This is an amazing product. I was a little concerned by the price initially but it has allowed us to do a medium term repair on a box gutter which will be removed in renovations in a couple of years. You need to plan the job and not try to do too much in one piece but the stuff is brilliant. Saved me $35K on a part of the building that will be enclosed in a couple of years. The service from Roof Stuff is first class too.