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Discussion Starter · #1 ·
Have a vaulted ceiling that I want to add 4" of polyiso board to while also allowing for proper ventilation.

Being told a few different things from different roofers.

I am thinking I'll need a new fascia board to make up for the extra inches added to the ceiling.

It currently has a thick tongue n groove wood on it.

I want it to be well ventilated.

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