Insulation in Miami, FL
Spray foam insulation in Miami is built around one fact: this city sits in IECC Climate Zone 1, where attic temperatures regularly pass 140°F and dew points stay above 75°F for most of the year. The dominant housing stock is CBS (concrete block) homes from the 1950s through the 1980s, which have no wall cavities for standard batts and need interior furring strips or closed-cell foam applied directly to masonry. If you’re looking for insulation help, call us at (218) 261-7714 for a written price before any work starts.
Why Miami Homes Are Different
Miami is an inward vapor-drive climate. Everywhere else in the country, vapor retarders go on the interior side to keep indoor moisture out of wall cavities. Here, that logic is reversed: hot, humid outdoor air constantly pushes toward the air-conditioned interior, so a vapor barrier on the standard side traps moisture inside the wall and feeds mold within months. We learned this the hard way on CBS homes in Shenandoah and The Roads, where misapplied vapor control turned a cosmetic re-insulation into a remediation job.
Miami-Dade County is also a High Velocity Hurricane Zone (HVHZ). That’s not a marketing phrase. Every insulation product installed in the county has to carry a Miami-Dade Notice of Acceptance (NOA). A product that’s ICC- or UL-listed with no NOA is an out-of-code installation here, and Miami-Dade inspectors check the permit card. Out-of-state crews get failed on this constantly because they never run the NOA database. Post-Andrew construction (1992 onward) added tighter wind codes, concrete tile roofs, and impact-rated assemblies that change how insulation layers get sequenced on the roof deck.
Our Main Miami Services
Two services dominate the calls we get from Miami homeowners: attic insulation and crawl space work. Both are shaped by the same heat and moisture conditions that make this county unique.
Attic Insulation in Miami
Attics in Miami run hot enough to shorten HVAC equipment life, and most homes built before 1992 have insulation that’s settled, rodent-damaged, or never adequate for Zone 1. We air-seal the attic floor before adding insulation, because blowing fiberglass over unsealed top plates and can lights is how you get a cooler attic and a still-leaking house. Full details live on our Attic Insulation in Miami page.
Crawl Space Encapsulation & Vapor Barrier in Miami
Crawl spaces in Miami fight the same inward vapor drive as walls, plus standing water after afternoon storms. A sealed crawl space with a proper vapor barrier stops humid outdoor air from rising into the living space and gives you a documented, drier foundation area. Every encapsulation job ends with a photo record. See Crawl Space Encapsulation & Vapor Barrier in Miami for what it costs and how we sequence the work.
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 Miami
Spray foam is the default answer for Miami’s CBS walls and unvented attic assemblies. Closed-cell foam applied to the underside of the roof deck keeps HVAC equipment out of superheated attic air, blocks the inward vapor drive, and carries the NOA numbers Miami-Dade inspectors look for. We install Spray Foam Insulation with air sealing as the first step, never as an afterthought.
Open-Cell Spray Foam
Signs you need it
Your attic gets above 140°F in the afternoon and interior rooms directly under the roof deck never fully cool down.
What it costs in Miami
Open-cell foam on a typical Miami attic roof deck runs between $1.80 and $2.50 per board foot installed, depending on depth and access.
How we do it
We apply open-cell foam directly to the roof deck after sealing top plates and penetrations, then document the job with photos and a final depth check.
Closed-Cell Spray Foam
Signs you need it
Your CBS walls sweat, paint bubbles on interior furring strips, or you need an NOA-rated vapor barrier that also adds structural racking strength.
What it costs in Miami
Closed-cell foam in Miami runs $2.80 to $4.00 per board foot installed, with the higher end reflecting thicker lifts on HVHZ-rated roof decks.
How we do it
We spray closed-cell in lifts, verify thickness against the spec, and run a blower-door test before and after when the job includes air sealing.
What Spray Foam Insulation Costs in Miami
| Item | Typical range in Miami |
|---|---|
| Open-cell spray foam (roof deck, per board foot) | $1.80 - $2.50 |
| Closed-cell spray foam (per board foot) | $2.80 - $4.00 |
| Rim joist spray foam (per linear foot) | $12 - $22 |
Does spray foam need an NOA in Miami?
