How to Fix Wall & Concrete Roof Cracks | Sika® Cracksil Acrylic Paste

Prep your walls for paint and your roofs for waterproofing! Learn how to instantly seal internal plaster cracks and external concrete roof cracks with Sika® Cracksil ready-to-use acrylic paste. Welcome to the official Sika India masterclass. Whether you are prepping your interior walls for a fresh coat of paint or preparing your concrete terrace for heavy-duty monsoon waterproofing, sealing static cracks is your mandatory first step. Sika® Cracksil is your ultimate time-saving, two-in-one solution. Sika Cracksil is a single-component, ready-to-use acrylic paste designed to effortlessly seal static cracks (up to 5mm) in plastered walls, masonry, and concrete roofs. Unlike traditional putty, it is highly flexible, weather-resistant, and non-shrinking. Step 1: Surface Preparation (The V-Groove) - Watch how to gently widen the crack into a "V" shape using a scraper. Whether you are on a terrace or in a living room, removing all loose dust, debris, and flaking material is critical to ensure maximum adhesion. Step 2: Direct Application - No messy mixing required! See how easily Sika Cracksil applies straight from the tub. We show you the proper technique using a putty knife to press the paste firmly into the wall or roof crack, eliminating air pockets and leveling the surface flush. Step 3: Curing, Painting, or Waterproofing - After a 24-hour curing period, the dried acrylic paste can be lightly sanded. For walls, it is perfectly over-paintable for a seamless finish. For concrete roofs, your surface is now perfectly sealed and ready for the application of Sika’s liquid waterproofing membranes! Stop letting cracks compromise your home's aesthetics or waterproofing safety.