Insulation in Alpharetta, GA
Spray foam insulation in Alpharetta runs $3.50-$8.00 per board foot depending on foam type and depth, and the work happens year-round. But the number that matters more in this city isn’t the foam price. It’s the fact that most Alpharetta homes were built during the 1990s and 2000s GA-400 tech boom, when Georgia’s energy code asked for attics insulated to R-19 or R-25, while today’s code calls for R-38 to R-49. That gap means large executive homes that look new are thermally underperforming by a generation’s worth of code improvements, and owners feel it in their July cooling bills. We’re Topside Attic Insulation, and we fix that in a specific order: seal first, then insulate. Call (218) 261-7714 for a written price before any work starts.
Why Alpharetta Homes Are Different
Alpharetta sits in IECC Climate Zone 3A, hot-humid, where summers push into the mid-to-upper 90s with high relative humidity. That humidity is the reason we treat air sealing as a hard prerequisite, not an upsell. Vapor-permeable insulation assemblies without air barriers allow humid outdoor air to drive moisture into wall and attic cavities, and in this climate that leads to mold and degraded R-value within a few seasons.
The housing stock compounds the problem. Planned communities like Windward feature large two-story brick homes with complex multi-plane rooflines, cathedral ceilings, and bonus rooms over garages. That finished bonus room above the garage is the single most-cited comfort complaint we hear in Alpharetta. Builder-era construction left only minimal batt insulation at the garage ceiling deck with no air sealing, so those rooms run 10 to 15 degrees hotter than the rest of the house on a July afternoon. The pattern is consistent enough that we can often quote the fix before pulling out a thermal camera. Winters bring occasional hard freezes, so the same air leaks that tax your AC in August also pull heat out in January.
Our Main Alpharetta Services
Two envelope problems dominate Alpharetta call lists: under-insulated attics in 1990s and 2000s executive homes, and vented crawl spaces pulling humid air into the structure. Both are covered below with their own detailed pages.
Attic Insulation in Alpharetta
Most Alpharetta attics we open are sitting at R-19 to R-25 fiberglass batts when code now calls for R-38 to R-49. That shortfall translates directly into cooling bills and upstairs rooms that never hold temperature. We air seal top plates, can lights, and penetrations before adding insulation, then publish the before-and-after blower-door numbers so you can see the measured change. This isn’t a topping-off job; it’s closing a half-generation code gap in one afternoon. Read the full breakdown on our Attic Insulation in Alpharetta page.
Crawl Space Encapsulation & Vapor Barrier in Alpharetta
Alpharetta’s hot-humid summers make vented crawl spaces a liability. Humid outdoor air enters through foundation vents, condenses on cooler surfaces, and feeds mold, warped flooring, and dust mites. Encapsulation closes the vents, installs a vapor barrier over the floor and walls, and turns the crawl space into a semi-conditioned zone. The result is measurable at the blower door and visible in lower indoor humidity. See Crawl Space Encapsulation & Vapor Barrier in Alpharetta for scope and pricing specifics.
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 Alpharetta
Spray foam is the most direct answer to Alpharetta’s combination of hot-humid climate and 1990s-era construction. In Zone 3A, closed-cell foam gives you both an air barrier and an R-value that holds up against moisture, which matters when the dew point is inside the assembly. Open-cell foam, by contrast, is more forgiving acoustically and works well in vented attics when the primary goal is slowing air movement. We install both, and we measure the result with a blower door before and after whenever the job touches the envelope. Compare material options on our Spray Foam Insulation page.
Open-Cell Spray Foam
Signs you need it
Upstairs rooms in Windward-era homes that run 5-10 degrees warmer than the main floor despite a full attic blanket, or attic hatches that leak air you can feel on a humid afternoon.
What it costs in Alpharetta
Open-cell spray foam in Alpharetta typically runs $0.45-$1.10 per board foot installed, with most attic jobs landing between $1,500 and $4,500 depending on square footage and depth.
How we do it
We seal top plates and penetrations, verify ventilation, then spray to the specified depth and return with a blower door to document the before-and-after CFM50 change.
