Did a quick read on wet fill cellulose last night and there seems to be a happy point where everything just works right. But I also noticed that even in that there is a lot of it that doesn't stick and a fair amount of cleanup and sending back through the sprayer.
You read it right.....very steep learning curve with this stuff.... I can't charge the bil for experimenting, and couldn't keep practicing for free.....so, fiberglass.
Foam is 4x (or more) the cost, works very well, and regardless of what who says it can cause sweating, unfortunately.
That makes sense with air space.
For foam I would assume they should install rafter vent panels. Around here you would have to make sure they were spraying closed cell. Lots of places will make a low quote and spray open cell instead. Too many years of dealing with the general public and seeing how people live and conduct business, including things I have payed to have done, have left me a little skeptical. One of the reasons I do everything I can myself.
How can you see moisture between the foam and metal roof if they sprayed the foam directly to the roof?
When you cut into it to do repairs or additions.
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This will keep ticks off of you and it is safer than deet if you follow the directions.