Yes. Miami-Dade County requires a Notice of Acceptance for every insulation product installed. We use materials with active NOAs and provide the documentation with your written scope.
Can you spray foam my attic roof deck in one day?
Most open-cell roof deck applications take one working day in a standard Miami ranch or two-story CBS home. Call (218) 261-7714 and we’ll give you a written price with the schedule included.
Blown-In Insulation in Miami
Blown-in insulation is the fastest way to get a Miami attic up to Zone 1 code after the air leaks are sealed. On 1950s CBS homes in Westchester and Flagami, we usually find R-11 fiberglass or nothing at all, which is why afternoon rooms run warm even with the AC running. We install Blown-In Insulation only after the attic floor is air-sealed, because loose fill over open penetrations does almost nothing.
Blown-In Cellulose
Signs you need it
Rooms under the attic are 5°F to 8°F warmer than rooms on lower floors, and your AC runs continuously on summer afternoons.
What it costs in Miami
Blown-in cellulose in a typical Miami attic runs $1.10 to $1.80 per square foot installed, including air sealing and rafter baffles.
How we do it
We air-seal the attic floor, install baffles at the eaves, and blow cellulose to the target R-value while photographing every stage.
Blown-In Fiberglass
Signs you need it
Your existing fiberglass has settled below the top of the joists or shows rodent trails and compressed patches.
What it costs in Miami
Blown-in fiberglass runs $0.90 to $1.60 per square foot installed in Miami, depending on depth and whether we’re topping up or starting fresh.
How we do it
We remove or stabilize the old layer, seal penetrations, then blow Knauf or CertainTeed fiberglass to the R-value written in your scope.
What Blown-In Insulation Costs in Miami
| Item | Typical range in Miami |
|---|---|
| Blown-in cellulose (per square foot) | $1.10 - $1.80 |
| Blown-in fiberglass (per square foot) | $0.90 - $1.60 |
| Attic floor air sealing (flat rate) | $650 - $1,400 |
Is blown-in insulation enough for Miami’s heat?
If the attic floor is air-sealed first and you blow to R-38 or higher, yes. Blown-in without air sealing leaves the biggest leak paths open, and performance stays disappointing.
How long does blown-in insulation last in Miami’s humidity?
Cellulose holds up fine in a ventilated Miami attic as long as the roof doesn’t leak and baffles keep the eaves open. Call for a written price and we’ll include a moisture assessment.
Radiant Barrier Installation in Miami
Radiant barrier reflects heat before it radiates down into the living space, which matters in a city where attic surfaces hit 140°F from May through October. It’s not a substitute for insulation, but in Miami it’s one of the few products that actually attacks the dominant problem: radiant heat from the roof deck. We install Radiant Barrier Installation with ventilation adjustments so the attic doesn’t hold moisture.
Attic Radiant Barrier
Signs you need it
Your attic floor insulation tests at the right R-value but rooms below still heat up fast in the afternoon sun.
What it costs in Miami
Attic radiant barrier on a Miami home runs $0.80 to $1.50 per square foot of attic floor area installed.
How we do it
We staple or adhere the barrier to the roof deck or rafters, leave the required air gap, and check that attic ventilation still moves air.
Radiant Barrier Roof Deck
Signs you need it
You’re re-roofing a post-Andrew concrete tile roof and want the heat rejection layer installed while the deck is accessible.
What it costs in Miami
Roof deck radiant barrier runs $1.00 to $1.80 per square foot installed during a re-roof, less when combined with other work.
How we do it
We install the barrier directly under the decking before insulation goes in, coordinating with your roofer’s schedule.
What Radiant Barrier Installation Costs in Miami
| Item | Typical range in Miami |
|---|---|
| Attic radiant barrier (per square foot of attic floor) | $0.80 - $1.50 |
| Radiant barrier roof deck (per square foot) | $1.00 - $1.80 |
| Radiant barrier plus ventilation adjustment | $250 - $600 |
Does radiant barrier actually work in Miami?
