Insulation in Marietta, GA
Spray foam insulation in Marietta runs $1.70-$4.20 per board foot depending on foam type and depth, and most homes here need air sealing first because the ranch and split-level housing stock built during the Lockheed worker boom was never airtight to begin with. Marietta sits in IECC Climate Zone 3A, so insulation has to work in both directions: attics hit 150°F in July while winter cold snaps drop into the teens. Call (218) 261-7714 for a written price before any work starts.
Why Marietta Homes Are Different
The post-WWII housing wave driven by the Bell Aircraft and Lockheed plant at what is now Dobbins Air Reserve Base left east and north Marietta with thousands of nearly identical ranch and split-level homes built fast for plant workers between the late 1940s and the 1970s. These homes share a fingerprint: 2-3 inches of settled attic insulation reading under R-11, unencapsulated vented crawl spaces, and zero insulation in 2×4 exterior wall cavities. Georgia’s mixed-humid climate compounds every one of those failures. Fiberglass batts stapled between floor joists sag, absorb ground moisture, and lose R-value within a few years. In the ranch neighborhoods east of Marietta Square and around Dobbins, crews see the same template job repeatedly: blown rock wool compressed flat, batts lying on crawl space dirt, and rim joists with no insulation at all. Contractors who know these neighborhoods can pre-quote the scope before they even pull the attic hatch.
Our Main Marietta Services
Attic insulation and crawl space encapsulation are the two calls Marietta homeowners make most, and both jobs start the same way: seal the air leaks, then insulate.
Attic Insulation in Marietta
Most Marietta attics we open have blown fiberglass or rock wool settled to under R-11, far below the R-38 to R-49 that Zone 3A demands. We seal top plates, can lights, and penetrations first, then blow fresh insulation to the full depth. The full scope lives on Attic Insulation in Marietta.
Crawl Space Encapsulation & Vapor Barrier in Marietta
Older Marietta crawl spaces sit on Georgia red clay with vented foundation walls, which pulls humid outside air into the home all summer. We seal the vents, lay a vapor barrier, and insulate the perimeter walls instead of the floor joists. Details are on Crawl Space Encapsulation & Vapor Barrier in Marietta.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Spray Foam Insulation in Marietta
Spray foam in Marietta is the most effective answer for the ranch-home wall cavities and vented attics that dominate east Marietta’s housing stock. Closed-cell foam adds structural shear and a vapor barrier in one pass, which matters when Georgia humidity pushes moisture into every unsealed assembly. We use open-cell for attic roof decks where the goal is air sealing plus thermal resistance inside the existing frame, and closed-cell for rim joists and crawl space walls that need moisture control. See the full scope on our Spray Foam Insulation page.
Open-Cell Spray Foam
Signs you need it
Upstairs rooms run 8-10°F warmer than the rest of the house in summer even with attic insulation present.
What it costs in Marietta
Open-cell foam in Marietta attics runs $1.70-$2.50 per board foot depending on depth and access.
How we do it
We seal penetrations, mask off the attic entry, spray roof deck cavities to the specified depth, then record the post-spray blower-door number.
Closed-Cell Spray Foam
Signs you need it
Rim joists show damp wood or condensation, or the crawl space smells musty year-round.
What it costs in Marietta
Closed-cell foam in Marietta runs $3.50-$4.20 per board foot for rim joists and crawl space walls.
How we do it
We clean the surface, apply foam to the specified thickness, then photograph the finished assembly for the customer record.
What Spray Foam Insulation Costs in Marietta
| Item | Typical range in Marietta |
|---|---|
| Open-cell, attic roof deck | $1.70-$2.50 per board foot |
| Closed-cell, rim joist | $3.50-$4.20 per board foot |
| Closed-cell, crawl space wall | $3.50-$4.20 per board foot |
Does spray foam work in older Marietta ranch homes?
