Insulation in Marietta, GA
Marietta homeowners call us most often about crawl space encapsulation, because the city’s 1950s-1970s brick ranches and split-levels were built with vented dirt-floor crawl spaces that pull humid Georgia air straight into the house. Those same homes almost always have attics that started with R-11 fiberglass batts and have settled to R-6 or less, so spray foam, blown-in, and air sealing jobs are constant here too. If your energy bills climb every summer while upstairs rooms stay hot, call (855) 657-3403 and a live person answers 24/7.
Why Marietta Homes Are Different
Marietta sits in IECC Climate Zone 3A, hot-humid, where summer attic temperatures routinely push past 150°F and outdoor dew points stay above 70°F for months. That combination makes vapor management and air sealing just as important as R-value, and it punishes any home with gaps between conditioned space and the attic or crawl space. Older brick ranches along Roswell Road and in the Murdock Road area almost always show the same pattern: vented crawl spaces with missing belly insulation, no vapor barrier, and humid outdoor air migrating into the living space. East Cobb’s 1980s-1990s builder-grade two-stories fare only slightly better, with rim joists and attic floors that were under-insulated before Georgia adopted the International Energy Conservation Code. Homes built during the Lockheed-Georgia Company boom were framed fast, insulated minimally, and sealed almost not at all. That’s the retrofit concentration we see across Marietta every week.
Our Main Marietta Services
Two services dominate the calls we get from Marietta homeowners: attic insulation for the heat and bills, and crawl space work for the humidity and comfort problems. Here’s what each looks like in this city.
Attic Insulation in Marietta
Marietta’s post-war ranches and split-levels typically have attics with fiberglass batts that have compressed, shifted, or been trampled flat by decades of storage, HVAC service, and cable installs. When we measure settled R-6 in an attic that should be R-38 or better, we know the upstairs bedrooms will never hold a set temperature in July. The fix in most Marietta homes is air sealing first, then blown-in fiberglass or cellulose to code. For the full scope, read our Attic Insulation in Marietta page.
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.
Crawl Space Encapsulation & Vapor Barrier in Marietta
Crawl space encapsulation in Marietta is the highest-impact upgrade a 1950s-1970s ranch or split-level can get, because those vented dirt-floor crawl spaces are pulling humid Georgia air into the house all spring and summer. That moisture condenses on ductwork, feeds mold on framing, and makes floors feel damp even when the air conditioning runs. Our full Crawl Space Encapsulation & Vapor Barrier process seals the floor, walls, and vents so the air under your house stops acting like an outdoor humidifier.
Crawl Space Vapor Barrier
Signs you need it
You smell musty air in the house, see condensation on ducts or floor joists, or notice hardwood floors cupping on humid days.
What it costs in Marietta
A crawl space vapor barrier in Marietta typically runs $1,200-$3,000 depending on square footage and access.
How we do it
We lay a reinforced poly liner across the floor, run it up the walls, and mechanically fasten it at the top. Seams get taped and sealed, and we wrap piers so nothing damp stays exposed.
Crawl Space Insulation
Signs you need it
Floors over the crawl space are cold in winter, pipes are exposed to freezing air, or the previous fiberglass has fallen out of the joist bays.
What it costs in Marietta
Crawl space insulation in Marietta typically falls between $1.50 and $3.00 per square foot for new installation.
How we do it
After the crawl space is dry, we fit rigid foam board or closed-cell spray foam to the perimeter walls and rim joists. That approach outperforms floor-batt insulation in a hot-humid climate because it brings the crawl space inside the home’s thermal envelope.
What Crawl Space Encapsulation & Vapor Barrier Costs in Marietta
| Item | Typical range in Marietta |
|---|---|
| Crawl space vapor barrier | $1,200-$3,000 |
| Full crawl space encapsulation | $5,000-$15,000 |
| Crawl space insulation | $1.50-$3.00 per sq ft |
| Crawl space moisture control (dehumidifier, grading, drainage) | $2,000-$4,500 |
Do I need encapsulation or just a vapor barrier in Marietta?
