Liquid Rubber Multi-Surface Waterproof Sealant, Black, Indoor & Outdoor, 1 Gallon

Haven't had rain so cannot comment on the waterproof aspects of the product. However I can tell you that a physical inspection tells me there will be no issues. The sealant goes on like a thick tar. I kept feeling it as it remained somewhat sticky for a few days. Eventually it was not sticky and felt like a solid hard tar finish. I can tell this will do a fantastic job. I will be ordering more of this in the coming years should the new coating appear to be breaking down. Time will tell. Bob S.

Goes on thin so use about 4 - 6 light coats. Flashes off within 15 min. in warm temps & is easy to use. Keep stirring can as it'll 'skin' over in warm sunlight. Will seal effectively after it's cured!

This is a great product, been having problems with my roof for years and this has finally fixed it

Very appropriated. The time to reach here was perfect and the item ordered meets my need

Great product, I used this on an olders house and it stood the test of time.

Does what it's meant to do. No strong odor when applied indoors. Love that it has no COVs

Built skylight curb, applied primer, sealant applied successfully

Good product overall. Used this for sealing the top side of the deck joists before installing the deck-boards.

Works well. BUT Use thin, thin Coates on cinder blocks. I must have put it on to thick it never dried after weeks melted off when the rain hit -Big mess for me.

We put on reptile inclosure. It never dried and was sticky to the touch. We had to put sealant over it to get sticky out.