Day 57,
A pretty good day, 70 degrees.
Finally, I finished the roof covering. This was one of the harder jobs for one person. The PVC panels are pretty flexible and I had to wait for a calm day to do it. I ran the panels crossways and trimmed one end- they overlap about 12" ( 2 overlap seams) starting at the rear and going to the front. I used the same ProVantage adhesive on the plywood to bond the panels. The PVC seams had a bead of Sikaflex 212 at the inner & outer edge of the overlap seams ( about 1" in from the edge) and a generous 1" wide bead of PVC glue in the center of the overlap ( last step- it sets up quickly) Then I pushed the overlap together and smoothed it out. I tested the glue on a couple small pieces of the panel and I couldn't pull the seam apart without tearing the panel.
Tomorrow morning I will install all the 90 degree aluminum edging with more Sikaflex and lastly the top edge is covered with Dicor self leveling adhesive, with will completely seal the edge of the roof panels. I hope the 1/8" of panel gap that I allowed around the perimeter is enough for for summer expansion. Later, I will need to put some kind of coating (coolseal?) on the roof for some UV protection.
I put a lot of thought into this roof- the die is cast. I will find out this spring how well I did. I won't finish the inside walls and ceiling until I am confident that I don't have any leaks.
I used one layer of 5mm luan running long ways and then a second layer of 1/16" luan running crossways after I decided that one layer was too flexible. Secondly, the two glued layers will be more likely keep the roof crown from sagging over time. I can get up on the roof, if I ever need to.
In case anyone is wondering, the water in the background is a gulf access canal connecting to the Caloosahatchee river.
https://en.wikipedia.org/wiki/Caloosahatchee_River
glue - it's used locally for irrigation piping- severe duty stuff.