If your crawl space is purely a moisture source, a vapor barrier solves it. If the house smells musty, floors feel damp, or ducts sweat, full encapsulation and sealing is the long-term fix. We assess both and quote what’s actually needed.
Will crawl space encapsulation make my Marietta house smell better?
Yes, almost always. Once the dirt floor is sealed and humid air stops entering, the musty odor fades within days. Pairing encapsulation with air sealing in the floor above removes the path the smell used to travel. Call (855) 657-3403 to schedule a look.
Spray Foam Insulation in Marietta
Spray foam insulation in Marietta does two jobs at once: it insulates and it air-seals, which makes it the right call for older brick ranches where attic floor gaps and wall cavities leak conditioned air constantly. Closed-cell foam also blocks moisture, and that matters here where summer dew points above 70°F test every building assembly. Our Spray Foam Insulation installations using Icynene, Demilec, and Johns Manville products are cut to fit the specific framing you have.
Closed-Cell Spray Foam
Signs you need it
You want maximum R-value per inch, need a vapor barrier, or have a rim joist and band board that leaks air and humidity.
What it costs in Marietta
Closed-cell spray foam in Marietta typically costs $2.00-$4.50 per board foot installed.
How we do it
We prep the area for application, then spray a continuous layer that expands to fill every void. The foam cures into a rigid, airtight barrier that adds structural strength and blocks moisture at the source.
Rim Joist Spray Foam
Signs you need it
Basement or crawl space rim joists feel cold in winter, you see daylight at the band board, or you keep finding insect and rodent entry points there.
What it costs in Marietta
Rim joist spray foam in Marietta runs $300-$900 for a typical single-story perimeter.
How we do it
We spray closed-cell foam directly onto the rim board from the inside, sealing the entire perimeter in one pass. This stops the stack effect that pulls outside air through the band board and up through the house.
What Spray Foam Insulation Costs in Marietta
| Item | Typical range in Marietta |
|---|---|
| Closed-cell spray foam | $2.00-$4.50 per board ft |
| Open-cell spray foam | $0.50-$1.50 per board ft |
| Rim joist spray foam | $300-$900 per perimeter |
| Garage ceiling spray foam | $1,500-$3,500 per ceiling |
Is closed-cell foam worth the premium in Marietta’s climate?
For rim joists, crawl space walls, and metal roof decks, yes. Closed-cell foam resists moisture and adds more R-value per inch, which pays off fastest in a hot-humid zone where air leaks and vapor drive never stop.
How long does spray foam last in a Marietta attic?
Spray foam insulation typically lasts the life of the structure when installed correctly and kept dry. We back every spray foam job with our 90-Day Done Right Promise, and call (855) 657-3403 for a free estimate.
Blown-In Insulation in Marietta
Blown-in insulation is the most common retrofit we do in Marietta attics, because it’s the fastest way to get a settled R-6 fiberglass batt attic up to R-38 or R-49 without ripping out the old material. In older ranches and split-levels where attic access is tight and framing is irregular, blown-in fiberglass or cellulose fills around every joist and brace. Read more on our Blown-In Insulation approach with Owens Corning and GreenFiber products.
Blown-In Fiberglass
Signs you need it
Attic insulation measures under 10 inches deep, upstairs rooms swing hot and cold, or your energy bills keep climbing year over year.
What it costs in Marietta
Blown-in fiberglass in Marietta typically runs $1.50-$4.00 per square foot installed.
How we do it
We air-seal the attic floor first, then blow loose-fill fiberglass to the target depth and density across the whole attic. A depth marker check verifies R-value before we leave.
Blown-In Cellulose
Signs you need it
You want a dense, sound-absorbing retrofit material made largely from recycled paper, or your existing attic insulation has settled unevenly.
What it costs in Marietta
Blown-in cellulose in Marietta typically costs $1.50-$4.00 per square foot installed.
How we do it
We blow GreenFiber cellulose to the specified depth, paying close attention to eaves and corners where heat loss concentrates. The material’s density also reduces air movement through the attic floor.
