OP, We just got done securing 8 - 100W panels to the roof of our airstream using Scotch 4910 VHB Tape. We are very satisfied with the results. I clean the panels once a week and check that the bond is still secure. So far there is no indication of separation. Hope this helps.
The reason the other poster used VHB tape and Sikaflex to mount his panels is from this video.
If AM Solar uses this method to install panels on customers projects I thought it was worth looking into (especially if I don't have to drill holes in the roof). I was skeptical on the bonding...
In his original post he stated he was thinking of using these Unistrut rails. In post #8 he showed us the way he planed on installing the panels and that he was leaning toward using them (Unistrut). The Unistrut is 1-5/8" wide and I'm pretty sure that the panels are ~20' wide. Since the Unistrut...
I have to ask, did you even watch any of the information I presented? In the AM Solar video please give me a time stamp that corresponds to them using fasteners to attach the solar panels (other than the VHB tape).
Thanks in advance.
I'm surprised this isn't the spec sheet for eternabond. 4910 normal tensile strength is 100psi and 4951 (used by AM Solar) is 85psi @ 200F. That's what the rating is in the data sheet for each tape. Lets do some math shall we? Each of my panels are secured with 2 T-Rails 48"x 3/4' = 72sqin, 72 x...