity). Advantages : Ready to use Aqueous phase product Ease of implementation Quick drying Features : Packaging : 4L pail Aspect/Colour: Yellow milky liquid Shelf life: 9 months in original undamaged packaging Storage conditions: Dry, frost-free and protected from high temperatures. Density: approx. 1.4 kg Packaging : x1 Adhesion Primer Delivered in its original packaging Tips : QUALITY OF THE SUPPORT / PRE-TREATMENT The substrate must be clean, sound, cohesive, dust-free, dry, free of any loose or poorly adherent parts, and free of products that may impair adhesion (laitance, grease, release oil, curing agent, etc.).