What Blown-In Insulation Costs in Marietta
| Item | Typical range in Marietta |
|---|---|
| Blown-in fiberglass | $1.50-$4.00 per sq ft |
| Blown-in cellulose | $1.50-$4.00 per sq ft |
| Blown-in top-up (over existing) | $1,500-$4,500 per attic |
| Dense-pack wall insulation | $2.50-$5.00 per sq ft |
Can you blow insulation over my old settled batts in Marietta?
Yes, in most attics. We inspect for moisture, rodent damage, and mold first, then blow new material directly over the old. The result is a continuous layer that meets current R-38 or R-49 standards without a full removal. Call (855) 657-3403 for an inspection.
How thick should blown-in attic insulation be in Marietta?
For IECC Climate Zone 3A, R-38 to R-49 is the target, which works out to roughly 12-18 inches of loose-fill fiberglass. We measure settled depth, not fluffed depth, so the R-value is real.
Radiant Barrier Installation in Marietta
Radiant barrier installation in Marietta cuts the heat load on attic insulation by reflecting radiant heat before it ever reaches the living space, which matters when summer attic temperatures exceed 150°F. It’s a smart pairing with blown-in or spray foam in older ranches where the roof deck bakes all afternoon. Our Radiant Barrier Installation work uses perforated foil that holds up in a humid Georgia attic.
Attic Radiant Barrier
Signs you need it
Your air conditioner runs almost nonstop from June through September, or upstairs ceilings feel warm to the touch late in the day.
What it costs in Marietta
An attic radiant barrier in Marietta typically costs $1,500-$4,000 depending on roof square footage and access.
How we do it
We staple perforated radiant barrier foil to the underside of the roof rafters, leaving ventilation gaps at the eaves and ridge. The foil reflects radiant heat away from the attic floor.
Radiant Barrier & Ventilation
Signs you need it
Attic has single-gable vents or soffit vents painted over, and heat or humidity builds up even after adding insulation.
What it costs in Marietta
Radiant barrier plus ventilation upgrades in Marietta typically add $500-$1,500 beyond the barrier-only price.
How we do it
We confirm intake and exhaust vent area first, then install the barrier so it doesn’t choke airflow. In Marietta’s hot-humid climate, a radiant barrier needs moving air above it to do its job.
What Radiant Barrier Installation Costs in Marietta
| Item | Typical range in Marietta |
|---|---|
| Attic radiant barrier | $1,500-$4,000 |
| Radiant barrier foil (materials) | $0.30-$0.80 per sq ft |
| Radiant barrier roof deck | $800-$2,500 |
| Radiant barrier & ventilation | $500-$1,500 add-on |
Does a radiant barrier help in the winter in Marietta?
It helps modestly by reducing downward heat loss at night, but the real savings come in summer. Paired with R-38 attic insulation, a radiant barrier typically makes the upstairs noticeably cooler during peak heat.
Will a radiant barrier damage my Marietta roof?
No, installed correctly. We use perforated foil so moisture doesn’t trap against the roof deck, and leave proper ventilation, which is standard practice in a humid climate like ours. Call (855) 657-3403 to see your attic.
Insulation Removal & Replacement in Marietta
Insulation removal and replacement in Marietta is the right call when old fiberglass batts have been soaked by roof leaks, packed down by decades of foot traffic, or contaminated by rodents, all common in 50-to-70-year-old ranches and split-levels. Once the old material is out, we can air-seal the attic floor properly. Our Insulation Removal & Replacement crews handle the whole job, including bagging and disposal.
Attic Insulation Removal
Signs you need it
Insulation is matted flat, black with dust, or holding moisture, and the attic smells stale even on dry days.
What it costs in Marietta
Attic insulation removal in Marietta typically runs $1.50-$3.00 per square foot.
How we do it
We vacuum out the old material using a commercial insulation removal machine, bag it on site, and haul it away. The attic is left ready for new insulation and air sealing.
Contaminated Insulation Removal
Signs you need it
You find rodent droppings, nesting material, or mold on the insulation, or a roof leak soaked through and the material never dried.
What it costs in Marietta
Contaminated insulation removal in Marietta typically adds $500-$1,500 to standard removal because of containment and sanitation steps.
How we do it
We contain the work area, remove contaminated material in sealed bags, then sanitize surfaces before installing anything new. This is not a job to shortcut in a hot-humid climate where mold takes hold fast.
