Started by DavidRaftery, January 23, 2014, 02:57:06 PM
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Quote from: DavidRaftery on July 20, 2019, 12:19:16 PMQuestion on insulation:I currently have R19 under my rafters. I'm thinking of increasing the insulation by adding 2 inches of rigid foam on the inside. 2 inch blue polyisocyanurate insulation has a R value of 13. Can this be used inside or just outside on foundations? The pink XPS is R10 for a 2 inch thickness. I could use furring strips to hold it in place and secure them to the rafters with 3 1/2 inch construction screws. I want to attach the furring strips parallel to the rafters because I want to install T&G pine horizontally in the future.Would this work? Am I missing anything here?Thanks,Dave