Watertite Crack Filler is a ready‑to‑use, fibre‑reinforced crack‑filling compound for interior and exterior walls, engineered to repair plaster cracks up to 3 mm with long‑term flexibility. Its advanced formulation delivers excellent crack‑bridging ability and strong mechanical strength, so treated cracks are far less likely to reopen, leaving a smooth, seamless surface that is ideal for subsequent primer and paint application. As a key step in the Jewell Watertite waterproofing system, it not only corrects visible surface defects but also supports the long‑term performance of DampSeal Primer, WaterLoc and DampLoc coatings on damp‑prone substrates.

The product is water resistant and easy to apply with a putty knife, allowing for quick, efficient crack filling on both new and existing plastered surfaces. It is designed for fast recoating in 2–4 hours, helping contractors maintain site productivity while ensuring durable repairs. With a practical coverage of about 110–140 sq.ft per kg and supplied in a convenient 750 g pack, Watertite Crack Filler is ideal for targeted crack repairs as well as systematic crack treatment across larger wall areas.