W4 Mastic Sealing Strip - 19mm x 5m

The W4 Mastic Sealing Strip is suitable for use on most surfaces found in caravans and motorhomes, including aluminium, plastics, and various trims. Always ensure the surface is clean and dry before application.

The W4 Mastic Sealing Strip is designed for long-lasting performance. The lifespan depends on environmental factors and proper application, but it is formulated for durability.

It is generally not recommended to paint over the W4 Mastic Sealing Strip. The paint may not adhere properly.

Carefully lift the old strip using a scraper or a similar tool. Clean the surface thoroughly to remove any residue before applying the new strip.

Yes, the W4 Mastic Sealing Strip is designed to provide a weatherproof and waterproof seal, protecting against leaks and damage.

If you make a mistake, carefully remove the strip and reapply. Ensure the surface is clean and dry before reapplying.

Use it on overlap joints, awning rails, roof lights, vents, window surrounds and most external trims on your caravan or motorhome.

Check the seal for gaps or damage. Reapply the strip, ensuring proper overlap and firm pressure. Ensure the surface is clean and dry before reapplication.

Ensure the surface is clean, dry, and free from any contaminants. Use a primer if recommended for the specific material. Apply firm and consistent pressure during application.

Check the expiry date of the product. Replace the strip if it has deteriorated. Ensure the strip is protected from direct sunlight and extreme temperatures.