How to Insulate/Ventilate Dormers and a Curved Roof
We are designing/building a cape cod-style home with three dormers and a curved roof. How do we insulate and ventilate the roof and especially around the dormers, or do we? Per the article below, it is suggested to bring the space behind the knee wall into the conditioned envelope and insulate up the rafter at the bottom of the roof. What happens at the top attic above the ceiling joist? Is this all conditioned as well or vented? Is the bottom half unvented and the top half vented?
Additionally, what do we do for ventilation/conditioning at the dormer roofs? They seems so small I don’t know how we will approach those.
For reference we are in climate zone 6/7 and aiming for 10/20/40/60 R-value goals. The side walls are 2×6 with 5.5” of closed cell and a continuous Zip-9 sheathing around. Budget is tight right now and cost is considered in any option.
First time post. Thank you in advance for any insight.
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