What Insulation Removal & Replacement Costs in Marietta
| Item | Typical range in Marietta |
|---|---|
| Attic insulation removal | $1.50-$3.00 per sq ft |
| Contaminated insulation removal | $500-$1,500 add-on |
| Full removal & replacement | $3,500-$8,000 per attic |
| Vermiculite & old insulation removal | $4,000-$12,000 |
Can you replace my insulation the same day in Marietta?
In most attics, yes. Removal in the morning, air sealing and new blown-in insulation in the afternoon, and you’re done by evening. Most of our removal and replacement jobs in Marietta are completed in a single visit.
Is it cheaper to just add new insulation over the old?
Sometimes, but not when the old material is wet, moldy, or full of rodent waste. A contaminated layer under new insulation keeps smelling and keeps harboring problems, so removal pays for itself over time. Call (855) 657-3403 for a straight answer after an attic look.
Attic Air Sealing in Marietta
Attic air sealing in Marietta stops the stack effect that pulls hot, humid outdoor air through the ceiling, wall top plates, and around recessed lights in older brick ranches and split-levels. Sealing first makes every dollar you spend on new insulation actually perform, because insulation alone can’t stop air movement. Our Attic Air Sealing process targets every penetration before new material goes down.
Attic Floor Air Sealing
Signs you need it
You feel drafts near interior walls in winter, see dirty fiberglass around light fixtures, or find attic dust collecting on ceiling registers.
What it costs in Marietta
Attic floor air sealing in Marietta typically runs $800-$2,500 for a full attic.
How we do it
We seal top plates, chases, plumbing penetrations, and flues with foam and caulk rated for high heat where needed. Then we check every seam before insulation goes back.
Can Light & Duct Boot Sealing
Signs you need it
Recessed lights feel warm to the touch in summer, or conditioned air leaks out around ceiling registers into the attic.
What it costs in Marietta
Can light and duct boot sealing in Marietta typically costs $100-$400 per fixture or register.
How we do it
We install rated covers over non-IC-rated cans and seal duct boots to the drywall with mastic and foam. That closes the two most common attic air leaks in 1980s-1990s East Cobb builder-grade homes.
What Attic Air Sealing Costs in Marietta
| Item | Typical range in Marietta |
|---|---|
| Attic floor air sealing | $800-$2,500 |
| Top plate & penetration sealing | $400-$1,200 |
| Can light & duct boot sealing | $100-$400 per fixture |
| Attic hatch sealing | $100-$300 |
Do I need air sealing or just more insulation in Marietta?
Both, almost always. Insulation slows heat transfer; air sealing stops the actual leakage. In a hot-humid climate, skipped air sealing means humid outdoor air filters through the insulation and undoes some of the R-value you paid for.
How fast will I notice a difference after attic air sealing?
Most Marietta homeowners feel the difference within a day or two, especially in upstairs rooms. The house holds set temperature longer and the AC doesn’t cycle as often. Call (855) 657-3403 to schedule an attic inspection.
Wall Insulation in Marietta
Wall insulation in Marietta tackles a specific problem: the 1950s-1970s brick ranches and split-levels built during the Lockheed-Georgia boom frequently have empty wall cavities, because energy codes didn’t require insulation then. That leaves whole rooms fighting outdoor temperatures on two or three sides. Our Wall Insulation retrofits use injection and drill-and-fill methods that fit finished walls.
Injection Foam Wall Insulation
Signs you need it
Rooms on exterior walls stay cold in winter and warm in summer, or you can feel temperature stripes on the drywall.
What it costs in Marietta
Injection foam wall insulation in Marietta typically runs $2.50-$6.00 per square foot of wall area.
How we do it
We drill small holes through the exterior or interior finish, inject slow-rise foam that fills the cavity from bottom to top, and patch the holes. The house looks the same when we leave.
Dense-Pack Wall Insulation
Signs you need it
Your walls are empty or partially filled, and you’d rather use a cellulose or fiberglass material than foam.
What it costs in Marietta
Dense-pack wall insulation in Marietta typically costs $2.50-$5.00 per square foot installed.
