Spray foam insulation
Spray foam fits where loose fill can't stay put, like the roofline over attic ductwork or the room over the garage. It seals air while it insulates, though it costs more than other options.
Insulation contractor in North Charleston, SC - fewer drafts and cooler rooms upstairs
Trueseal Charleston Insulation Company insulates and air seals homes in North Charleston, SC. We work in attics, crawl spaces and walls, and I take the time to explain your house to you.
What we find in North Charleston attics
We're based in Charleston, and North Charleston is one of the cities around it we work in, along with Hanahan and James Island. A lot of the houses we get into here are older single-story homes on crawl spaces, often with ductwork in the attic and a few inches of old, flattened insulation over it. In the newer neighborhoods the call is usually a hot bedroom upstairs or the room over the garage.
The price depends on how many inches are already up there, whether the old material has to come out first, how many gaps need sealing and whether foam makes sense where your ducts run. The schedule turns on that same prep and on how easy your attic is to get into. Your written estimate shows every step, prep included, so you see your own figure before anything starts.
North Charleston has its own city government, but the board that licenses residential builders and specialty contractors is a state board, covered in the questions below. We're licensed and insured.
I do the estimates myself
I do every estimate and site visit myself. Our installers do the work, and I come back at the end to look it over with you, so the person who quoted it answers for it.
Even coverage out to the edges
A lot of the attics we redo here are deep in the middle and thin at the eaves, which is backward, so we fill the edges properly without burying the vents.
Sealing usually beats foam
Foam costs more but seals air as it insulates. Sealing the gaps and topping up with blown-in fill, loose insulation blown through a hose, usually wins, unless your ducts run through the attic.
Insulation work we do in North Charleston
Attic insulation
Most attics we open here have a few inches of old, packed-down material. We check whether it can stay, seal the gaps under it and bring the whole attic up to an even depth.
Blown-in insulation
Blown-in fill is the usual way to top up an attic over a single-story house. It settles around framing and wiring and into the odd corners that batts tend to leave open.
Home insulation
When the whole house feels drafty or the power bill keeps climbing, I start in the attic and crawl space, since that's usually where the trouble begins, and work out from there.
Insulation removal
Old insulation that got soaked or filled with rodent droppings has to come out before anything new goes in, or the problem just gets buried. We vacuum it out and leave the attic clean.
Crawl space insulation
Cold floors in winter usually trace back to the crawl space under an older house. We check for sagging batts and damp first, because insulation won't hold up in a wet crawl space.
Wall insulation
Older houses here often have walls with little or nothing inside them. We can fill closed walls through small holes and patch them, or insulate open walls while you're remodeling.
Air sealing services
Air sealing means closing the gaps that let outside air in, around doors, windows, outlets and pipes coming up through the floor. It's often the first fix worth making in a drafty house.
Basement insulation
Basements are rare around here, so this call usually means a lower level or a below-grade room. We check for moisture first, then pick a material that won't soak it up.
Closed-cell foam insulation
Closed-cell foam is a dense foam that blocks moisture as well as air. It suits crawl space walls and spots that stay damp, and it's the priciest choice, so I only suggest it where it earns its keep.
Open-cell foam insulation
Open-cell foam is softer and lighter, and it's a common pick under the roof deck when ductwork lives in the attic. It seals air and quiets the house, but it doesn't stop moisture.
Commercial insulation
We also insulate small commercial buildings like offices and shops in North Charleston. I walk the space first, because the ceiling type and how the building gets used change what makes sense.
Crawl space vapor barrier
A plastic sheet laid over the dirt keeps ground moisture from rising into the crawl space and the floor above. We overlap and tape the seams so damp air can't slip through the gaps.
Vapor barrier installation
Vapor barriers go where moisture moves through a wall, floor or ceiling. In this heat and humidity, one on the wrong side can trap water, so I explain where yours belongs before we install it.
Attic air sealing
Before we add anything up top, we seal the attic floor around can lights, plumbing stacks, wiring holes and the hatch, so cooled air stops leaking up and the new insulation isn't fighting a draft.
Retrofit insulation
Retrofit means adding insulation to a finished house without tearing it apart. In older homes here that usually means topping up the attic, filling walls and working from the crawl space below.
Get a written insulation estimate for your house
Send the form and we'll reply within one business day, by phone or email, whichever you used. I'll set a time to come out, and the on-site estimate is free with no obligation.
Tell us what you notice
A hot room upstairs, cold floors or a jump in the power bill tells me where to look first, so mention it in the form and I'll start there.
Honest about small jobs
If your attic already has plenty and only needs a few gaps sealed, I'll tell you that. I'd rather lose the sale than talk you into work you don't need.
Old wiring isn't a crisis
If I find old wiring or vermiculite, a pebbly gray-brown insulation from older houses, I treat it as an ordinary first step, explain what it means and put it in the quote.
Questions North Charleston homeowners ask us
These come up at almost every estimate here, from who licenses the work to when you can get back in the house.
Who licenses home improvement contractors in North Charleston, SC?
South Carolina's Residential Builders Commission licenses or registers residential builders and residential specialty contractors who work on houses up to three floors tall. For builders, its definition covers building, repairing or improving a house, or offering to, when the job costs more than five thousand dollars. Commercial work and individual trades are licensed separately. We're licensed and insured, so ask about it when I come out.
What building codes does South Carolina use for home work in North Charleston?
Homes here fall under the 2021 South Carolina Building Codes, in effect statewide since January 1, 2023, set by the South Carolina Building Codes Council. The council lets some changes apply only in named local areas, and only after a local ordinance adopts them. If you're curious how the codes touch your attic or crawl space, ask me at the estimate.
Do we have to leave the house for spray foam insulation?
For spray foam, usually yes. Foam has a re-entry time, the wait before you can come back inside, and the foam maker sets it, so I'll give you the number for the product we're using when we plan the job. Blown-in and air sealing work is different, and most families stay home and keep kids and pets out of the way.
Insulation work across our service areas
These are the cities with their own page on our site, and we work in plenty more around Charleston. If yours isn't listed, call or send the form and ask.
Have us look at your attic this fall
An attic is a lot easier to inspect in cool weather, so call (843) 278-0544 or use the form while fall lasts.