So leaving the vinyl in the car, under 'direct' sunlight has shown one strength, and one weakness in my implementation.
The good news is that the vinyl stays very stable, and so does the contact cement. No warping or pulling like duct tape does, and no loosening of the adhesive at all. Even where the vinyl is cemented directly to the foam, it has yet to show any signs of weakness. This is still at only about the high 70's Fahrenheit, so still not verified as playa-safe just yet. The bad news is that 'edging' all the triangles with masking tape is not a good idea. The adhesive is not durable enough, and becomes loose in the heat. If most of your cemented area is on the masking tape, then you are undermining your construction. It is better to directly adhere the vinyl to the boards, including the exposed foam edges. While the vinyl was nice and warm(soft), I was feeling confident and tried my "tear like a phonebook" test. It passed this easily. I was more worried I would snap the boards than tear the joins. This method is likely to leave the joins more stable than the actual polyIso itself, so if the boards can handle the wind, these joins should have no problem. I highly recommend/encourage others to try this method out and let me know how their testing goes. This could be a viable solution to a more permanent structure. -- You received this message because you are subscribed to the Google Groups "hexayurt" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/hexayurt?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
