Geocel 2320 Gutter Sealant White 3 Pack

I initially used this to seal the gutters and tried to apply when it was wet. It did not work well at all, and just slid all around inside the clean gutter. Later I went up when they were dry, and the new sealant stuck very easily and was extremely easy to apply. I also noticed that the sealant I applied when it was wet, apparently ended up settling and sealing the spots but used a lot more in the process.Great value and the leaks have stopped at all the seams I applied

I went thru three other sealants before discovering this brand. It's always best if being applied to a clean spot, but it even worked over a messy and broken soldered seam. It always works the first time.

Exactly as advertised. Initial results after first heavy rain is 10/10

The install went great and time will tell but everything looks good

Sealing gutters. I wouldn't use anything but this product.

Not too viscous, sticks readily and self levels. Not sure if it will handle the thermal expansions and contractions, only time will tell.

Expensive, but it has worked very well for me in multiple situations.

I bought this sealant for my leaky Aluminum gutters. I cleaned and dry the old seams, and applied this stuff but only 1 out of 10 locations does stop leaking, the other 9 locations are still leaking. I will not buy this sealant again. I wasted too much time and now have to redo again.