Closed-Cell Spray Foam
Signs you need it
Cathedral ceilings or bonus rooms over garages in Alpharetta that can’t hold temperature, or roof decks where you want an air-impermeable barrier plus high R-value per inch.
What it costs in Alpharetta
Closed-cell foam runs $1.00-$2.50 per board foot installed in Alpharetta; a typical roof deck or cathedral ceiling job falls between $3,000 and $9,500.
How we do it
We prep the substrate, spray to the designed depth (usually 2-3 inches for R-13 to R-19 at the roof deck), and document the air-sealing result with a blower door reading.
What Spray Foam Insulation Costs in Alpharetta
| Item | Typical range in Alpharetta |
|---|---|
| Open-cell spray foam (per board foot) | $0.45-$1.10 |
| Closed-cell spray foam (per board foot) | $1.00-$2.50 |
| Typical attic spray foam job (labor + material) | $1,500-$9,500 |
Is spray foam worth the cost in Alpharetta’s climate?
For cathedral ceilings and bonus rooms over garages, yes. Closed-cell foam is the only insulation that combines a full air barrier with high R-value per inch, which matters when Alpharetta’s humid air would otherwise condense inside fiberglass or cellulose.
How long does spray foam take to install in Alpharetta?
Most attic or roof deck spray foam jobs in Alpharetta take one to two days. You get a written scope, a flat price, and before-and-after blower-door readings if the job touches the envelope. Call (218) 261-7714 for a free estimate.
Blown-In Insulation in Alpharetta
Blown-in insulation is the default fix for Alpharetta’s under-insulated attic floors, where 1990s R-19 batts need a top-up to R-38 or R-49. Fiberglass and cellulose both work in this climate, but only if the attic floor is air sealed first, because in Zone 3A humid outside air will drive straight through any insulation that doesn’t have an air barrier under it. We spend as much time sealing top plates, can lights, and duct boots as we do blowing insulation. Details on materials and R-value targets are on our Blown-In Insulation page.
Blown-In Cellulose
Signs you need it
Attic floors in Alpharetta homes from the 1990s and early 2000s that measure only a few inches of settled fiberglass, or rooms that heat up fast on summer afternoons.
What it costs in Alpharetta
Blown-in cellulose in Alpharetta runs $0.80-$1.40 per square foot for attic floor coverage, with a typical 2,500-square-foot attic landing between $2,000 and $3,500.
How we do it
We air seal the attic floor first, then blow cellulose to the specified depth with a calibrated machine and document the final R-value in your written record.
Blown-In Top-Up
Signs you need it
Existing attic insulation in Alpharetta that has settled below the top of the ceiling joists, or a heating-and-cooling bill that jumped in a home built before 2010.
What it costs in Alpharetta
A blown-in top-up over existing insulation in Alpharetta typically runs $0.60-$1.20 per square foot, so most attics cost between $1,500 and $3,000.
How we do it
We evaluate existing material, seal air leaks, then blow additional insulation to bring the attic to R-38 or R-49 and photograph the result for your record.
What Blown-In Insulation Costs in Alpharetta
| Item | Typical range in Alpharetta |
|---|---|
| Blown-in cellulose (per sq ft attic floor) | $0.80-$1.40 |
| Blown-in top-up over existing | $0.60-$1.20 |
| Typical 2,500 sq ft attic installation | $1,500-$3,500 |
Does blown-in insulation settle in Alpharetta attics?
Cellulose settles about 10 percent over the first year and stabilizes, which is why we install slightly deeper than the target R-value. Fiberglass settles less. Your written scope states the installed depth so you can verify it later.
Can you blow insulation over old insulation?
Yes, as long as the old material is dry and the attic floor is air sealed first. In Alpharetta we regularly top up 1990s batts that have settled, bringing attics to R-49 in a single visit. Call (218) 261-7714 for a free estimate.
Radiant Barrier Installation in Alpharetta
Radiant barrier works in Alpharetta because our problem is radiant heat gain: an attic roof deck that hits 130-140 degrees in July and radiates heat down onto the insulation below. A foil barrier stapled to the underside of the roof deck reflects that heat back out, and in a hot-humid climate the savings show up mostly in August, when your AC is fighting the sun. We install radiant barrier as a complement to insulation, not a replacement, and we document the surface temperature difference during the job. See our Radiant Barrier Installation page for more on how it works in Zone 3A.