Yes. It performs well in the uninsulated 2×4 exterior wall cavities common in 1950s-1970s ranch homes, where closed-cell foam gets the most R-value per inch.
How long does spray foam last in Marietta’s heat and humidity?
Properly applied spray foam does not settle, sag, or absorb moisture, so it holds its R-value for the life of the home.
Blown-In Insulation in Marietta
Blown-in insulation is the most common retrofit we do in Marietta because the Lockheed-era housing stock settled its original attic insulation to under R-11 decades ago. Blown-in cellulose or fiberglass tops that existing layer back up to R-38 or better once we seal the air leaks below it. See the full scope on our Blown-In Insulation page.
Blown-In Cellulose
Signs you need it
Attic insulation measures under 6 inches deep and the upstairs runs hot all summer.
What it costs in Marietta
Blown-in cellulose in Marietta runs $1.40-$1.80 per square foot for a full R-38 attic job.
How we do it
We air seal first, mark target depth, then blow cellulose to the specified R-value and photograph the finished depth.
Blown-In Fiberglass
Signs you need it
Existing fiberglass batts are compressed, darkened, or scattered, and thermal imaging shows uneven coverage.
What it costs in Marietta
Blown-in fiberglass in Marietta runs $1.50-$2.00 per square foot for an R-38 attic.
How we do it
We remove or level the old material, seal the floor, then blow fiberglass to the target depth and record the final R-value.
What Blown-In Insulation Costs in Marietta
| Item | Typical range in Marietta |
|---|---|
| Blown-in cellulose, full attic | $1.40-$1.80 per sq ft |
| Blown-in fiberglass, full attic | $1.50-$2.00 per sq ft |
| Blown-in top-up over existing | $0.80-$1.20 per sq ft |
How much blown-in insulation does a Marietta ranch home need?
Homes in Zone 3A need R-38 to R-49 in the attic. Most Lockheed-era ranches need 10-14 additional inches of blown-in material.
Is blown-in insulation better than batts for older attics?
Yes, because it fills irregular joist bays and settles into the spaces batts miss, which matters in uneven older attics.
Radiant Barrier Installation in Marietta
Radiant barrier in Marietta targets the single biggest summer heat load: attic temperatures above 150°F radiating down through the ceiling. Homes in east Marietta’s ranch neighborhoods run their A/C constantly from May through September, and a radiant barrier cuts that attic heat gain measurably before it reaches the living space. See the full scope on our Radiant Barrier Installation page.
Attic Radiant Barrier
Signs you need it
Attic temperature stays above 140°F through most of July and August even with ventilation.
What it costs in Marietta
Radiant barrier in Marietta attics runs $0.85-$1.40 per square foot installed.
How we do it
We staple the barrier to the underside of the rafters, maintain a vent gap, and photograph the coverage before we leave.
Radiant Barrier & Ventilation
Signs you need it
Attic has limited venting and the upstairs ceiling is hot to the touch in the afternoon.
What it costs in Marietta
Radiant barrier with ventilation correction in Marietta runs $1.10-$1.70 per square foot.
How we do it
We inspect existing venting, install the barrier, then balance intake and exhaust so stale heat can actually leave the attic.
What Radiant Barrier Installation Costs in Marietta
| Item | Typical range in Marietta |
|---|---|
| Attic radiant barrier, standard install | $0.85-$1.40 per sq ft |
| Radiant barrier & ventilation correction | $1.10-$1.70 per sq ft |
| Radiant barrier roof deck prep | $1.00-$1.50 per sq ft |
Does radiant barrier replace insulation in a Marietta attic?
No. It reduces radiant heat gain but adds almost no R-value, so it works with insulation, not instead of it.
Will radiant barrier lower my A/C bill in Marietta?
It typically cuts ceiling heat gain by 20-30%, which reduces A/C runtime in Georgia’s long cooling season.
