Henkel Polybit Polystop CJ4 250mmx10Mx4mm

CJ4 measures 250 mm wide, 10 m long, and 4 mm thick. It features a strong adhesive backing, is water-resistant, UV and weather‑resistant, non-toxic, and designed for durable, flexible seals in various environments.

CJ4 is designed to seal joints in concrete, stone and cement-based materials and adheres well to a range of common construction substrates. For best results, ensure surfaces are clean, dry and free of dust or grease before applying.

Yes. CJ4 is formulated for both indoor and outdoor applications and offers weather resistance, including UV stability, to maintain a reliable seal in varying conditions.

Steps: 1) Clean and dry the surface. 2) Cut the tape to the required length. 3) Remove any release liner. 4) Position the tape over the joint and press firmly along the entire length. 5) Use a roller or your finger to ensure full adhesion and seal. 6) Allow the surface to settle; avoid disturbing the tape during initial curing.

CJ4 is designed to dry quickly and form an immediate seal with firm pressure. For best results, ensure the surface is clean and dry before application and avoid stretching or twisting the tape during placement.

CJ4 is described as non-toxic, which supports safer use in homes and offices. As with any adhesive product, use with adequate ventilation, avoid skin contact, and keep out of reach of children and pets.

CJ4 offers 250 mm width, 10 m length and 4 mm thickness. CJ3 is narrower and thinner (for smaller joints), CJ5 is wider and thicker for larger gaps, and CJ6 provides a longer length. Consider your joint size and required durability when choosing: CJ3 (200 mm x 5 m x 3 mm) — https://fepy.com/product/henkel-polystop-cj3-200mm-5m-3mm; CJ5 (300 mm x 10 m x 5 mm) — https://fepy.com/product/henkel-polystop-cj5-300mm-10m-5mm; CJ6 (250 mm x 15 m x 4 mm) — https://fepy.com/product/henkel-polystop-cj6-250mm-15m-4mm.

CJ4 works well for sealing joints in concrete floors and walls, masonry joints, and other cement-based or stonework. It’s also useful for basic insulation and protective barrier tasks in construction, plumbing, automotive, and electrical projects where a flexible, watertight seal is needed.

Use with proper ventilation and avoid ingestion or skin contact. Wear gloves if handling for extended periods. Dispose of offcuts and packaging in accordance with local regulations; recycle where possible and avoid burning the tape.

CJ4 offers durable, long-lasting performance that can reduce reapplication costs over time due to its elasticity and weather resistance. If you need a different specification, consider the CJ3, CJ5, or CJ6 variants, which are available on Fepy with matching product pages for easy comparison and returns are handled per Fepy's standard policy.

Use sharp scissors or a utility knife to cut the tape to the desired length. For curves or irregular shapes, cut smaller segments and apply gradually, smoothing with a roller or finger to maintain full contact and seal.