How we do it
We blow loose-fill material into the cavity under pressure until it holds firm, which resists settling and blocks air movement. It’s the standard retrofit for older Marietta wall cavities.
What Wall Insulation Costs in Marietta
| Item | Typical range in Marietta |
|---|---|
| Injection foam wall insulation | $2.50-$6.00 per sq ft |
| Drill & fill wall insulation | $2.50-$5.00 per sq ft |
| Exterior wall insulation | $4.00-$8.00 per sq ft |
| Interior wall soundproofing | $2.00-$4.00 per sq ft |
Can you insulate my older Marietta brick ranch walls without tearing out drywall?
Yes, injection foam and dense-pack both go in through small holes that we patch afterward. Your walls stay intact, and the house gains a thermal barrier it never had.
How do I know if my Marietta walls are empty?
A thermal imaging scan shows empty cavities within minutes. We run that during a home energy audit, then recommend whether injection foam or dense-pack makes sense. Call (855) 657-3403 to schedule an inspection.
Attic Cleaning & Rodent Proofing in Marietta
Attic cleaning and rodent proofing in Marietta handles what happens when squirrels, rats, and mice turn a 1950s ranch’s roof overhangs and gable vents into a highway. Older homes around Roswell Road and the Murdock Road area are especially prone because decades of settle and trim gaps leave openings that never get closed. Our Attic Cleaning & Rodent Proofing crews remove the damage and seal the entry points for good.
Attic Cleanout
Signs you need it
You see droppings, nesting material, chewed ducting, or old insulation that’s been trampled and soiled.
What it costs in Marietta
An attic cleanout in Marietta typically runs $500-$2,500 depending on attic size and contamination level.
How we do it
We remove contaminated insulation, bag all waste, and vacuum the attic floor. The space is left clean and ready for new insulation.
Rodent Proofing & Exclusion
Signs you need it
You hear scratching in the ceiling at dusk or dawn, or keep finding new droppings even after trapping.
What it costs in Marietta
Rodent proofing and exclusion in Marietta typically costs $300-$1,200 for a full perimeter treatment.
How we do it
We seal gable vents, soffit gaps, roof returns, and utility penetrations with steel mesh and foam. Then we set traps and monitor until activity stops.
What Attic Cleaning & Rodent Proofing Costs in Marietta
| Item | Typical range in Marietta |
|---|---|
| Attic cleanout | $500-$2,500 |
| Attic sanitizing & decontamination | $1,000-$4,000 |
| Rodent proofing & exclusion | $300-$1,200 |
| Attic restoration | $2,000-$6,000 |
How fast can you get rodents out of my Marietta attic?
We start sealing entry points the same visit and set traps immediately. Activity typically drops within days, and once exclusion is complete the problem doesn’t return. Call (855) 657-3403 for a same-week assessment.
Is attic cleaning really necessary after rodent removal in Marietta?
Yes. Rodent droppings and urine contaminate insulation and duct surfaces, and that material keeps smelling and breeding mold in a humid Georgia attic. Cleaning plus replacement is the only way to reset the space.
Home Energy Audit in Marietta
A home energy audit in Marietta is the diagnostic starting point that makes every other insulation job smarter, because it finds exactly where your 1950s brick ranch or 1980s East Cobb two-story is leaking energy before anyone spends a dollar on materials. In this climate, the audit almost always reveals attic air leaks and under-insulated rim joists as the top two priority fixes. Our Home Energy Audit combines blower door testing, thermal imaging, and a full insulation inspection.
Blower Door Test
Signs you need it
Rooms feel drafty, energy bills are high, or you want hard numbers on where your house leaks before paying for fixes.
What it costs in Marietta
A blower door test in Marietta typically costs $200-$500 as part of a full audit.
How we do it
We mount a calibrated fan in an exterior door, depressurize the house, and measure how many cubic feet per minute leak in. The number tells us if air sealing is a high or low priority.
Thermal Imaging Inspection
Signs you need it
Some rooms stay hot or cold no matter what you set the thermostat to, or you suspect insulation is missing in certain walls or ceilings.
What it costs in Marietta
A thermal imaging inspection in Marietta typically runs $150-$400 when added to an audit.
