Can I spray foam into a hollow core door?
Can I use "Great Stuff" foam (the blue can, which "doesn't bow doors & windows") and fill plain hollow core doors without causing damage to the door? Which edges (and how many holes) would you use to do this? I figured I'd drill holes the same diameter as wine bottle corks, and then use those to plug the holes.)
We have two doors leading to attic storage, and I'm planning on adding solid extruded foam panels behind the doors as well.