Can I use this product on a flat rubber roof that has a 2” long cut in it?

Hey there! Certain rubbers, vinyl, and plasticized materials may resist adhesion from the Flex Seal Family of Products due to a high number of polyolefins. This polymer is added by manufacturers in undisclosed amounts to help the surface resist weathering and other environmental factors. For this reason, we usually recommend testing a small area to ensure desired results and proper adhesion. If you have any other questions or need more specific advice, send us an email at humans@flexsealproducts.com or a DM on socials with more information. We're here to help!