Attic Spray Foam Insulation Kernersville, NC 27284 | Winston-Salem Spray Foam Insulation

Kernersville's mix of 1950s brick ranches and split-levels, newer two-stories with vaulted rooms, and the occasional finished room over the garage all sit on the same red-clay foundation that Winston-Salem Spray Foam Insulation has been insulating since 2012: vented crawl spaces, vented attics that bake at 130 to 150 degrees through humid summers, and walls that were never insulated when they were built.

When a Kernersville homeowner calls us, it is usually because an attic has gone soft with moisture, a room over the garage will not cool no matter what the thermostat says, or a heating and cooling bill has become impossible to ignore. We spray closed-cell and open-cell foam, seal the air leaks that make insulation work, and remove the old insulation that has failed or is in the way. We have been serving Kernersville (27284) and the surrounding Winston-Salem area for over a decade, and we know the construction type, the climate, and what actually works here.

Spray Foam Insulation in Kernersville (27284)

The brick ranches and split-levels built across Kernersville in the 1950s through 1970s came with minimal attic insulation, often just fiberglass batts that have settled into a thin mat or absorbed moisture from the humid air moving through a vented attic. The newer two-stories and the homes with vaulted ceilings and finished rooms over the garage present a different problem: standard blown-in insulation does not seal the air leaks that let conditioned air escape into unconditioned space, so those rooms stay cold in winter and hot in summer no matter how hard the system works. Below, the red-clay crawl spaces that sit under most Kernersville homes collect moisture from the ground and from humid outdoor air that enters through foundation vents. Fiberglass and cellulose insulation absorb that moisture, lose their R-value, and eventually fail. Closed-cell spray foam solves both problems: it seals air leaks and resists moisture, so it keeps working even in a damp crawl space or a vented attic. Open-cell foam costs less and works well in dry attics where air sealing is the priority and moisture is not a risk. We assess the space, the building era, the current insulation condition, and the moisture environment, and we recommend the foam type and thickness that matches the job.

Our team has been serving Kernersville homeowners and property managers since 2012. We provide written estimates that specify the R-value, the foam type, and the thickness we will install, so you know exactly what you are getting and why.

Our services in Kernersville

Attic Spray Foam Insulation in Kernersville · Open-cell foam on the roof deck turns a 150°F Winston-Salem attic into…
Closed Cell Spray Foam Insulation in Kernersville · Two-pound closed-cell foam delivers R-6.5 per inch with its own vapor retarder…
Open Cell Spray Foam Insulation in Kernersville · Half-pound open-cell foam air-seals attics and walls at a friendlier price per…
Wall & Injection Foam Insulation in Kernersville · Injection foam fills closed walls through small ports, no demolition.
Crawl Space Spray Foam Insulation in Kernersville · Closed-cell foam on crawl space walls and rims holds back muggy Piedmont air…
Rim Joist & Band Joist Spray Foam in Kernersville · Rim joists over daylight basements and crawl spaces leak conditioned air at…
Garage Spray Foam Insulation in Kernersville · Garage ceilings under bonus rooms are foam-sealed against radiant afternoon…
Metal Building & Barndominium Spray Foam in Kernersville · Closed-cell foam is the insulation that stops a Carolina metal building from…
Commercial & New Construction Spray Foam in Kernersville · Warehouses; offices; churches; soundstages and production builders served on…
Insulation Removal in Kernersville · Old blown-in and batts vacuumed out before any new foam goes in, never buried.
Insulation Replacement & Re-Insulation in Kernersville · The full reset: old material removed; gaps air-sealed…
Air Sealing in Kernersville · Top plates; can lights; chases; knee walls and attic hatches leak more cooled…

How a Job Works in Kernersville

We start with a free on-site assessment. We walk the attic, crawl space, garage, or wall cavity with you, take measurements, identify any existing insulation that needs to come out, and check for moisture, condensation, or damage that has to be addressed before we spray. We ask about your comfort problems, your energy bills, and any moisture or odor issues you have noticed. We then provide a written estimate with the R-value, foam type, thickness, and price for the work.

On the day of the job, our fully insured crew sets up mechanical ventilation to control odor and off-gassing during the spray and cure. We spray the foam to the thickness specified in your estimate, making sure the ratio and coverage are correct. If old insulation has to come out first, we remove it and haul it away. We seal rim joists, band joists, rim board gaps, and other air leaks that are part of the scope. The foam cures in 24 to 48 hours, and we provide a clear re-entry window so you know when the space is ready to use again. If you are living in the home during the work, we coordinate the schedule and ventilation so the smell and fumes stay contained and do not spread through occupied rooms.

When the job is done, we clean up the work area, remove our equipment and materials, and walk through the finished work with you so you can see what was installed and where.

Attic spray foam in Kernersville typically runs from $1.50 per square foot for open-cell foam (a good choice if the attic is dry and air sealing is the goal) to $1.20 per board foot for closed-cell (the better choice if moisture is present or if you need the highest R-value in the tightest space). A typical 1,500-square-foot attic ranges from $2,200 to $3,500 depending on the foam type, the thickness required by code, and whether old insulation has to be removed first. Wall injection foam for closed walls in older Kernersville homes runs from $2 per square foot. Crawl space insulation starts at $2,500 and scales with the area and the moisture conditions. Insulation removal runs from $950 depending on the volume and the disposal cost. The biggest cost factors are the area to be covered, the R-value and thickness your building code requires, whether the substrate is wet or contaminated (moisture has to be fixed first or we do not spray), and what existing insulation has to come out. Call us at (336) 608-5235 for a free estimate. We measure on site, specify the work in writing, and price it honestly.