Attic Radiant Barrier
Signs you need it
An Alpharetta attic that’s 120 degrees or hotter on a summer afternoon, or upstairs rooms that run 8-10 degrees warmer than the main floor even with R-38 insulation.
What it costs in Alpharetta
Attic radiant barrier in Alpharetta runs $0.50-$1.00 per square foot installed, so a typical 2,500-square-foot attic costs between $1,250 and $2,500.
How we do it
We staple the foil to the underside of the roof deck with an air gap, then check the surface temperature difference and photo-document the installation.
Radiant Barrier & Ventilation
Signs you need it
Alpharetta attics with ridge venting but no radiant barrier where the AC runs almost continuously on 95-degree afternoons, or homeowners looking to cut cooling costs without replacing insulation.
What it costs in Alpharetta
Combined radiant barrier with ventilation upgrades in Alpharetta typically runs $1,200-$4,000 depending on attic size, existing venting, and access.
How we do it
We evaluate existing ventilation, install the barrier, and adjust baffles as needed so the attic can reject heat without pulling humid outside air into the envelope.
What Radiant Barrier Installation Costs in Alpharetta
| Item | Typical range in Alpharetta |
|---|---|
| Attic radiant barrier (per sq ft) | $0.50-$1.00 |
| Radiant barrier & ventilation combined | $1,200-$4,000 |
| Typical 2,500 sq ft attic installation | $1,250-$2,500 |
Does radiant barrier help in Alpharetta’s humid climate?
Yes, because its job is reflecting radiant heat, not managing moisture. It lowers attic temperatures, which reduces the heat load on your insulation and your AC. It should never be used as a substitute for air sealing.
Is radiant barrier better than spray foam in Alpharetta?
No, they solve different problems. Radiant barrier reflects heat; spray foam stops heat and air movement. In Alpharetta, many homes benefit most from air sealing plus insulation, with radiant barrier added where the roof deck surface gets extremely hot. Call (218) 261-7714 for a free estimate.
Insulation Removal & Replacement in Alpharetta
Insulation removal in Alpharetta usually follows one of three events: a rodent infestation in a Windward-era attic, water intrusion from a roof leak during a hard freeze, or the discovery of vermiculite that should not be disturbed. We remove the old material with vacuum equipment that keeps contaminants out of the living space, then replace it with air sealing and new insulation rated for Zone 3A. The job ends with a written record of what was removed and what went back in. Learn how we approach removal safely on our Insulation Removal & Replacement page.
Attic Insulation Removal
Signs you need it
Alpharetta attics where old fiberglass is compressed, moldy, or mixed with animal droppings, or where the existing R-value has collapsed and top-up won’t fix the air-sealing layer.
What it costs in Alpharetta
Attic insulation removal in Alpharetta runs $1.50-$3.00 per square foot, so most attics cost between $1,800 and $6,000 depending on depth and access.
How we do it
We vacuum the attic to the decking with HEPA equipment, bag and dispose of the material, then document the clean deck before new air sealing begins.
Insulation Replacement
Signs you need it
Post-removal jobs where the original insulation was moldy, pest-contaminated, or water-damaged, and the homeowner wants a clean start with air sealing included.
What it costs in Alpharetta
Insulation replacement in Alpharetta combines removal and new material, typically running $3,500-$8,000 for an attic, depending on material choice and square footage.
How we do it
We remove the old material, air seal the attic floor, install new insulation to R-38 or R-49, and finish with a blower-door reading and photo record.
What Insulation Removal & Replacement Costs in Alpharetta
| Item | Typical range in Alpharetta |
|---|---|
| Attic insulation removal (per sq ft) | $1.50-$3.00 |
| Full replacement (removal + new insulation) | $3,500-$8,000 |
| Rodent-contaminated removal & sanitizing | $2,500-$6,500 |
Can I remove attic insulation myself in Alpharetta?
