Crawl space insulation

I’m looking to get my crawl space encapsulated due to humidity issues. My crawl space also has plumbing piping throughout but no HVAC/duct work, so we would also get a dehumidifier. The previous owners put batt insulation in the ceiling/floor joists of the crawl space. I’m torn about whether I should insulate the ceiling of the crawl space or the walls. Seems like popular thought is to insulate the walls and not the ceiling. However, I’m concerned that the musty crawl space air/smell will leak into the living space if there isn’t any insulation there. Insulating the walls will help with keeping the pipes above freezing, but not sure if I need to be worried about that. My crawl space is currently vented, and they haven’t frozen yet. What should I do? submitted by /u/Time-Dig-11 [link] [comments]

Mar 13, 2025 - 03:15
 0

I’m looking to get my crawl space encapsulated due to humidity issues. My crawl space also has plumbing piping throughout but no HVAC/duct work, so we would also get a dehumidifier. The previous owners put batt insulation in the ceiling/floor joists of the crawl space.

I’m torn about whether I should insulate the ceiling of the crawl space or the walls. Seems like popular thought is to insulate the walls and not the ceiling. However, I’m concerned that the musty crawl space air/smell will leak into the living space if there isn’t any insulation there. Insulating the walls will help with keeping the pipes above freezing, but not sure if I need to be worried about that. My crawl space is currently vented, and they haven’t frozen yet.

What should I do?

submitted by /u/Time-Dig-11
[link] [comments]