Loctite PL Marine Fast Cure Adhesive Sealants, Waterproof Construction Glue for Fiberglass, Vinyl, Glass & More - 3 fl oz Cartridge, Pack of 1

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.

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.

I wanted an adhesive that is extremely strong in all kinds of weather. Ive read a lot about this and read many reviews. Since I'm in incremental weather and stay in a van I worry about condensation, this stuff takes the worry away. I was able to add it to wood, attach to metal and then drill through/into both after two hours! That's holding power

Good product, I bought this after some research on-line as to what product would serve my purpose well. I'm using this to seal up some electrical items on an off-road vehicle, where what I had to do, in order to make something work...exposed some items to the weather, therefore this came into play. For clarity this seals up access to some things I had concerns about weather exposure.

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.

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 got tired of 3M 4200 drying in the tube after a couple of uses and tried this. PL Marine is easier to work, doesn't dry up after multiple uses and doesn't discolor over time in the sun. It's adhesion is about 75% stronger than 4200 and about half as strong as the 1 week curing 5200. It is flexible and non-permanent, thus a direct competitor to 4200, which I will never use again after finding this. 3M has a newer product called 4000 that specs similar to PL Marine, but I haven't tried it yet and won't bother to as long as this is available.