jwilly3879
Sawhorse
Is anyone allowing 3/4" tongue and groove pine boards to be used as the required 15 minute thermal barrier over spray foam insulation?
The reason for the question is I am seeing more spray foam insulation and the SPF contractors seem reluctant to tell the contractor/homeowner about the requirement for a thermal barrier or ignition barrier. I am located in Climate Zone 6 in NY and when open cell SPF is used a Class I or II vapor retarder is required in addition the the thermal barrier.
When doing the insulation inspection I generally ask what will be used for the thermal barrier, 1/2" sheetrock or an intumescent paint product and the usual response is "what are you talking about?"
I have heard that NYSDOS is working on a table of 15 minute thermal barrier equivalents based on Chapter 7 of the Building Code.
The reason for the question is I am seeing more spray foam insulation and the SPF contractors seem reluctant to tell the contractor/homeowner about the requirement for a thermal barrier or ignition barrier. I am located in Climate Zone 6 in NY and when open cell SPF is used a Class I or II vapor retarder is required in addition the the thermal barrier.
When doing the insulation inspection I generally ask what will be used for the thermal barrier, 1/2" sheetrock or an intumescent paint product and the usual response is "what are you talking about?"
I have heard that NYSDOS is working on a table of 15 minute thermal barrier equivalents based on Chapter 7 of the Building Code.
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