Is there any difference between the outside insulation with foam and inside with foam in crawl space insulation?
The code does not dictate whether to insulate the outside or inside of a conditioned crawl space. However, for the outside there is language requiring the rigid board insulation be protected (ie, flashing or cementious scratch coat). RES check treats the insulating value of both installation the same for crawl spaces.
Related Questions
- How should I add a 1.5 inch layer of foam board insulation on the outside of our new house that is under construction?
- Is there any difference between the outside insulation with foam and inside with foam in crawl space insulation?
- What if cured foam insulation is exposed to temperatures outside of the working range?