We advise against it. Old insulation may contain vermiculite, mold, or rodent droppings that need proper containment. Our HEPA equipment keeps those particles out of your living space, and you get a written record of disposal.
How long does insulation removal take?
Most Alpharetta attics take one to two days for full removal and replacement. The schedule is set at contract, and the crew arrives with the equipment, not after the fact. Call (218) 261-7714 for a free estimate.
Attic Air Sealing in Alpharetta
Attic air sealing is the first thing we do in Alpharetta, before any insulation goes in. That’s because the hot-humid air in this climate will drive moisture through unsealed penetrations into your attic and walls, degrading whatever insulation sits above them. Top plates, can lights, and duct boots are the usual leak sites in 1990s Windward-era construction. We seal them, then measure the change with a blower-door test and give you the before-and-after CFM50 numbers. Read more on our Attic Air Sealing page.
Top Plate & Penetration Sealing
Signs you need it
Alpharetta homes where upstairs rooms won’t hold temperature, or where you can feel air moving around bathroom fans, plumbing stacks, or recessed lights.
What it costs in Alpharetta
Top plate and penetration sealing in Alpharetta runs $0.50-$1.50 per square foot of attic floor, with most attics between $600 and $2,400.
How we do it
We locate every penetration with a blower door running, seal each gap with foam or caulk, then re-test to confirm the CFM50 reduction.
Attic Hatch Sealing
Signs you need it
An attic hatch in Alpharetta that you can feel air moving around from the hallway below, or a pull-down stair that lets conditioned air escape into the attic year-round.
What it costs in Alpharetta
Attic hatch sealing in Alpharetta typically costs $200-$500 including weatherstripping, an insulated cover, and sealing around the frame.
How we do it
We weatherstrip the hatch, build or install an insulated lid to the attic side, and caulk the frame so the hatch becomes a thermal boundary, not a leak.
What Attic Air Sealing Costs in Alpharetta
| Item | Typical range in Alpharetta |
|---|---|
| Top plate & penetration sealing (per sq ft) | $0.50-$1.50 |
| Attic hatch sealing | $200-$500 |
| Full attic air sealing package | $600-$2,400 |
Why is air sealing done before insulation in Alpharetta?
Because in IECC Climate Zone 3A, humid outdoor air moves through unsealed gaps and condenses inside the insulation, causing mold and reducing R-value. Sealing first means the insulation actually performs at its rated value.
Do I need air sealing if I already have attic insulation?
Yes, most Alpharetta homes have insulation but no air-sealing layer underneath it. We regularly find R-38 attics that leak air through top plates, costing as much as a poorly insulated attic. Call (218) 261-7714 for a free estimate.
Wall Insulation in Alpharetta
Wall insulation in Alpharetta is a retrofit problem. Most 1990s executive homes have fiberglass batts in the walls, but those batts lose their R-value where they’re compressed around wiring, plumbing, and outlet boxes, and they don’t stop air movement. The fix is often injection foam or drill-and-fill, which fills the cavity completely and adds an air-sealing layer. This matters in hot-humid Georgia summers because it keeps humid outside air from driving into the wall cavity from the outside. See our Wall Insulation page for material options.
Injection Foam Wall Insulation
Signs you need it
Alpharetta brick homes where exterior walls stay warm to the touch on summer afternoons, or rooms that never hold temperature despite attic insulation.
What it costs in Alpharetta
Injection foam wall insulation in Alpharetta runs $1.50-$3.50 per square foot of wall area, with most single-story exterior walls between $2,500 and $7,000.
How we do it
We drill small holes through the wall cladding or drywall, inject foam to fill the cavity, then patch and verify coverage with an infrared camera.
Interior Wall Soundproofing
Signs you need it
Alpharetta bedrooms sharing a wall with a bonus room, home office, or laundry where the owner wants real acoustic separation, not just thermal performance.
What it costs in Alpharetta
Interior wall soundproofing in Alpharetta runs $1.00-$3.00 per square foot, so a typical shared wall costs between $900 and $3,600.
How we do it
We install dense-pack cellulose or sound-rated batt insulation inside the stud cavities, then document the acoustic improvement and airtightness change.
