Loctite PL Marine Fast Cure Adhesive Sealants, Waterproof Construction Glue for Fiberglass, Vinyl, Glass & More - 3 fl oz Cartridge, Pack of 12

I had a difficult problem. I bought a rainspout adapter which diverts water outside of the aluminum downspout into a water barrel. Problem was that it is made of rubber, flat, and up against an aluminum and wavey shaped downspout. Of course it leaked like crazy. If only I could find some way to seal this to stop the leaking. This stuff did the trick. It is white, and a very thick consistency. Formed a perfect seal and in addition holds very strong. It sticks to everything including your hands so be careful. Bought another tube for just in case. Unused product will stay usable in the tube for a while, but for longer term, you may want to place it into another very air-tight container. Highly recommended.

Worked as intended and would recommend

I use a lot of this in my business, it has proven to be a really great product, totally fine with being wet constantly, fine with salt and other caustics. Sets up reasonably quickly. Would not recommend applying to anything wet or submerging in water before cured, minimum of 24 hours.

the adhesive/sealent is awesome it sticks to everything ive tried it on well and it dries flexible yet its tough enough that if you put it in the wrong place or make a mess you wont peel it off easily! the downside is the thickness makes it not easy to dispense (ive thougjt i was surely going to blow the back out of the tube) and on both tubes ive used the product dried in the nozzle each time so i had to use a nail to poke it or try to pull the plug of dry stuff out with pliers etc but even with that inconvienience i think its still worth the money because its such a good all around adhesive and sealant!

I would recommend, bought a boat knew nothing about boats but did research and found this and it’s worth every dollar. Had cracks on the boat but was on water for 3 hours and got nothing

Used on fiberglass to fiberglass bonding, works great! I used to use the 3-M version of this, and now using this, I won't go back to 3-M

The product does shrink when curing so you can be a little bit messy and it somewhat contracts and looks a lot better if appearance matters. Once cured it is crazy strong. I was gluing pressure treated wood to concrete and it feels like it is bolted down. It is rather sticky out of the tube so have paper towels or a rag handy for your hands and tools.

I did a lot of tests with this stuff with goal of using for my shower. It passed all my tests well. This stuff has no odder. Superb. I scrubbed everything with mineral spirts and Used this product. You need a good quality caulking gun. This stuff is a little stiff but not bad, There is a learning curve to this so practice on something else so you know what your getting into. It sticks well and am hoping shower is good for years now. If you want to run your finger down it to smooth it out, use mineral spirts on you glove first and it will look good. For me now time will tell.Big note: This stuff adheres to epdm Rubber roof very well. after a week tryed pulling rubber apart and the plies of rubber split apart before the pl marine let go. very impressed. rubber roof must be very clean.