Cofair BST325 EPDM Quick Roof Seam Tape - 3" x 25'

This stuff works great. Follow the instructions and you will be pleased. I encountered no problems.

I used this product to keep water from working its way between a flat rubber roof and the aluminum drip edging. The tape is like a strip of rubber with adhesive on both sides that sticks immediately to anything it touches. The rubber stretches like a piece of chewing gum if you try to remove it for repositioning. It will come off but stretches out of shape and cannot be reused. I cleaned both surfaces with a rag soaked with a deglosser liquid available in any paint supply area before applying the tape. The rubber tape is a little under 1/16" thick. I am hoping that it will have enough give to compensate for the differential, thermal expansion between rubber and aluminum while remaining stuck to both surfaces. The horizontal surface of my drip edge is about 2 3/4" wide and lays on top of the rubber roof for a variety of reasons. December 2014 update - Still stuck to both surfaces January 2017 update - Still working like the day I applied it. I should point out, this tape sits between the rubber roofing and the aluminum trim, both of which are covered with pea gravel. The tape does not see any sunlight.

Good quality product

Sticks so fat for my patch works great !!

It’s a great product. I recommend that you follow the instructions well. Make sure your work surface is very flat before starting.

I have purchased this same product a few times over the last few years. The first ones were very good quality. The last two roles I got have pits that cause air pockets/bubbles between the tape and EPDM rubber. It's probably not a problem with respect to the seal, but it makes the finished job look poor quality. The manufacturer needs to fix their process/equipment to get quality back to what it used to be.

I like to buy local so I bought some seam tape from a local contractor. It was left over from a job and maybe it sat around for some time or something because it wasn't very sticky and it failed. I bought this and immediately noticed the difference. This stuff is very sticky. You need to be careful to get it right the first time but it makes a great seam. I made sure both surfaces were very clean and I used a primer first, let it dry and then this tape. It worked great 3x25 BLK Rubb Seam Tape I highly recommend.

Worked well for me when using an EPDM cleaner spray and EPDM primer spray, during warm weather.