pond liners ,shower liners all work well . i got one in my room too. tarps suck from day one.
good find,
however,
is it neccessary to heat the TPO as it is the case with most roofing materials or can this be done with some glue or other adhesives?
Pond liners do work very well, no doubt about it. For those of you who might need something a little more durable though, check out TPO at any roofing supply company. It is more durable than pond liner and has a nice white color to it, so it reflects a little light as well. Seems are easily dealt with by using TPO tape. This is what we utilize in all our rooms and it holds up for years. Very helpful thread pico!