In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
some spiffy solar flashings
these are available in red silicone 437°F continuous temperature. So you can run the copper or SolarFlex thru them then insulate down onto it.
Some models have a small wire grommet built in. They also have the "zipper" type for retro-fits, aluminum base for shingles, and lead style for clay tile roofs.
Bob "hot rod" Rohr
trainer for Caleffi NA
The magic is in hydronics, and hydronics is in me