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Hi there. I have a two story (really a story and a half) cape cod home located in Pennsylvania in which the second story is very hot during the summer. Capes in the area typically didn't have a finished second floor but have been finished to make livable over time. So, there are many issues resulting in the hot second story. First, the roof has 2x6 rafters and is insulated with r13. Second the roof has no ventilation. Third, hvac system was never designed to properly ventilate and cool the second floor. The roof currently needs to be replaced and I am looking at options to better ventilate and insulate the roof with the existing construction. There are no vented soffits so I am looking at using a roof edge inlet system to get air low I to the roof with a ridge vent. As for increasing insulation value I am considering packing the rafter pockets with rigid foam board, 2 layers of 2", which should give me close to R26, with the right product, while leaving the needed air gap for ventilation. I am looking for any thoughts, recommendations, or experiences that could help. Obviously ripping the entire roof off and constructing properly then modifying the hvac system and duct accordingly would be the absolute best solution but at that point I may as well tear half the house down and start over. But, not looking to do that.
 

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Capra Aegagrus
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