Roofing questions – Deck house
I have a Deck house located in the cold climate of New England. It is currently insulated with 1-1/2″ of polystyrene with a rubber roof. As the deck house is exposed beams with exposed 1-1/2″ tongue and groove fir. The rigid insulation is on top.
I am exposed on the water to high winds. The tongue and groove planks extend beyond the interior 4′-0″ in all directions. The winds get into the underside of the 4′-0″ eaves, under the insulation, and into the house through the planks. I am going to install a wind barrier under the eaves (a plastic called membrane), followed by a 3/8″ air gap with nailer strips, followed by tongue and groove 3/8″ fir to match under the eaves. On top as a new roof I am asking the roofer to apply 4″ of Polyisocyanurate followed by EPDM roof. Do you feel this is the right solution? Should I increase foam thickness?
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