What Wall Insulation Costs in Alpharetta
| Item | Typical range in Alpharetta |
|---|---|
| Injection foam (per sq ft wall area) | $1.50-$3.50 |
| Drill & fill wall insulation | $1.00-$3.00 |
| Interior wall soundproofing (per sq ft) | $1.00-$3.00 |
Can you insulate existing walls without opening them up?
Yes. Drill-and-fill and injection foam go through small holes that get patched after. The method depends on your cladding type and stud spacing, both of which we assess before quoting.
Does wall insulation help with cooling in Alpharetta?
Yes, especially on west-facing walls that take full afternoon sun. The bigger gain comes from air sealing the wall cavity at the same time, which stops humid outside air from condensing inside. Call (218) 261-7714 for a free estimate.
Attic Cleaning & Rodent Proofing in Alpharetta
Attic cleaning in Alpharetta means removing more than old insulation: it means dealing with the squirrels and roof rats that take advantage of the city’s big hardwood canopies and complex rooflines. Rodents nest in fiberglass, chew wiring, and leave droppings that can carry diseases. We vacuum out the contaminated material, sanitize the space, and seal every entry point with steel mesh and foam so they can’t get back in. This is not a trap-and-release service; exclusion is the point. Full scope on our Attic Cleaning & Rodent Proofing page.
Rodent Proofing & Exclusion
Signs you need it
Scratching in Alpharetta attics around dawn or dusk, droppings in the insulation, or chewed wiring where squirrels have nested above a garage.
What it costs in Alpharetta
Rodent proofing and exclusion in Alpharetta runs $500-$2,500 depending on the number of entry points and linear feet of sealing required.
How we do it
We find every entry point, install exclusion material that allows escape but not re-entry, and seal with steel mesh, foam, and flashing as needed.
Attic Cleanout
Signs you need it
Alpharetta attics that haven’t been entered in years, with compressed insulation, dead insects, or evidence of past rodent activity that makes the space unsafe to access.
What it costs in Alpharetta
Attic cleanout in Alpharetta runs $800-$3,500 depending on attic size, contamination level, and whether insulation is also being replaced.
How we do it
We remove debris and contaminated insulation, vacuum to the decking, sanitize the space, and photograph everything for your written record.
What Attic Cleaning & Rodent Proofing Costs in Alpharetta
| Item | Typical range in Alpharetta |
|---|---|
| Rodent proofing & exclusion | $500-$2,500 |
| Attic cleanout | $800-$3,500 |
| Contaminated insulation removal & sanitizing | $2,500-$6,500 |
How do you keep rodents out of an Alpharetta attic permanently?
Exclusion, not trapping. Every entry point gets sealed with materials rodents can’t chew through, and we document each closure. Traps catch the current problem; exclusion prevents the next one.
Should I replace insulation after rodent removal?
Usually yes. Rat and squirrel droppings contaminate fiberglass, and the urine smell won’t leave on its own. We remove and replace with fresh material after sealing the entry points. Call (218) 261-7714 for a free estimate.
Home Energy Audit in Alpharetta
A home energy audit in Alpharetta gives you the numbers behind your comfort complaints: blower-door CFM50, infrared surface temperatures, and duct leakage measurements. For most 1990s-era homes in this city, the audit reveals the exact same thing we see on every job: significant air leakage at the attic floor, under-insulated bonus rooms over garages, and ductwork leaking into unconditioned space. We hand you the written results and the building envelope recommendations. Explore what the audit includes on our Home Energy Audit page.
Blower Door Test
Signs you need it
Alpharetta homes that never hold temperature, or where the homeowner wants a single number that quantifies how much conditioned air the house is losing.
What it costs in Alpharetta
A standalone blower door test in Alpharetta runs $150-$400, and we usually fold it into an audit or air-sealing job.
How we do it
We mount the fan in an exterior door, depressurize the house, and read the CFM50, then locate leaks by hand and with an infrared camera.
Thermal Imaging Inspection
Signs you need it
Rooms in Alpharetta homes that feel 10 degrees off, wall cavities that sweat in summer, or owners still uncomfortable after adding attic insulation.