How we do it
We scan interior walls, ceilings, and floors with an infrared camera while the blower door runs. Cold or hot stripes show exactly where insulation is thin or missing.
What Home Energy Audit Costs in Marietta
| Item | Typical range in Marietta |
|---|---|
| Full home energy audit | $300-$800 |
| Blower door test | $200-$500 |
| Thermal imaging inspection | $150-$400 |
| Duct leakage test | $200-$400 |
Is a home energy audit worth it before I insulate in Marietta?
Yes, especially in older Marietta homes where air leaks and missing wall insulation hide behind finished surfaces. An audit tells you which single project will cut your bills most, so you don’t pay for the wrong fix first.
Will the energy audit qualify me for any rebates in Marietta?
That depends on your utility and the scope of work. We can point you to current programs that apply to insulation and air sealing upgrades. Call (855) 657-3403 and a live person will walk you through the process.
Brands We Service in Marietta
We work with Owens Corning, Johns Manville, and Knauf insulation, stocking the common sizes and densities so most Marietta jobs go from quote to done without waiting on freight. For the full list and details on each line, see our brands.
Pricing for Insulation in Marietta, GA
| Service | Typical range in Marietta |
|---|---|
| Crawl space vapor barrier | $1,200-$3,000 |
| Full crawl space encapsulation | $5,000-$15,000 |
| Closed-cell spray foam | $2.00-$4.50 per board ft |
| Blown-in fiberglass | $1.50-$4.00 per sq ft |
| Blown-in cellulose | $1.50-$4.00 per sq ft |
| Attic radiant barrier | $1,500-$4,000 |
| Attic insulation removal | $1.50-$3.00 per sq ft |
| Attic floor air sealing | $800-$2,500 |
| Injection foam wall insulation | $2.50-$6.00 per sq ft |
| Attic cleanout | $500-$2,500 |
| Full home energy audit | $300-$800 |
In Marietta, pricing moves up when attics have rodent contamination, crawl spaces need drainage correction, or walls require extra access work on brick veneer homes. Our quotes are upfront and line-itemed before any work starts, and every job carries the 90-Day Done Right Promise.
Neighborhoods We Serve in Marietta
We run crews across Marietta daily, including the older brick ranch corridors along Roswell Road, the split-levels near Murdock Road, and the 1980s-1990s builder-grade two-stories throughout East Cobb. Most calls get a technician dispatched within one business day.
- East Cobb
- Historic Marietta Square area
- Roswell Road corridor
- Murdock Road area
- West Marietta
Service Area - Cities Near Marietta
Warmline Insulation Co. serves Marietta and the surrounding Cobb County communities from our Atlanta metro dispatch office. If you’re in a neighboring city, we cover Smyrna, GA, Kennesaw, GA, Atlanta, GA, and Acworth, GA with the same live-person scheduling and 90-Day Done Right Promise.
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 homeowners get a technician on site within one business day, and many insulation jobs are completed the same visit. Calls reach a live person 24/7, so quote scheduling never waits on a callback.
Most insulation retrofits don’t require a permit in Marietta, but some encapsulations and HVAC-adjacent air sealing work can cross into permit territory. We check local requirements for every job before work starts and handle any filing needed.
If something isn’t right within 90 days, we make it right at no charge. That means callbacks, adjustments, and touch-ups on our work are handled on our schedule and our dime, no runaround. Call (855) 657-3403 for a free estimate on any insulation service in Marietta.
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 60-minute.
- 4You approve before work beginsNothing starts until you say go.
What Marietta Customers Say
"Rodents had been in the attic for years before we bought the place. They vacuumed everything out, sanitized, sealed the entry points with mesh and foam, and only then put new insulation down. Photos of every stage before I paid."
- Darnell Whitfield"They did the energy audit first - blower door and thermal camera - and showed me exactly where the house was leaking before selling me anything. The fix ended up being air sealing plus a modest attic top-up, not the full replacement another company pushed."
- Grace Nakamura"Solid work on the spray foam in the rim joists and the garage ceiling. Scheduling slipped a day because of rain, which they called about ahead of time. Would use them again."
- Tom Reinholt