For the OP, I'd try polycro. It's used for groundcloths a lot and will take more abuse than normal dropcloths that are thicker and heavier. You can find polycro in sizes as big as 7'x10' (patio door window shrink film).
Originally Posted By Ffej Etaps
I just finished testing a prototype poly tarp (i am guessign 2ml thickness) using LDPE - that's low density polyethylene platic - supported with transparent duct tape. I have been recording the progress of this project and will include a link.

Here is another prototype test using .35ml High Density Polyethelene (please forgive my spelling). I like the HDPE because of its weight to strength characteristics, but I don't have a source for a .7ml version (without ordering a bulk roll of 400 ft.)
Your projects look a lot like mine. smile

I'd recommend using shockcord loops on your tieouts to handle wind loading better.

Why did you think it made a difference in the order of how you placed the tape along the stress lines on the HDPE version?

If the HDPE pokes that easily (similar to mylar?), I think I'll stay with LDPE but I'm actually going to make one with polycro also. I think that would work quite well except for being see-thru.

Edited by topshot (01/20/12 01:35 PM)