Originally Posted by finskie
Just because i was curious, I emailed a sail maker by the name of Bill Shore (shore sails). I asked him what was the prefered method of attaching 2 pieces of cuben. I figure that a sail is put under considerably more force than a tarp. So his response was that all three methods had been used (sewing, glueing and taping). What was interesting is he said that sewing was added to glueing for "hotter climates". Now a sail at sea is getting the full brunt of the sun all day. I'm sure that a tarp does not suffer the same amount of prolonged heat. Still, it makes me wonder about temperature changes over time affecting the chemistry of the "bonding" or "taping" method. Only time will tell, but I'm thinking it may be a non-issue where tarps are involved.
I checked out the technical bulletins that 3M issues for their various adhesives, such as this one
for 9460PC adhesive transfer tape. If I'm reading it correctly, the level of heat a tarp would be subjected to is not a problem.