I replaced all the sealant on the front and rear caps attachment brackets and all around plumbing vent fixtures, air vents, skylight, refrigerator vent and ladder attachments on the roof of my 2005 Mountaineer by Montana 5th wheel trailer and this stuff worked great during the installation process

This 4 pack was enough to replace 3 vent stacks, the refrigerator vent, shower skylight and exhaust fan on my rubber RV roof

I had to seal a new refrigerator vent

This product was recommended for recaulking/sealing the rubber roof of my RV, as well as we installed 2 MaxxAir ceiling fans, one in an existing hole, plus one in a new hole we cut out

The first time, three years ago, I did a complete sealing job around all vents and skylights, as well as, the seams of the rubber roof

O ordered self-leveling dicor for my RV roof vents and when it was received , it was not self-leveling, I like Dicor products but this really bother