Interior ripped 1/2 inch rigid insulation on studs
Build new custom on the water in ct and plans are done now. They call out for Osb sheathing, spray foam walls. We will also be using a Siga wrb and then vent grid or roll on rain screen. Recently I have become very interested in the reduction of thermal bridging and ways to reduce it on this house.
the engineer is pushing back from zip r because of shear and wind Load because the house is on the water in Connecticut and complete then a complete re-engineer. So thinking about exterior insulation and cellulose in the wall cavity. But the compression of rain screeen into the 1/2 foam concerns me with test I have done. So want a rigid osb or plywood to nail our rain screen to for our cedar shakes. Is 1/2 going to do anything for thermal bridging?
so now thinking of just ripping 1/2’ rigid foam and attaching it to studs with pl adhesive( not full sheets) so not to trap moisture, even thou cellulose would dry in or out or closed cell flash and bat would dry in. My rain screen would then be Directly on the sheathing and wrb. I like this hard smooth straight surface siding. will 1/2 rigid foam on stud face work in reducing the thermal bridging? Would not place it on ceilings only walls and roof rafters to de-couple sheath rock from transmitting studs… any help here and direction welcome!
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