Yes, when it’s installed with the required air gap and paired with adequate attic insulation. Reflective surfaces only work facing an air space, so installation details matter.
Will radiant barrier cause moisture problems in a ventilated attic?
Not if ventilation stays balanced. We inspect the existing eave and ridge vents before installing, because Miami’s humidity punishes any attic that can’t move air.
Insulation Removal & Replacement in Miami
Removal jobs in Miami almost always involve either rodent contamination, water damage from a tile roof leak, or someone’s earlier attempt to insulate CBS walls with batts. The inward vapor drive means a wet insulation layer in an attic or wall never dries out on its own, and that’s what turns a small leak into a full replacement. We handle Insulation Removal & Replacement as a single documented job: remove, sanitize, air-seal, then replace.
Attic Insulation Removal
Signs you need it
You see rat droppings, stained insulation, or the existing material has compressed down to a thin mat.
What it costs in Miami
Attic insulation removal in Miami runs $1.10 to $1.90 per square foot, with contaminated material on the higher end.
How we do it
We vacuum the old material out through a HEPA-filtered machine, bag it, and photograph the empty attic before sealing and re-insulating.
Contaminated Insulation Removal
Signs you need it
You can smell rodent urine in the attic, find droppings throughout the insulation, or see visible mold on the underside of the roof deck.
What it costs in Miami
Contaminated removal runs $1.40 to $2.10 per square foot in Miami, including bagging, sanitizing, and disposal.
How we do it
We remove all affected material, sanitize the deck and joists, seal entry points, and only then install new insulation.
What Insulation Removal & Replacement Costs in Miami
| Item | Typical range in Miami |
|---|---|
| Attic insulation removal (per square foot) | $1.10 - $1.90 |
| Contaminated insulation removal (per square foot) | $1.40 - $2.10 |
| Full replacement with blown-in cellulose (per square foot) | $2.10 - $3.30 |
Do I need to remove old insulation before adding new?
Only if it’s wet, rodent-contaminated, or compressed below useful R-value. Otherwise we can top up over sound existing insulation after air sealing.
How fast can you remove and replace Miami attic insulation?
Most single-story Miami homes take one day for removal and one day for air sealing and replacement. Call (218) 261-7714 for a written price.
Attic Air Sealing in Miami
Air sealing in Miami is where we start every attic job, because an unsealed attic floor is a direct leak path for conditioned air into a superheated space. The blower-door test tells us exactly how much air the home is losing: we’ve seen Miami CBS homes read 4,200 CFM50 before sealing and 2,100 after, and the homeowner feels that difference the same week. We install Attic Air Sealing as a standalone service and as the first step before any insulation goes in.
Attic Floor Air Sealing
Signs you need it
Your blower-door number is above 3,000 CFM50 on a single-story Miami home, or you can see daylight coming through attic floor penetrations.
What it costs in Miami
Attic floor air sealing on a Miami home runs $650 to $1,400 for the full job, including top plates, penetrations, and hatches.
How we do it
We foam and caulk every penetration, seal top plates with spray foam, and hand you the before-and-after blower-door readings.
Can Light & Duct Boot Sealing
Signs you need it
Recessed can lights in the attic are warm to the touch, or you feel a draft around ceiling registers in the afternoon.
What it costs in Miami
Can light and duct boot sealing runs $35 to $80 per fixture in Miami, including fire-rated covers where required.
How we do it
We install fire-rated covers over non-IC cans and seal duct boots to the ceiling drywall with mastic and foam.
What Attic Air Sealing Costs in Miami
| Item | Typical range in Miami |
|---|---|
| Full attic floor air sealing | $650 - $1,400 |
| Can light sealing (per fixture) | $35 - $80 |
| Attic hatch sealing and weatherstripping | $120 - $260 |
Why do you air-seal before insulating in Miami?
Because insulation slows heat transfer but does not stop air movement. In Miami’s heat, an unsealed attic floor lets conditioned air escape into the attic, which is wasted money.
Will air sealing make my Miami home feel stuffy?
No. We seal the building envelope, not the living space. If we find a ventilation issue, we address it in the written scope before work starts.