What it costs in Alpharetta
Thermal imaging as part of an energy audit in Alpharetta runs $200-$500, often bundled with the blower door test.
How we do it
We scan ceilings, walls, and floors with an infrared camera to map insulation voids and air leaks, then match each anomaly to a recommended fix.
What Home Energy Audit Costs in Alpharetta
| Item | Typical range in Alpharetta |
|---|---|
| Standalone blower door test | $150-$400 |
| Full energy audit (blower door + thermal) | $350-$900 |
| Duct leakage test add-on | $100-$250 |
What is a good blower door number in Alpharetta?
For a 2,500-square-foot Alpharetta home, a CFM50 reading below 1,800 is good; below 1,200 is tight. We regularly find 1990s homes reading 4,000-plus before sealing, which is like a window left open all year.
Do I need an energy audit before insulating?
It helps, but it isn’t required. If you already know the rooms that don’t hold temperature, we can quote the fix directly. The audit matters when you want the numbers to prove where the air is actually leaving. Call (218) 261-7714 for a free estimate.
Brands We Service in Alpharetta
We install materials from Johns Manville, Knauf, Rockwool, and CertainTeed, and we stock the most common depths locally for fast turnaround. No proprietary lock-in, so you get the right product for the job, not the product we happen to sell. See our brands for the full range.
Pricing for Insulation in Alpharetta, GA
| Service | Typical range in Alpharetta |
|---|---|
| Open-cell spray foam (per board foot) | $0.45-$1.10 |
| Closed-cell spray foam (per board foot) | $1.00-$2.50 |
| Blown-in cellulose (per sq ft attic floor) | $0.80-$1.40 |
| Attic radiant barrier (per sq ft) | $0.50-$1.00 |
| Attic insulation removal (per sq ft) | $1.50-$3.00 |
| Top plate & penetration sealing (per sq ft) | $0.50-$1.50 |
| Injection foam wall insulation (per sq ft) | $1.50-$3.50 |
| Rodent proofing & exclusion | $500-$2,500 |
| Full home energy audit | $350-$900 |
Price drivers in Alpharetta are attic access, depth of existing insulation, and the complexity of 1990s multi-plane rooflines, which add time to air sealing. Under The Haven Standard, you get a written price before any work starts, and no number changes after the scope is agreed.
Neighborhoods We Serve in Alpharetta
We run crews into every Alpharetta subdivision and planned community, and because dispatch is coordinated locally from the metro Atlanta office, response times are measured in hours, not days. Typical neighborhoods on the schedule:
- Windward
- Kimball Bridge
- Ansley Park
- Park Glenn
- The Manor
Service Area - Cities Near Alpharetta
Our Alpharetta crews also serve the surrounding north metro corridor. If you’re a few minutes down GA-400, we cover Roswell, GA and Marietta, GA to the west, plus Smyrna, GA and Atlanta, GA if the job is in our dispatch range. Same crews, same written-price standard.
Serving Alpharetta, GA - Our Local Coverage Area
We’re based in the Alpharetta 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 Alpharetta
Same day in most Alpharetta neighborhoods. A live person answers calls 24/7, and since scheduling is handled from our metro Atlanta office, we can often have a crew on site within hours for urgent issues like water-damaged insulation.
Interior work like attic insulation, air sealing, and wall injection almost never requires HOA approval in Alpharetta. Exterior-visible changes, like roof deck spray foam or new venting, may need a design review. We’re familiar with the common covenants and can tell you what to file.
Yes, that’s the only way we work. Air sealing of the attic floor, top plates, and penetrations happens before any insulation goes in, and both are documented in your written record with before-and-after blower-door numbers where applicable.
Call (218) 261-7714 for a free estimate and a written price before any work starts. Wes Okafor and the team at Topside Attic Insulation serve every Alpharetta neighborhood with the same standard: sealed first, then insulated, then documented.
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 Alpharetta Customers Say
"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."Crawl space encapsulation done properly. Photographs of the vapour barrier at every seam, and the damp smell in the hallway is gone."
- Ainsley P.