Under Tile Waterproofing - Damp Room Coating - Sikalastic 850W - Straw Yellow - 25kg, is an under tile waterproofing coating for intermediate floors, walls and indoor swimming pool decks that forms an adherent, watertight and crack resistant membrane. The product is applied in 2 coats and can be quickly covered with tile or coated screed. Advantages : Ready-to-use product in aqueous phase High elasticity to bridge cracks Waterproof Can be quickly covered with hard protection: glued or sealed tiles, screed with coating (plastic floor, resin coating, etc.). Good adhesion on concrete, mortar, plaster, waterproof or not waterproof plaster tiles, waterproof plasterboard, terracotta tiles, aerated concrete, wood and wood-based panels (CTBH, CTBX) Read the instructions carefully before using the product. Features : Density: Approximately 1.2 pH value: approx. 9 Skin formation time: 5C = 7h / 20C = 4h / 35C = 2h Consumption: 2.2 kg/m to be applied in two coats in all areas (floor and wall) to be sealed. Application Temperature: + 5C and + 35C Packaging : 25kg Colour : Straw yellow Reference : 16362 Packaging : Delivered in its original packaging Tips : SUPPORT After suitable surface preparation, the substrate must be clean, sound, free of loose or poorly adherent parts and free of materials that may interfere with the adhesion of SikaLastic-850 W APPLICATION SikaLastic 850 W should be applied in 2 coats, using a medium nap roller or a rectangular or Flemish smoothing machine. Apply the first coat and, at the singular points, roll the Sikarmature weave into the first fresh coat. The second coat must be applied over the first hardened coat (12 to 48 hours waiting time depending on temperature and humidity). Carefully close the bucket after use. SikaLastic 850 W must be covered with a hard coating. Use Sika products with care. Before use, please refer to the manufacturer's product manual available on the sika.co.uk website.