Welstik Tape Flex Seal Tape Leak Repair Waterproof Tape Duct Tape, 4''x 60' 4''x 60"

Works great for patching holes in koi pond liner.

For what I needed for it worked perfectly. Also adhesion is very good. Used it outside.

Used this on the roof of my car as was having sunroof issues... let me tell you it sticks really well ...didn't break down from the elements. Was extremely hard to remove.If you want it for holding or a possible leaky roof great product.

Didn't stick when my boots got wet! The tape may be waterproof, but the sticky stuff sure isn't! Totally useless because of that!

I gave this a try today. I used flex tape on half my leaking moon/sun roof on the car. (Not realizing one roll wouldn’t do the job) Flex tape was unavailable immediately through Amazon prime. This product was and it’s better priced. I’m sorry to report back this isn’t even close by far. The thickness is like regular duct tape, it doesn’t adhere to clean or painted metal very well, the parts that did stick came loose after a while. One pro it looks very nice but it doesn’t do the job I expected. My local CVS had one roll left (there seems to be a run on this stuff) of Flex tape. I’ll be removing (if it doesn’t fall off over night) this tape and replacing it with flex tape. I can’t recommend this tape. It doesn’t adhere to what I need it to. I’ll be returning the second unopened roll for a refund. Sorry it’s no good.