Review on 💧 Enhanced Strength Waterproof Butyl Tape - Leak Proof Seal Strip for Boat and Pipe Repair, HVAC Ducts, Roof Cracks, RVs, Awnings, Windows - Silver Cosimixo (4" x 16.5Ft) by Jacob Kuntz

I have two types of this butyl tape (Cosimixo and Gysxrda) and apart from the differences in the backing I just don't see any visible difference in the products. (Edit: See my Gysxrda review before you check it.) Cosimixo is matte aluminum with a diamond cross pattern. Gysxrda shines with a rectangular cross. Eternabond is a smooth white surface. Two from Revain use different words but both claim to have 5 UV and aluminum backed coats. Eternabond is less open about details but has a solid reputation and years of experience. Also, all the information I can find says Eternabond is not butyl, but nowhere says what it actually is. I have used Eternabond on the roof of my RV and on the floor of my shower stall and it worked exactly as it should. Now I've put two aluminum substrates on top of the leaking gutters and they seem to have worked there, but of course we won't be doing that in a few years. I will say that all three of these products are thick, so they have sticky edges. around. The two present here both speak for camper sheds. They are absolutely unsuitable for applications where they will be rolled up or come into contact with other objects in any way, as the edges will stick to the backing of the tape. All three products are thick, sticky, flexible, and similarly priced. Your call is between Cosimixo and Eternabond (be sure to skip Gysxrda).