After doing some research it looks like duct tape uses rubber-based adhesive, and 150 degrees F looks like the temperature around which the adhesive begins to soften. Gorilla tape likely is similar. The tarp tape I originally ordered is also described as having rubber-based adhesive, so maybe it has...

It gets quite hot in Texas in the summer, actually. So as a matter of fact, I did resort to Gorilla Tape because it seems to stick to the poly well enough and I knew if I waited until the tarp tape I ordered arrived, it would be a nightmare to seal all the seams at once in my cramped living room, in...

Hey TomServo,

This is for Flipside so rain is quite likely. I put in ventilation openings where they could be covered by a rain fly, but the seams need to be watertight.

Thanks for the tip about the grommets. I will use that.

Cheers,
the friend