✅ Written Estimates with R-Value & Thickness Specs, fully insured for work in Kernersville and nearby areas.

My Kernersville home was built in the 1960s, and the attic is just fiberglass. The upstairs stays cold in winter and hot in summer. Will spray foam fix it?

Yes, if the problem is air leaks. Homes built in the 1960s were not built to be airtight, and fiberglass batts do not seal air leaks, they only slow down conductive heat loss. Spray foam seals every gap, crack, and penetration where air escapes around the ductwork, the electrical wiring, and the rim board. If your attic is currently dry and the existing fiberglass is still intact, open-cell foam is the right choice and costs less than closed-cell. If the attic shows any moisture, soft spots, or discoloration in the insulation, we remove the old insulation first, assess the moisture source, and then spray closed-cell foam that resists moisture and maintains its R-value. Call us at (336) 608-5235 to schedule a free walkthrough.

I have condensation on the rim board and band joist in my crawl space. Does that mean I need spray foam?

Condensation on the rim board and band joist means moisture is entering the crawl space from outside or from the ground, and the rim board is cold enough that the humid air condenses on it. This is a sign that the crawl space is not sealed from the outside air and that fiberglass or cellulose insulation (if you have it) is absorbing moisture and losing its R-value. Before we spray foam, we assess where the moisture is coming from. If the crawl space has standing water or a major leak, that has to be fixed first or we do not spray. If the moisture is from humid outdoor air entering through foundation vents, closed-cell spray foam on the rim board, band joist, and foundation wall will seal those air leaks and stop the condensation. We then insulate the crawl space with foam that resists moisture and will not fail. Call (336) 608-5235 to discuss what you are seeing.

What does spray foam cost for a finished room over my garage in Kernersville?

A finished room over the garage typically has vaulted or cathedral ceilings with no attic space above, so the insulation has to go between the rafters or in the rafter cavity itself. The cost depends on the area of the ceiling (in square feet), the R-value required by code for your address, and whether the roof deck is currently insulated or bare. Open-cell foam runs from $0.55 per board foot and works well if the roof is dry and the goal is air sealing and comfort. Closed-cell foam runs from $1.20 per board foot and is the better choice if the roof has any history of leaks or if you need the highest R-value in a tight space. A typical 300-square-foot ceiling might range from $1,800 to $3,000 depending on the foam type and thickness. Call us at (336) 608-5235 for a free on-site estimate, and bring a copy of your address so we can check what R-value the local code requires.

What R-value does Kernersville require for attic insulation, and who inspects it?

The R-value required for attic insulation in Kernersville depends on the energy code adopted by your local building department and the date your home was built or last permitted. The City of Kernersville and the local building official govern the energy code and the inspection requirements for your address. We recommend checking the City of Kernersville website or calling the building department to confirm what code applies to your property and what R-value is required. When we provide your estimate, we will specify the R-value and thickness we recommend based on the code that applies at your address and the condition of your attic. The code also governs the thermal barrier (a fire-rated material between the foam and the living space) and the ignition barrier, and we follow those rules exactly. The building official inspects the finished work to confirm it meets code.

Can we stay in the house while you spray foam in the attic? What about the smell?

Yes, you can stay in the house during the job. We set up mechanical ventilation in the attic during the spray and cure to control the odor and off-gassing. The smell is strongest during the first 24 to 48 hours while the foam cures, and it will be noticeable if you go into the attic or if air returns pull air from the attic into the living space. We recommend closing attic access doors and keeping the house well-ventilated with open windows if the weather allows. The smell dissipates completely as the foam cures, and the attic is safe to enter after 24 to 48 hours. If you are sensitive to odors or if the attic is directly above a bedroom, we can schedule the work for a time when you can open windows and run fans to move the air out of the house. Call us at (336) 608-5235 to discuss timing and ventilation options for your home.

Are you fully insured and bonded for spray foam work in Kernersville?

Yes, we are fully insured with general liability and workers' compensation coverage. Our team carries the insurance you need to know we can cover any accidental damage to your property or injury to our crew during the job. When you call for an estimate, we are happy to provide proof of insurance. You can also verify any contractor's insurance coverage by asking for a certificate of insurance before work begins. Call us at (336) 608-5235.

When is the best time to have spray foam insulation installed in Kernersville?

We work year-round in Kernersville, but timing depends on your situation. If you have a moisture or condensation problem in the attic or crawl space, the sooner you address it the better, because damp insulation loses R-value and can lead to mold or wood rot. If you are planning an attic or garage project, fall and early winter are good times because the attic is cooler and more comfortable to work in, and you will feel the benefit of better insulation as heating season arrives. If your cooling bills are too high in summer, spring is the ideal time to have the work done so you save money as soon as the heat arrives. Call us at (336) 608-5235 to discuss your situation and find a time that works for you.