GSSI Sealants Butyl Tape 1/8" x 1" x 50' Gray (Choose 3/4" or 1" Width)

I would say It Is as good as Dicor, If not better In all aspects. I would buy this brand again.

My brother loves this tape. However, his most recent order arrived a bit crumpled because of somewhat inadequate protective packaging when shipping and he had to wrestle the roll back into shape. the tape still performed, but perhaps consider a bit more bubble wrap in future shipments.

I used this product to seal up the corners on an old truck camper. I had to replace some large sections that were rotted but I was able to use the old trim pieces with new screws that were slightly longer and this tape. It is also commonly used around windows and doors.If you’re not sure what this is used for...This product is like a putty and is a “pinch seal”. Your screws will pull the trim to the wall panels and pinch the tape which creates a seal. It also seals around your screws. I usually caulk the edges for extra protection but you don’t have to. Caulk is messy and a pain to get off. Most people use a thin strip of plastic to fill the channel where your screws go. I used a self leveling caulk made for camper roofs. And another caulk for vertical surfaces from the same company. It was expensive but I’m hoping it was worth the cost. Seems to be holding up well. I have not tried to remove either product yet.

I recently replaced a solid door with a full single lite fiberglass door and used this in 5 strips across the leveled sill, that was off by 1/2" over 3'. This is very sticky stuff and is hard to adjust if you get the first placement wrong, so don't be wrong. Keep the paper backing on until you're ready to set the door, period. Then peel it off slowly, especially if you're installing on an old sill, and use a plastic pen or something like it to keep the strip down as you do, if needed. This stuff seals completely, no air, no bugs and no kidding! I've used endless tubes of caulk for many things during my construction life but I know this is better than shooting lines of caulk and hoping you don't drag any out of line while installing the door, creating a breach.

If you've ever bought butyl tape before, you'll notice the warning that's usually on the package. It'll say something like "LAY FLAT", "Do Not Store on Side", etc. Buy this stuff from a retailer on Amazon and there's no telling if those instructions were followed or not. I won't claim to know in this case. I only know that I've worked with a lot of butyl tape over the years and none have been as miserable to work with as this stuff. It was very uneven in thickness and width, indicating that it had been squished along the way, maybe for quite a while. It also had an annoying tendency to stick a lot more to its own release paper than anything else. It would stretch before letting go. Pretty disappointing.