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Spray Foam Application Question

user-7230964 | Posted in General Questions on

I’m hoping to get advice on filling framing cavities with either open cell or closed cell spray foam. I have 4 framing corner cavities measuring 3 1/2 x  1 1/2 in x 9 ft and 4 rafter cavities measuring 3 1/2 x 9 in x 21 ft with nothing in them but air and no access.  The structure in undergoing a major renovation so all sheetrock and interior paneling is removed  The current plan is to drill 1 in holes every 16 in or so and fill with closed cell spray foam.  I have several concerns.  The foam applying too much pressure to the members and moving them, the foam not curing properly because it can’t cool rapidly, and leaving portions of the cavities unfilled because of air pockets.  

Is there a better option?

 

Many Thanks,
Steve

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