Wall Insulation in Miami
Miami’s CBS homes have solid concrete block walls with no stud cavity, so standard batt insulation is off the table. The wall insulation conversation here is about injection foam, drill-and-fill through the block, or interior furring strips with Rockwool or rigid foam. The inward vapor drive makes wall insulation in Miami a mold-risk job when done wrong, which is why we document every step. We install Wall Insulation with a moisture assessment included.
Injection Foam Wall Insulation
Signs you need it
Your CBS walls are hot to the touch in the afternoon, or you see condensation on interior wall surfaces during humid spells.
What it costs in Miami
Injection foam for existing Miami walls runs $2.50 to $4.00 per square foot of wall area, drilled and filled through the block.
How we do it
We drill small holes through the stucco or interior finish, inject foam into the block cores, patch, and document the fill pattern.
Drill & Fill Wall Insulation
Signs you need it
Interior walls radiate heat even after the AC has been running all day, and your energy bill tracks with afternoon sun exposure.
What it costs in Miami
Drill-and-fill work in Miami runs $1.80 to $3.20 per square foot depending on whether we access from the exterior or interior.
How we do it
We drill at stud intervals, blow dense-pack cellulose or inject foam, patch the holes, and provide a photo record of every step.
What Wall Insulation Costs in Miami
| Item | Typical range in Miami |
|---|---|
| Injection foam wall insulation (per square foot) | $2.50 - $4.00 |
| Drill-and-fill wall insulation (per square foot) | $1.80 - $3.20 |
| Interior furring strip assembly with Rockwool (per square foot) | $4.00 - $6.50 |
Can you insulate my CBS walls without opening the drywall?
Yes. Drill-and-fill and injection foam are both done through small access holes that we patch afterward. The wall stays intact.
Is wall insulation worth it in Miami’s climate?
On CBS homes with direct afternoon sun exposure, yes. Walls are a big part of the heat gain. Call (218) 261-7714 for a written scope on your specific wall assembly.
Attic Cleaning & Rodent Proofing in Miami
Miami attics collect rat droppings, old nesting material, and years of dust that compress insulation and carry odor into the living space. Roof rats are the usual culprit, finding their way in through vents and gaps that never got sealed. We handle Attic Cleaning & Rodent Proofing as a sequence: clean out, sanitize, seal every entry point, then replace or top up insulation.
Attic Cleanout
Signs you need it
You hear scratching at night, find droppings in the insulation, or see rodent trails flattened across the attic floor.
What it costs in Miami
Attic cleanout in Miami runs $1.00 to $1.70 per square foot, with the price depending on how much debris and contamination is present.
How we do it
We remove all debris and contaminated insulation, bag it for disposal, and leave the attic empty and photographed before any new material goes in.
Rodent Proofing & Exclusion
Signs you need it
You’ve trapped rats but they keep coming back, or you can see daylight through eave gaps and vent screens.
What it costs in Miami
Rodent proofing and exclusion runs $350 to $900 for a typical Miami attic, covering vents, eave gaps, and plumbing penetrations.
How we do it
We seal every opening larger than a quarter with metal mesh or foam, replace damaged vent screens, and document each sealed point.
What Attic Cleaning & Rodent Proofing Costs in Miami
| Item | Typical range in Miami |
|---|---|
| Attic cleanout (per square foot) | $1.00 - $1.70 |
| Rodent proofing and exclusion | $350 - $900 |
| Sanitizing and decontamination | $200 - $500 |
How do rodents get into Miami attics?
Mostly through eave gaps, unscreened gable vents, and plumbing penetrations from the walls. We find the entry points during cleaning and seal them before re-insulating.
Do I need to replace insulation after rodent activity?
Usually yes. Rat urine and droppings contaminate the insulation, and no amount of sanitizing makes that material safe to keep. Call for a written assessment.
Home Energy Audit in Miami
A home energy audit in Miami is the fastest way to find out why your AC bill is high and your afternoon rooms are hot. We run a blower-door test, thermal imaging, and duct leakage testing, then hand you a written report with the readings and the recommended sequence of fixes. You can act on it or not, but you’ll know exactly what’s happening. We offer Home Energy Audit as a standalone service, with no obligation to hire us for the repairs.
