W4 Mastic Sealing Strip for Caravans & Motorhomes White 45mm – Weatherproof Sealant for Overlap Joints, Awning Rails, Roof-Lights, Window Surrounds & External Trims, Durable & Easy to Apply

I recently purchased the W4 High Performance Mastic Sealing Strip, and I must say it has proven to be an excellent product. This short review aims to highlight the strength and reliability of this sealing strip based on my experience.The W4 High Performance Mastic Sealing Strip offers exceptional strength when it comes to sealing various surfaces. Whether I'm working on my caravan, motorhome, or any other application that requires a reliable seal, this product delivers outstanding performance.One of the standout features of this sealing strip is its remarkable adhesive strength. It securely bonds to different materials, including metal, plastic, glass, and rubber, ensuring a tight and long-lasting seal. The strip creates a barrier against water, dust, and other contaminants, providing added protection and durability.The sealing strip's high-performance mastic material is resistant to harsh weather conditions, UV rays, and temperature fluctuations. This resilience allows it to maintain its strength and effectiveness over time, making it suitable for both indoor and outdoor applications. It provides peace of mind, knowing that the seal remains intact even in challenging environments.Furthermore, the W4 High Performance Mastic Sealing Strip is easy to use. It can be cut to the desired length and applied directly to the intended area. The strip conforms well to irregular surfaces, ensuring a complete and secure seal. Its flexibility allows for easy installation around corners and curves without compromising its strength.The versatility of this sealing strip is worth mentioning as well. It can be used in various applications, including sealing joints, filling gaps, and preventing leaks. Whether it's for automotive purposes, household repairs, or DIY projects, the W4 High Performance Mastic Sealing Strip proves to be a reliable and multipurpose solution.In conclusion, the W4 High Performance Mastic Sealing Strip is a must-have for anyone in need of a strong and reliable seal. Its impressive adhesive strength, durability, and versatility make it a valuable addition to any toolkit or repair supplies.If you're looking for a sealing strip that offers exceptional strength and reliability, look no further. The W4 High Performance Mastic Sealing Strip will exceed your expectations and provide a long-lasting seal in various applications.

Bought this to replace a caravan skylight. Really easy to use and prep before fitting, just cut to the required length. The sealant tape is pretty flexible which allows you to follow contours etc.Thoroughly recommend 👍

This is the best you can buy and does the job really well provided the surfaces have been properly cleaned. Very sticky and waterproof, this is motorhome maker's go-to choice.

Brilliant!Our roof vent was leaking at the seal, so used this and its held tight for over 2 years now- no problems!Recommended.

I used this as a base for fitting a roof fan onto my van.Very high instant adhesion on a properly clean surface. Be sure that all the joins are touching if not overlapping by a mm or so. It is pliable so you can squish these joins together.I would say make sure you have the fan base or whatever you are bonding, in the right place and position as you set it down because it grips immediately.I was really pleased with the seal this created once I screwed that fan in.I had to wait 24hrs until I applied the sikaflex bead around the edge and it rained overnight.Zero leakage! That filled me with confidence that once fully sealed, it would be seriously watertight.Highly recommend

A1

Great stuff

Obviously bought wrong thing. Wanted to stick some perspex to window frame to keep out draughts for the winter. This was stickier than treacle couldnt detach myself from it! Sure in hands of an expert would be fine but didn't have a caravan to practice on!