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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon64
    Verified insulation services reviews

Find Insulation pros in Key Biscayne

Avatar for Salto Angel Insulation Inc
Salto Angel Insulation Inc
5.0(
12
)

Serving Key Biscayne, FL and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Warranties offered

"The Team of Salto Angel Insulation Inc. knowledge, expertise and professionalism speaks for itself. It was evident that they take pride in their work. It was a pleasure working with them and I couldn’t be more satisfied with the results. If you’re considering insulation for your attic, look no further. I highly recommend them."
wine room (Close Cell)
Installing Spray Foam in Vinera
Attic Close Cell
Additional Photos
Additional Photos

+17

Response time2 days
13 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for ATLAS INSULATION, LLC
ATLAS INSULATION, LLC
4.7(
62
)

Serving Key Biscayne, FL and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"Atlas Insulation was very professional from the moment they went to my house to quote foam insulation to the moment of doing the work. Their guys are fenomenal and professional. I would definitely recommend them to anyone."
South Florida
South Florida
South Florida
South Florida
South Florida

+76

Response time2 days
Recommended by85%of homeowners
Avatar for Cool Shield
Cool Shield
5.0(
8
)

Serving Key Biscayne, FL and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Offers commercial services

"The insulation installation was completed quickly with great attention to detail and high-quality workmanship. Exceptional service was provided throughout, making this company a recommended choice for insulation needs. CANT RECOMMEND JOHNATHAN AND COOL SHIELD ENOUGH"
Response time2 days
Response rate98%
5 neighbors recently requested a quote
Avatar for NMC SPRAY SOLUTION, CORP
NMC SPRAY SOLUTION, CORP
5.0(
4
)

Serving Key Biscayne, FL and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"I had an amazing experience with this spray foam insulation company. From the first phone call, they were upfront, honest, and very knowledgeable. The crew showed up exactly when they said they would and walked me through the whole process before starting. They insulated my attic and part of my garage, and the difference was noticeable the same day ? the rooms stay cooler, and the AC doesn?t run nearly as much"
Spray foam
Spray foam
Response time1 day
7 neighbors recently requested a quote
Avatar for Attic Fanatics
Attic Fanatics
5.0(
2
)

Serving Key Biscayne, FL and surrounding areas

Approved

In business since 2014

Free estimates

Warranties offered

"Attic Fanatics did an outstanding job from start to finish! The team was professional, punctual, and explained every step of the process clearly. They removed the old insulation, sanitized, sealed air leaks, and then installed new insulation — everything was done with attention to detail and care for our home. What impressed me most was how clean they left the job site and how much cooler and more comfortable our home feels now. They even shared before-and-after photos so we could see the difference in our attic. It’s rare to find a contractor that goes above and beyond like this. I would highly recommend Attic Fanatics to anyone looking for attic insulation or ductwork — you won’t be disappointed!"
New Insulation
Removal
Covering the walls
Putting plastic over any of the customers belongings
Covering the stairs

+15

45 neighbors recently requested a quote
Recommended by50%of homeowners
Avatar for One Hour Air Conditioning & Heating of Miami
One Hour Air Conditioning & Heating of Miami
4.4(
13
)

Serving Key Biscayne, FL and surrounding areas

Approved

In business since 1987

Emergency services offered

Warranties offered

"They did an excellent job & were very professional. My air conditioner is like brand new again. I would highly recommend them to anyone. They also have a membership package for maintenance which is well worth it and I highly recommend that as well."
Testing Outdoor Unit
Testing Outdoor Unit
Greeting Clients
Working On Indoor Unit
Testing Indoor Unit

+7

47 neighbors recently requested a quote
Recommended by100%of homeowners
A Best Insulation, Inc.
4.3(
89
)

Serving Key Biscayne, FL and surrounding areas

In business since 2000

Free estimates

Warranties offered

"Aldo and his Team at A Best Insulation were very responsive and did a great job. They were especially helpful in terms of protecting our equipment & furniture and working around our schedules. They cleaned everything up when the job was complete and were very concerned about our safety, during and after the install. We have already noticed a dramatic difference in not having to keep our Air Conditioning set as low as we used to and less humidity in the house has made us much more comfortable! I highly recommend the Spray Foam Insulation done by A Best!"
Spray Foam Insulation
Spray Foam Insulation
Structural support to the roof deck
Spray Foam Insulation
Air and humidity infiltration stopped

+10

Recommended by96%of homeowners
Avatar for Koala Insulation of Fort Lauderdale
Koala Insulation of Fort Lauderdale
5.0(
13
)

Serving Key Biscayne, FL and surrounding areas

In business since 2020

Free estimates

Credit card accepted

"I would highly recommend koala insulation for any AC duct repair or replacement and insulation . I received several estimates and they were by far the fairest, very polite and professional and punctual."
Response time2 days
Recommended by53%of homeowners
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Insulation questions, answered by experts

It is usually possible to install insulation yourself, but it’s often better to hire an insulation professional. An experienced insulation pro can determine which type of insulation is best for your space and the R-value get the most value and comfort in your home. Certain types of insulation can cause skin, eye, and lung irritation, and a professional will have the equipment necessary to keep themselves safe and limit the effect on your indoor air quality after the installation. Certain types of insulation—like blown-in and loose-fill insulation—demand a professional for proper functionality and safe installation.

Insulating ducts prevent or significantly reduce condensation by reducing temperature differences between the duct surface and surrounding air. Proper insulation also minimizes sweating, improves energy efficiency, and prevents moisture damage. However, if humidity levels are unusually high or there are air leaks, additional measures like sealing ducts and using a dehumidifier may be needed.

A plastic vapor barrier should completely cover your basement to prevent water from penetrating through the walls. This typically goes before installing insulation to prevent moisture from building up and becoming trapped on the inside of your insulation, where it can collect and lead to mold damage. Installing insulation after the vapor barrier allows for any moisture to exit the walls for better ventilation.

In some cases, yes, insulating an unheated garage can lead to mold and mildew. The issue with insulating a garage is that the interior will warm up and cool down more slowly than the exterior air, which can cause condensation inside the space. Where there is moisture, there is likely to be mold and mildew over time. Installing a vapor barrier can help avoid moisture and mildew problems in an insulated garage.

The thickness of floor insulation will depend on the R-value you plan to achieve. R-value varies on the type of material as well as its thickness and density. Insulation materials with low R-values can be layered to match the value of denser materials. As long as your floor insulation is packed tightly, seals the area from drafts, and doesn’t prevent ventilation, it can be as thick (or thin) as you need.

The Key Biscayne, FL homeowners’ guide to insulation services

From average costs to expert advice, get all the answers you need to get your job done.