Blower Door Test
Signs you need it
Rooms feel drafty, your energy bill spikes in summer, or you want a documented baseline before and after air sealing work.
What it costs in Miami
A standalone blower-door test in Miami runs $150 to $350, and it’s included when we do the full air sealing job.
How we do it
We mount the blower door in an exterior doorway, depressurize the home, and record the CFM50 number for your written report.
Thermal Imaging Inspection
Signs you need it
You can’t find the source of heat gain, or you suspect missing insulation in walls that were never opened.
What it costs in Miami
Thermal imaging as part of an audit adds $100 to $250, and it’s included in our full audit package.
How we do it
We scan walls, ceilings, and ducts with an infrared camera, then mark the readings on a floor plan you keep.
What Home Energy Audit Costs in Miami
| Item | Typical range in Miami |
|---|---|
| Blower door test (standalone) | $150 - $350 |
| Thermal imaging inspection | $100 - $250 |
| Full audit package (blower door, thermal imaging, duct test) | $400 - $750 |
What does a blower-door test tell me about my Miami home?
It gives you one number, CFM50, that tells you how much air your building envelope is losing. We publish before-and-after readings on every applicable job, so you see the actual change.
Do I have to buy insulation work after an energy audit?
No. The audit is a standalone service with a written report you keep. We’ll quote any recommended work, but the report is yours regardless.
Brands We Service in Miami
We install and service insulation from Knauf, Rockwool, and CertainTeed, with the materials stocked in our South Florida warehouse for fast turnaround across Miami. No proprietary product lock-in means we specify what the job needs, not what a brand rep pushed. See our brands for the full material list and typical lead times.
Pricing for Insulation in Miami, FL
| Service | Typical range in Miami |
|---|---|
| Spray foam insulation (open-cell, roof deck) | $1.80 - $2.50 per board foot |
| Spray foam insulation (closed-cell) | $2.80 - $4.00 per board foot |
| Blown-in cellulose (attic) | $1.10 - $1.80 per square foot |
| Blown-in fiberglass (attic) | $0.90 - $1.60 per square foot |
| Attic air sealing | $650 - $1,400 |
| Radiant barrier installation | $0.80 - $1.50 per square foot |
| Injection foam wall insulation | $2.50 - $4.00 per square foot |
| Attic insulation removal | $1.10 - $1.90 per square foot |
| Attic cleaning | $1.00 - $1.70 per square foot |
| Home energy audit (full package) | $400 - $750 |
What pushes price up in Miami is contamination, access, and HVHZ compliance. A rodent-damaged attic, a roof deck that needs an NOA-rated product, or a home with tight access all add labor. Every Topside Attic Insulation job starts with a written price before any work starts, and that price is flat: no surprises on the invoice.
Neighborhoods We Serve in Miami
We work across Miami daily, from the older CBS blocks of Shenandoah to the post-Andrew homes in Kendall. Typical response time across the area is same-day or next-day, depending on where the crew is finishing that morning.
- Coral Gables
- Coconut Grove
- Shenandoah
- Kendall
- Westchester
Service Area - Cities Near Miami
We also serve homeowners just outside Miami proper. Our crews regularly work in Miami Beach, FL, Hialeah, FL, Miami Gardens, FL, and Hollywood, FL, with the same written-price rule applying everywhere.
Serving Miami, FL - Our Local Coverage Area
We’re based in the Miami 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 Miami
Most Miami appointments happen same-day or next-day. When you call (218) 261-7714, a live person answers and schedules your visit. You’ll get a named technician and a text when they’re on the way, under Haven Standard.
It depends on the scope. Some insulation replacements and air sealing jobs are permit-exempt, but anything involving roof deck foam or structural changes usually needs a permit. We’ll tell you what your job requires and handle the paperwork.
We cover the full Miami area, from the urban core through the inner suburbs. If you’re within Miami-Dade County, we can schedule your written estimate. Call (218) 261-7714 to confirm your address.
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 Miami 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.