Enough of COVID...what are you doing to the house?

Grrr. Next round of problem tenant eviction. Heard a raccoon rumble in the backyard last night and they have torn soffit off the shed and at least a mom and two kits climbed in to sleep. Mother @@%#%^÷&. I threw a radio in the shed playing blue Jay's commentary to try to move them along. Hopefully they leave voluntarily. Bastards.
Got my own squatters ro deal with - found them today while relaxing in my outdoor bar. Bugger is in tbhe rafters, tore away some of the soffit to get in.

Out to bait the trap now. Hopefully, I'll have some raw materials for a hat by morning.
 
You can also do a hot roof (roof without ventilation by just filing the gap with regular fiberglass or rockwool. The air won't circulate enough to have condensation. much cheaper.

If using spray foam, you don't need a vapour barrier, the foam is he barrier.

The right solution is ventilating your roof. For a flat roof that is framed and insulated below, there should be an eave on at least 2 opposing ends, or a connection to another roof space on one end. Adding strip vents will ventilate that space.

If you're having condensation problems from AC in the summer, the problem will be way worse in the winter as the cooler outside air condenses moisture leaving your house onto your roof rafters, decking, and the topside of your insulation. Dark damp attic spaces where humidity stays at 55% or more don't insulate well, get moldy, and rot framing fairly quickly.
A lady I know agreed to an $8K shingle re-roof. When one of the workers stepped onto the roof his foot went through. Not only is the sheathing shot the rafters need to be replaced. 5X price. The previous job was done in some odd way that fed the rot.
 
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