Attic insulation in Mount Pleasant SC - a cooler upstairs and a sealed attic floor
If the rooms upstairs run hot or the power bill climbs every summer, we seal the attic floor first, then insulate evenly over it.
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What does a complete attic insulation job include?
Attic insulation in Mount Pleasant means laying insulating material across your attic floor so the house holds its temperature. A complete job also seals the gaps in that floor and deals with the old material before anything new goes in.
Most people call us because a bedroom over the garage stays hot, or the house feels drafty and the power bill keeps creeping up. The price depends on how big the attic is, how easy it is to get into, whether the old insulation is clean enough to stay or needs insulation removal, and how much sealing the floor needs. The schedule depends on the same things, plus any roof leak or old wiring that has to be fixed first. Your estimate lists each of those steps with its price, so you can see what you're paying for and compare it with other quotes.
How can you tell your attic insulation isn't doing its job?
Rooms upstairs stay hot
If a bedroom upstairs or the room over the garage stays warm long after the AC kicks on, the attic above it is usually thin, uneven or leaking air around the lights and the hatch. Until that's fixed, you keep paying every summer to cool a room that can't hold the cool air.
Thin spots near the eaves
When you look through the hatch and see deep insulation in the middle but the tops of the joists showing near the edges, the coverage is backward, because the edges sit right over your outside walls. Those thin edges let heat into the rooms below, and they usually get worse as loose fill settles.
Stains, droppings or a musty smell
Dark stains on the insulation or roof boards usually mean a leak, and droppings or nesting mean animals have been living up there. New material laid over either one traps the problem, and a leak left long enough reaches the framing and the ceiling below.
How we handle attic insulation
A good attic job starts underneath the new insulation. First I look at the underside of the roof for signs of a leak, because wet insulation stops working, and any leak has to be repaired before anything goes in. I also check for old knob and tube wiring, an early exposed style of wiring, which has to be dealt with if it's still live, and I find out what the old material is, because that decides whether it stays or comes out. Our crew then seals the attic floor around can lights, pipes, wires and the hatch, since insulation laid over open gaps ends up fighting a draft. They set a baffle, a short channel that keeps the vent clear, at each soffit vent under the roof edge so the attic can still breathe, and then they bring in the new insulation evenly, full depth all the way out to the edges.
Most attics get topped up with blown-in insulation, which is loose fill blown through a hose, because it settles around the framing and into the corners better than rolls do. When the attic is only one part of a house that's drafty all over, we treat it as a home insulation job and look at the walls and crawl space too.
Seal and top up with loose fill
This suits most attics where the old insulation is dry and clean, because sealing the floor and adding loose fill fixes the usual problem for less money. It's what I recommend in most lived-in houses.
Remove and start fresh
This suits attics where the old material has been wet, soiled by animals or can't be identified, because new insulation laid over a problem keeps the problem. It adds a step and some cost, and I'll explain the reason before you decide.
Spray foam under the roof deck
This suits houses where the ductwork and air handler sit in the attic, because foam seals air while it insulates and brings the ducts inside the cooled part of the house. It costs more than loose fill, so I only suggest it when the ducts make it worth the extra cost.
Find out what your attic needs, step by step
We reply within one business day to set up a time for me to come out. The estimate is free, done on site and comes with no obligation. I'll explain what I found in your attic and what I'd suggest before you decide anything.
(843) 416-5007Attic insulation in Mount Pleasant: permits and coastal attics
The Town of Mount Pleasant issues building permits for construction projects over a value its Building Official sets, or that need a structural inspection. Whether an insulation-only attic job falls under that rule isn't settled. So before work starts, we check with the building office for your address, whether that's Mount Pleasant, another city or the county. If the job needs a permit, we take care of the application and keep you informed.
We're based in Mount Pleasant and work in the cities around it. The attics we open here are often hot and humid in summer, with ductwork running through them, and many have been topped up more than once, with the eave vents buried along the way. We see the same attics on jobs in Charleston and Summerville. National building guidance for high-wind coastal areas says wind-driven rain is a problem in vented attics. It also says unvented attics with foam under the roof deck are safer in hurricanes, mainly because their soffits are built sturdier. That's general advice for the coast, not a town rule, but it's one more reason I bring up foam when the ducts are already up there.
What happens when you call about attic insulation in Mount Pleasant?
Call or send the form
Call (843) 416-5007 or fill in the form, and we'll set up a time for me to visit. Tell us a little about the house, such as which rooms run hot.
I look over your attic
I come out myself, go up into the attic and ask a few questions about the house. Your estimate then lists each step, including sealing, any removal and any repairs, so nothing on the bill comes as a surprise.
We check permits and start
If you'd like to go ahead, we check with the building office for your address first. Then our crew covers the path from your door to the hatch and does the work.
Walk through the finished job
Before we leave, I check the crew's work and show you the sealed gaps and the depth out at the edges. I want you to understand what we did and why before we call it done.
Frequently asked questions
How much does attic insulation cost in Mount Pleasant SC?
Attic insulation in the Charleston area usually costs about $1,350 to $4,500 per job, which is the typical range for the work, not our own price. Where your house falls in that range depends on the size of the attic, whether the old material has to come out, and how much sealing and repair comes first. Your estimate gives your own figure, with each of those steps listed.
Should old attic insulation be removed before adding new insulation?
It should come out when it's soiled or might be vermiculite, and it can usually stay when it's dry and clean. Old attic insulation is often dirty with debris, plaster scraps or animal droppings, and some older loose fill is vermiculite, which can contain asbestos, so the safest approach may be to remove it and install only new material. I'll show you which kind your attic has.
How long does attic insulation take, and do we have to leave the house?
A top-up over a sealed floor is the quickest kind of attic job, while removal, repairs or spray foam each add time, so I give you the schedule for your house at the estimate. With blown-in loose fill, most families stay home, and we only ask that kids and pets keep clear of the hatch while the crew works. With spray foam, you're out of the house until the re-entry time has passed, which is the wait the foam maker sets before you can go back in, and we tell you that wait before we book the job.
What causes moisture in an attic after new insulation?
It's usually buried eave vents, a bath fan blowing into the attic, or ductwork buried under the insulation. Covered ducts can collect moisture when their surface cools below the dew point of humid attic air, the temperature where that moisture turns to water, so it's fair to ask any contractor how they'll handle yours. Bath fans that vent into the attic need to be vented to the outside instead.
Will attic insulation lower my power bill?
It usually helps, and it helps most when the attic floor is sealed before the insulation goes in. National guidance puts the bigger savings on insulating the attic, floors and crawl space together and closing air leaks around the whole house. If your house is drafty all over, I'll tell you so at the estimate rather than sell you an attic job alone.
How do I get my attic ready for an insulation estimate?
Clear a path to the attic hatch and jot down what you know about the house, such as roof leaks, its age and where the bath fans vent. I go up into the attic myself, so you don't need to. Knowing about an old leak helps me check the right spot on the roof deck.
Mt Pleasant, SC
Have your hot upstairs rooms checked
A room that won't cool down is often caused by a gap you can't see from the hatch, and one visit tells you whether it's a small fix or a bigger job.