Mastic Sealing Strip Grey – Waterproof Butyl Seal Tape for Roofs, Windows, Doors & Caravans, Flexible Weatherproof Adhesive Strip for Gap Filling, Leak Repair & DIY Applications (32mm)

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.

Brilliant product, used for levelling electric fan on my campervan roof, not a leak in sight

Protecting paper peels off nicely. Adds too easy handling. Can get messy if this is not the case. Good all round tape. Cannot comment on adhesive quality as i HAVE ONLY JUST PUT IT ON, Looking as if it will last though.

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

Brilliant stuff, did just the job on a repair I needed to do. After having a pop top put on our campervan and finding out the hard way that it hadn't been sealed in any way, shape or form...I found this and got the job done, used in conjunction with sikaflex being extra cautious and wanting to leave a good finish on the outside. This was easy to work with, cut to size and sealed firmly down to stop any water ingress. I cut it to the full length required, applied over the screw holes and pressed it firmly into position, was then able to re-secure the poptop canvas down, using the original screws through the original holes, only this time those holes were well and truly sealed around the screw. We have had some torrential rain and fortunately had no more troubles with leaks. When I re-secured the pop top canvas down, the W4 mastic strip did 'bulge' out the edges making it look a bit messy, but i trimmed that excess off with a sharp stanley blade and then added the black sikaflex all the way around to finish the job off. 5 out of 5, but would have been 6 out of 5 if they made it in black!

I use this to stick my extractor fan to my van roof. Works well and is very sticky. Amazing product 👌 highly recommended

Perfect for sealing windows installed in campers and caravans.

This stuff has successfully sealed the front joint on the caravan as the original had broken down and was no longer sealing the joint. The unfortunate thing is that it is sticky on both sides so is picking up all sorts of stuff that I can't wipe off again. I suppose the main function is to seal the joint so from that point of view it works well.

Es perfecto y la anchura es buena para los perfiles tapa tornillos, es suficiente mente gruesa para que al apretar se quede estanco. Lo recomiendo.

Tres bon produit, pratique à utiliser Par contre attention, il n est pas blanc mais gris. Tres urgent donc pas eu le temps de le renvoyer

Utilisé pour l'étanchéité d'un lanterneau que j'ai dû changer sur une caravane. Aucun problème à signaler. Maintenant, il faut bien suivre les consignes d'utilisation et notamment bien nettoyer le support. Je recommande.