Cold floors and damp air
Crawl Space Insulation in Georgia and the Carolinas
Crawl spaces drive the two complaints we hear most in older houses: floors that are cold all winter, and a humid, musty smell that gets pulled up into the living space. Both are fixable, and both start underneath.
What this covers
- Insulating floors above the crawl space
- Sealed crawl space wall assemblies
- Replacing batts that have sagged or gone damp
- Rim joist and band board sealing
- Supporting the material so it stays up this time
Crawl Space Insulation is one part of a building's thermal envelope, and it works best when the rest of the envelope is dealt with in the same visit. When we scope this, we will tell you if something adjacent — air sealing, a crawl space, a removal — needs to happen first for this work to be worth paying for.
Who this is for
Homeowners dealing with comfort or bills, and contractors who need this scope covered on a jobsite.
What to expect
How a job actually runs
Four stages, in this order, every time — whether it is one attic or an insulation package across a subdivision.
Assessment
We look at the actual building before anyone quotes a number — the attic, the crawl space, and the places air moves between them. You get told what is failing and why, including the parts we would leave alone.
Material Selection
Fiberglass, spray foam, loose fill or batt: the assembly decides, not the price list. We explain which one belongs where and what the difference actually buys you before anything is ordered.
Installation with energy and noise efficiency
Installed for how it performs, not how it looks from the hatch. Full coverage at the right depth, no compressed batts or missed corners, and the air sealing that makes the insulation behave — which is also what makes a house quieter.
Upkeep
Insulation is not maintenance-free. We tell you what to keep an eye on, roughly when it is worth checking, and what a roof leak, a rodent or a duct repair means for the material we just installed.
FAQ
Crawl Space Insulation questions
My floors are freezing in winter — is that the crawl space?
Usually. Either there is no insulation under the floor, or the batts that were there have sagged and fallen out, which is extremely common in houses past twenty years old. Either way you are heating the crawl space instead of the room.
Why does insulation keep falling out of my crawl space?
Because it was held up by nothing but friction or a few strands of wire, and humidity plus gravity eventually win. Re-installing it the same way gets the same result, so it has to be supported properly the second time.
Should the crawl space be vented or sealed?
That depends on the crawl space — its moisture, grade, ductwork and whether there is a ground vapour barrier. We would need to get under there before recommending one over the other, and we will tell you which one we think it is and why.
Which material suits a crawl space?
Closed-cell foam is the strong choice on crawl space walls and rim joists because it resists moisture as well as insulating. Fiberglass batts still work well between floor joists when the space is dry and the material is properly supported.
Related work
Usually quoted alongside this
Need crawl space insulation?
Tell us about the building and we will scope it properly before anyone talks price.
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