Hot upstairs rooms, a drafty attic or outside noise coming through the roof? We spray foam that seals the gaps and quiets the house.
Open-cell foam insulation is a soft spray foam that B&C North Charleston Insulation sprays in place under your roof deck or inside wall cavities in North Charleston. It slows heat moving in and out, seals air gaps as it goes and cuts a lot of outside noise.
Most people who call about foam have an upstairs that won't cool down in summer, a room over the garage that's never comfortable, or noise coming through the roof, and many live in older houses with a few inches of tired insulation already up there. The price moves with the square footage, how thick the foam goes, how easy the attic is to work in and whether the old material has to come out first through insulation removal. The schedule mostly turns on when your household can be away, since everyone has to be out while we spray. I write the estimate out step by step, so you can see what goes where and what your own house would take.
I come out to look at every job and write the estimate myself, so the person who priced your attic is the one who has actually been up in it. Our installers then do the work with me or a lead installer on site, in the order we agreed on.
I spent years as an HVAC service tech before starting this business in 2023, and that's where I learned the leaks and thin insulation around the equipment were usually the bigger problem. It's why we check the equipment and duct runs before deciding where foam goes.
South Carolina counts insulation installers among its residential specialty contractors once a job runs over $500 for a builder or property owner. We're licensed and fully insured, and when you're ready to talk through your house, call (843) 278-0240 or send the contact form.
Tell us whether it's the attic or the walls and a few dates you could be away, and we'll reply within one business day to set a time. I come out myself for the free on-site estimate and write it up for you, with no pressure and no obligation.
North Charleston's code makes it a misdemeanor to build, add to, alter, demolish, regrade or move any structure without first getting the proper permits, so whether a foam job counts is something we settle for your address before anything is sprayed. Charleston County's building inspections office puts any fines for unpermitted work, plus the retroactive permits to bring the house into compliance, on whoever owns it now. We find out which city or county office covers your address, check what it asks for and take care of any permit your job needs before we start. If you'd like to ask yourself, the City of North Charleston takes permit questions at 843-740-2562, 2564 or 2569.
We're based in North Charleston and work across the cities around it, from Hanahan to Summerville, and if yours isn't listed, call and ask. Many of the houses we see are older, with the air handler and ducts up in the attic and leaks around the hatch, the pipes and the equipment. Foaming the roofline turns that space into an unvented attic, closed off from outside air, and building research finds unvented attics hold up better in hurricanes than vented ones, mostly because the soffits, the underside of the roof overhang, are built tougher.
Open-cell spray foam in the Charleston area usually runs about $1,900 to $2,800 for 1,000 square feet sprayed 3 inches thick. That's the area's going rate, not our quote, and your number moves with the square footage, the depth and any old material or repairs that have to come first. The estimate I write after looking at your attic gives you the figure for your own house.
Go with open-cell when you want a lower price and less noise, and closed-cell where each inch has to insulate more. Open-cell costs less and has a lower R-value, the measure of how well insulation slows heat, but it's a much better sound barrier. If the space is tight and every inch has to work harder, closed-cell foam insulation usually makes more sense.
Plan on being out for at least 24 hours, which is what safety guidance for spray foam advises for everyone living there. The safe time to come back depends on the product, the house and whether children or older relatives live with you, so ask us for your re-entry time, the point it's safe to come back in, before install day. Line up somewhere to stay, and a spot for the pets, before we start.
No, open-cell foam lets water vapor pass through, so it can't serve as the layer that holds moisture back the way closed-cell can. A sealed, unvented attic also needs a way to remove moisture, so that part goes into the plan before any foam is sprayed. We write how your attic will handle it into the estimate.
Guidance for hot-humid climates rates open-cell foam as acceptable in frame wall cavities, where it typically gives high thermal performance. The reason it gives is the fairly small temperature difference between inside and outside in those climates. Walls are easiest to fill when they're open for a remodel or addition, so I'll look at what's behind yours before suggesting it.
