Air sealing services in Hanahan SC - a house that holds the cool air you pay for

Air sealing with caulk, spray foam and weatherstripping usually runs about $500 to $1,500 per job across the US, and that's a national figure, not our price. Where your house lands depends on how many openings there are, how much old insulation sits over them and whether any of it has to come out first. The estimate gives you the figure for your own house.

You may, if you buy your electricity from Dominion Energy South Carolina. Its home energy program is open to the utility's residential electric customers, owners and renters alike, and eligible Home Energy Check-up Plus participants may receive help toward qualifying attic insulation, air sealing and duct sealing, up to $2,880. The offer runs through March 31, 2027, so if you qualify, it's worth planning the work before then.

You can find the obvious ones, like a draft at the hatch or daylight around a pipe, but a do-it-yourself search usually misses the small leaks, especially in an older attic where layers of insulation cover them. In an existing house, the leaks that matter most are often the ones an owner is least likely to find alone. That's the part of the job most worth paying someone for.

It is, when the appliances get checked first. Federal guidance calls for a combustion safety test in homes with fuel-burning appliances that vent on their own draft up a flue, like many older water heaters and furnaces, to make sure fumes aren't spilling back into the house, and any problem gets fixed before sealing goes ahead. A tighter house can also need a fan system that brings in outdoor air, and we'll tell you if yours looks like it does.

Ask how they'll measure the result and what training they hold. Federal guidance calls for a blower door test, a fan test that shows how airtight the house is, before work starts, with a target set from it so the job has a clear goal, and the Department of Energy names two certifications, the Building Performance Institute Building Analyst and the RESNET HERS Rater, that you can ask about when comparing bids. We're fully licensed and insured, and our work is satisfaction guaranteed.

Yes. When an existing vented attic gets new insulation, the guidance is to seal every opening through the attic floor first, because insulation laid over open gaps just ends up fighting a draft. It's also a lot easier to seal while the attic floor is in reach than to dig through a fresh layer later.