New roof covering went on just before the recent snow storm. Substrate of tapped water resistant 3/4″ OSB covered in a synthetic overlay. I understand it was pretty hard work getting the 4×8′ sheets of OSB up to the roof as the lift couldn’t get close enough to the house so they had to be carried and those sheets aren’t light.
When it gets warmer we will have a layer of EDPM which is a synthetic rubber roofing membrane. The latex glue used with EDPM requires a minimum temperature of 50F/10C for a couple of days so it will be a few months before that happens. We will get the thickest membrane we can to help it last which is 60mil (1.5mm or 1/16″).
This new roof sheathing has stopped 90% of the leaks which is good news. The remaining 10% of leaks will be stopped when they fix up the sheathing in one last corner.
