Open cell cathedral ceiling/roof
We just completed a major renovation of a house in CT that involved adding living space in the attic. The cathedral ceilings with dormers all have 8″ (approximate average in 2×10 rafters) open cell foam. Underside of rafters are drywalled and taped without paint and T&G wood bead board painted on both sides is installed for the finished ceiling. The problem is with the bead board expanding and buckling. From the construction photos I noticed that the 2x blocking to close off the rafter bays from the eaves were not installed. The post insulation photos show just big gobs of foam filling the void, but I can not tell you how completely it is sealed off. I am suspicious of this area.
It is summertime so there is lots of moister outside that wants to get in given the opportunity.
Anybody else had a similar issue?
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