[rickst29]

For the case of mounting glass panels on Z-bar brackets, you will want to have full 1" width along the lower part of the bracket. They're only about 4 inches long, and the total surface area would be reduced (badly) by using less width.

For the case of mounting 'flexible' panel, I have used 1" width in the past, but now prefer width of either .6 inches or .75 inches. Any of those widths is "adequate", but the 1" width goes past the the edge of most flex panels and underneath the cells. The greater width is harder to cut, and removing a panel creates some risk of damaging the panel assembly when the tape stretches to far inwards.

For all cases of mounting with good contact, I slightly prefer a thin tape (0.40 thickness or less), rather than the thick ones with more foam in between. 'RP36' and '4950' fit the bill. Only for the case of a Z-bar foot not reaching down to the roof shell surface (due to the shells being bent, rather than flat) would I use thicker pieces.

In the past, fearing inadequate adhesion, I have used large amounts of VHB along my flex panel edges - up to 40% of the total edge length in the most extreme case. I'm moving and adding a couple of panels in the next two days., and intend to use much less as follows:

Just 8 pieces slightly less than 4" long each (total about 30 inches). One piece angled at 45 degrees in each corner, additional peices centered on each "long edge", and slightly shorter pieces centered along the each "short edge". Avoiding grommet holes, of course.

I have found subsequent removal of VHB tape to be pretty easy for the "gray foam versions in a hot garage, and absolutely beastly for the case of a su[per-thin "white foam" version. But that white foam tape might not have been a normal consumer product.