Spray foam squirts out of house — potential water vapor access?
I just had my attic sprayed with open-cell spray foam as part of some energy-efficiency improvements. (Yes, all the ductwork is in the attic, and yes, I’m monitoring humidity levels to see if I need ventilation/conditioning to keep the sheathing dry.) Zone 2A, 0.5 lb foam.
Outside of the house, there are a few spots at the soffit where foam squirted through and expanded. Picture some white Nerf footballs wedged behind a 6″gutter that sits under a very narrow soffit. There were no soffit vents, so these are gaps in the soffit or fascia that were hidden by the gutter.
The extruded foam is over 20′ above ground and not easily reachable. My question is whether there’s any risk of the weather-exposed foam wicking rainwater up into the attic, or perhaps adding to the attic moisture load as the water evaporates in the sun. Many thanks!
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