Insulation Removal & Replacement in Marietta
Insulation removal and replacement in Marietta is most common after roof leaks, rodent damage, or decades of compaction in Lockheed-era attics. Contaminated insulation holds mold spores and rodent droppings, and it must come out before anything new goes in. See the full scope on our Insulation Removal & Replacement page.
Attic Insulation Removal
Signs you need it
Existing insulation is matted, damp, or has settled below R-11 and no longer covers the joists.
What it costs in Marietta
Attic insulation removal in Marietta runs $1.50-$2.50 per square foot depending on depth and access.
How we do it
We vacuum out old material with commercial extraction, bag it, then seal and prep the floor for new insulation.
Contaminated Insulation Removal
Signs you need it
Insulation shows rodent droppings, mold staining, or a persistent odor from the attic.
What it costs in Marietta
Contaminated removal in Marietta runs $2.00-$3.00 per square foot including sanitizing.
How we do it
We remove contaminated material under negative pressure, sanitize the deck, then document the clean surface before replacement.
What Insulation Removal & Replacement Costs in Marietta
| Item | Typical range in Marietta |
|---|---|
| Attic insulation removal | $1.50-$2.50 per sq ft |
| Contaminated removal & sanitizing | $2.00-$3.00 per sq ft |
| Replacement blown-in after removal | $1.40-$2.00 per sq ft |
How do I know if my Marietta attic insulation needs to be removed?
If it is wet, compressed below R-11, or shows rodent activity, removal is usually cheaper and healthier than topping over it.
Can you remove insulation the same day in Marietta?
Most single-story ranch attics take one day to extract and prep. Call (218) 261-7714 for a written schedule and price.
Attic Air Sealing in Marietta
Attic air sealing in Marietta is the prerequisite job most older homes never got. Lockheed-era ranches leak conditioned air through top plates, can lights, and chase gaps, and that leakage pulls humid Georgia air into the attic all summer. We seal first, then insulate, and we record the before-and-after blower-door numbers so you can see the change. See the full scope on our Attic Air Sealing page.
Attic Floor Air Sealing
Signs you need it
Dust streaks on fiberglass batts or visible gaps around partition framing and plumbing chases.
What it costs in Marietta
Attic floor air sealing in Marietta runs $0.90-$1.50 per square foot of attic floor.
How we do it
We pull back existing insulation, seal every penetration with foam and caulk, then re-lay or top up the insulation.
Top Plate & Penetration Sealing
Signs you need it
Interior walls show drafts in winter, or a blower-door test reads above 3,000 CFM50 in a 1,400 sq ft ranch.
What it costs in Marietta
Top plate sealing in Marietta runs $1.00-$1.60 per linear foot of top plate.
How we do it
We seal the drywall-to-plate junction with foam, then seal wire and pipe penetrations and photograph the completed passes.
What Attic Air Sealing Costs in Marietta
| Item | Typical range in Marietta |
|---|---|
| Attic floor air sealing | $0.90-$1.50 per sq ft |
| Top plate sealing | $1.00-$1.60 per linear ft |
| Combined sealing & verify blower-door | $1.40-$2.10 per sq ft |
Does air sealing really matter before adding attic insulation in Marietta?
Yes. Blowing insulation over an unsealed attic floor leaves the biggest leakage paths open, and you lose 20-30% of the insulation’s performance.
Do you publish before-and-after blower-door numbers on every Marietta air sealing job?
Yes. Every applicable job gets a written pressurization reading before and after so you can verify the air-sealing result.
Wall Insulation in Marietta
Wall insulation in Marietta addresses the single biggest gap in Lockheed-era housing: 2×4 exterior wall cavities built before Georgia energy codes required any insulation at all. Those empty cavities let outside heat and humidity move straight through the wall assembly, which is why rooms in east Marietta ranches heat up by mid-afternoon. See the full scope on our Wall Insulation page.
Injection Foam Wall Insulation
Signs you need it
Exterior walls feel warm to the touch in summer or show temperature banding on thermal imaging.
