Are there any issues with Spray-foam next to Batt insulated walls?
We have a project where we there are additions and renovations to an existing residence that has batt insulation throughout. We have specified closed cell spray foam insulation to be used in the addition walls floor and sloped ceilings and batt in flat ceilings. In the existing part of the house where some exterior walls will be renovated we have specified spray-foam. The remaining existing house will not receive new insulation. My questions is, are there any issues with condensation using both insulation types adjacent to each other? A spray foam contractor has brought this up, but I can not find any research on this.
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