What it costs in Marietta
Injection foam in Marietta runs $2.00-$3.00 per square foot of wall area.
How we do it
We drill small access holes, inject foam into existing cavities, then patch and photograph the completed wall.
Drill & Fill Wall Insulation
Signs you need it
Rooms along exterior walls are 5-8°F warmer than interior rooms in summer.
What it costs in Marietta
Drill and fill insulation in Marietta runs $2.20-$3.30 per square foot of wall area.
How we do it
We drill from the exterior or interior, blow dense-pack cellulose into the cavities, then seal and repaint the access points.
What Wall Insulation Costs in Marietta
| Item | Typical range in Marietta |
|---|---|
| Injection foam wall insulation | $2.00-$3.00 per sq ft |
| Drill & fill cellulose | $2.20-$3.30 per sq ft |
| Interior wall soundproofing | $1.50-$2.50 per sq ft |
How do you insulate walls without removing drywall in Marietta?
We inject foam or dense-pack cellulose through small access holes, which means no full drywall removal and minimal patching.
Does wall insulation work in old Marietta brick-front homes?
Yes. The 1980s and 1990s brick-front subdivisions have the same uninsulated 2×4 cavity issue behind the brick veneer.
Attic Cleaning & Rodent Proofing in Marietta
Attic cleaning and rodent proofing in Marietta starts with the fact that rats and squirrels follow the same air leaks we seal. Lockheed-era ranch homes have dozens of roof and eave penetrations that rodents use as entry points, and once they are in, they contaminate the insulation and chew wiring. We clean, seal, and leave a documented record of every entry point closed. See the full scope on our Attic Cleaning & Rodent Proofing page.
Attic Cleanout
Signs you need it
Droppings, nesting material, or damaged insulation visible in the attic.
What it costs in Marietta
Attic cleanout in Marietta runs $1.50-$2.50 per square foot depending on condition.
How we do it
We remove contaminated material, vacuum the deck, then photograph the clean surface for the customer record.
Rodent Proofing & Exclusion
Signs you need it
Scratching noises at night or new droppings after cleaning.
What it costs in Marietta
Rodent exclusion in Marietta runs $2.00-$3.50 per linear foot of sealed eave, gable, or soffit edge.
How we do it
We seal every penetration with metal mesh and foam, then document each closed entry point with photos.
What Attic Cleaning & Rodent Proofing Costs in Marietta
| Item | Typical range in Marietta |
|---|---|
| Attic cleanout | $1.50-$2.50 per sq ft |
| Rodent exclusion sealing | $2.00-$3.50 per linear ft |
| Sanitizing & decontamination | $1.00-$1.80 per sq ft |
Do you handle rodent removal or just proofing in Marietta?
We handle exclusion and proofing, meaning we seal the entry points so animals cannot return. Removal and trapping is a separate pest-control service.
Will rodent proofing also help my insulation in Marietta?
Yes. Sealing entry points keeps animals out of the insulation, and the sealing work also closes air leaks that weaken the building envelope.
Home Energy Audit in Marietta
A home energy audit in Marietta gives you the numbers before you spend a dime on insulation. We test with a blower door and thermal imaging to find where your specific home leaks, then write a prioritized scope with prices on the page. That beats guessing, especially in the repetitive ranch-home stock where every house shares the same deficiencies but the fixes differ by orientation, roof, and crawl space. See the full scope on our Home Energy Audit page.
Blower Door Test
Signs you need it
High utility bills, drafty rooms, or you want to verify air sealing after a retrofit.
What it costs in Marietta
A standalone blower door test in Marietta runs $250-$400 depending on home size.
How we do it
We mount the fan, pressurize the house, record CFM50, then walk the home finding the leaks with a pressure gauge.
Thermal Imaging Inspection
Signs you need it
Rooms run noticeably different temperatures, or you suspect missing insulation in specific walls.
What it costs in Marietta
Thermal imaging in Marietta runs $200-$350 when done as a standalone service.
How we do it
We scan interior and exterior surfaces with an infrared camera while the house is pressurized, then map the findings.
What Home Energy Audit Costs in Marietta
| Item | Typical range in Marietta |
|---|---|
| Blower door test | $250-$400 |
| Thermal imaging inspection | $200-$350 |
| Insulation inspection with report | $150-$300 |
Does a Marietta home energy audit include a written report?
Yes. You walk away with a written scope, prioritized by payback, with the blower-door and thermal imaging numbers attached.
Can you do a blower door test before I buy an older Marietta home?
Yes. We test during inspection periods and the report reads as a documented record, useful for negotiation or planning retrofit work.
Brands We Service in Marietta
We install Johns Manville, Knauf, and CertainTeed insulation systems, with material stocked locally for most Marietta jobs. When a manufacturer-specific warranty or match is needed, see our brands for the full list.
Pricing for Insulation in Marietta, GA
| Service | Typical range in Marietta |
|---|---|
| Blown-in cellulose, full attic | $1.40-$1.80 per sq ft |
| Blown-in fiberglass, full attic | $1.50-$2.00 per sq ft |
| Open-cell spray foam, roof deck | $1.70-$2.50 per board foot |
| Closed-cell spray foam, rim joist | $3.50-$4.20 per board foot |
| Radiant barrier, standard install | $0.85-$1.40 per sq ft |
| Attic insulation removal | $1.50-$2.50 per sq ft |
| Attic floor air sealing | $0.90-$1.50 per sq ft |
| Injection foam wall insulation | $2.00-$3.00 per sq ft |
| Attic cleanout | $1.50-$2.50 per sq ft |
| Blower door test | $250-$400 |
What pushes price up in Marietta is mostly access: steep roof pitches, small attic hatches, and crawl spaces with limited clearance all add labor hours. Every job gets a written price before work starts, so the number you approve is the number you pay.
Neighborhoods We Serve in Marietta
We work all of Marietta, from the Square out to the Cobb County line. Typical scheduling runs 2-5 business days after a written estimate is approved.
- Marietta Square and the antebellum-era surrounding streets
- East Marietta ranch neighborhoods around Dobbins Air Reserve Base
- North Marietta split-level and Cape Cod tracts
- West Marietta and the Powder Springs Road corridor
- Brick-front subdivisions along Sandy Plains Road and Canton Road
Service Area - Cities Near Marietta
Our crews dispatch to Marietta from the Atlanta office, and we also run scheduled routes through Smyrna, GA, Atlanta, GA, Roswell, GA, and Alpharetta, GA. If you are on the Cobb-Fulton line, call (218) 261-7714 and we will confirm which route covers your street.
Serving Marietta, GA - Our Local Coverage Area
We’re based in the Marietta area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Insulation in Marietta
Most Marietta jobs are scheduled within 2-5 business days after the written estimate is approved. Emergency calls are answered by a live person 24/7 at (218) 261-7714.
Most insulation retrofits do not require a city permit in Marietta, but spray foam on a roof deck can trigger a building inspector review. We confirm permit requirements before scheduling.
You get a written scope, a Documented Photo Record of the completed work, and on applicable jobs the before-and-after blower-door readings showing the air-sealing change.
What happens when you call
- 1A real person answersNo phone trees - talk to a local insulation pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3A background-checked tech heads outLicensed & insured, typically within 1-hour.
- 4You approve before work beginsNothing starts until you say go.
What Marietta Customers Say
"Fixed price, clean work, and they hauled the old material away as agreed."
- Todd M."They photographed rodent damage in the old insulation that we had no idea about, and priced the exclusion work separately so we could decide."
- Harriet N."They air-sealed the attic floor before insulating and showed me the blower-door number before and after. The upstairs is finally the same temperature as downstairs."
- Marisol D.