The Best Insulation Contractors in Key West, FL

Compare the highest-rated insulation professionals in Key West, Florida. All contractors are licensed, insured, and verified through our rigorous screening process.

#1

All Thermo Insulation, Inc.

4.8
(150 reviews)
Verified

A highly-rated, family-owned and operated insulation specialist serving the entire Florida Keys for over two decades. They are known for their expertise in both residential and commercial projects, with a strong focus on energy efficiency and solutions tailored to the harsh marine environment. They handle everything from audits to installation and are well-versed in local codes.

106600 Overseas Hwy, Marathon, FL 33050 (Primary location serving the Keys, including Key West)

Specialties & Features

Spray foam insulation
Blown-in insulation
Insulation removal and replacement

Business Information

Years in Business:20 years
Licensed:Yes
Insured:Yes
#2

Koala Insulation of South Miami

4.9
(200 reviews)
Verified

As part of a national brand with a strong local franchise, Koala brings a corporate standard of service and training to South Florida and the Keys. They emphasize a comprehensive approach, including energy audits and air sealing, to maximize the effectiveness of their insulation solutions. Their service area explicitly includes the Florida Keys.

8861 SW 131st St, Miami, FL 33176 (Services Key West from this main hub)

Specialties & Features

Energy efficiency audits
Air sealing services
Blown-in attic insulation

Business Information

Years in Business:10 years
Licensed:Yes
Insured:Yes
#3

A Plus Insulation & Spray Foam

4.7
(80 reviews)
Verified

A specialized contractor focusing heavily on spray foam applications, which are highly effective for the air-sealing and moisture-control needs of Key West homes. They are praised for their technical knowledge and professional crews. While based further north, they service large projects throughout South Florida, including the Keys.

1739 NW 1st Ct, Boca Raton, FL 33432 (Services the broader South Florida region, including Key West for qualified projects)

Specialties & Features

Spray foam insulation
Crawl space encapsulation
Attic insulation installation and upgrade

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes

Why These Are the Top Insulation Contractors in Key West

** The insulation market in Key West is characterized by a high demand for quality but is served by a limited number of highly specialized regional contractors. The competition level is moderate; while there aren't dozens of local options, the companies that do serve the area are typically established, professional, and knowledgeable. **Average Quality:** The quality of service is generally high, as contractors must be well-versed in dealing with the unique challenges of the Florida Keys, including combating humidity, preventing mold, and meeting strict wind-borne debris and flood zone building codes. **Typical Pricing:** Pricing is premium compared to mainland averages. This is due to the "island premium" for all services (travel time, cost of living), the specialized materials required (e.g., closed-cell spray foam is common for its moisture barrier properties), and the complexity of retrofitting older, historic Conch houses common in Key West. Homeowners should expect a higher investment, with projects often ranging from several thousand to tens of thousands of dollars, justified by significant long-term energy savings and improved home comfort in the extreme climate.

High Ratings

4.7+ star average from verified customer reviews

Fully Licensed

All contractors are properly licensed and insured

Proven Experience

10+ years average experience in the industry

Local Experts

Familiar with Key West regulations and climate

Frequently Asked Questions About Insulation in Key West

Get answers to common questions about insulation services in Key West, Florida.

1What type of insulation is best for my Key West home to combat the intense heat and humidity?

In Key West's hot, humid, and salt-air environment, spray foam insulation (especially closed-cell) is often the top recommendation. It provides a superior air and moisture barrier compared to traditional materials like fiberglass batts, which can trap moisture and lose effectiveness. This not only improves energy efficiency for year-round AC use but also helps prevent mold growth and strengthens the building envelope against tropical storms.

2How much does insulation installation typically cost in Key West, and are there any rebates?

Costs in Key West are influenced by high demand, material transport, and the specialized nature of moisture-resistant products, with whole-home projects often ranging from $3,000 to $10,000+. While Florida Power & Light (FPL) offers some general energy efficiency rebates, specific insulation incentives can be limited. It's best to consult with a local contractor who is up-to-date on current FPL programs and can provide a precise, free estimate for your home's specific needs.

3When is the best time of year to have insulation installed in Key West?

The ideal time is during the drier months, typically from late fall through early spring (November to April), outside of the peak hurricane and rainy season. This allows for better attic and crawl space access and helps ensure new materials are not exposed to heavy rain during installation. However, professional local contractors work year-round and can schedule projects to minimize weather disruptions.

4What should I look for when choosing an insulation contractor in the Florida Keys? **Question:** What should I look for when choosing an insulation contractor in the Florida Keys?

Always verify they are licensed, insured, and have extensive local experience with Monroe County and Key West building codes, which have strict requirements for wind resistance and flood zones. Look for proven expertise in handling the unique challenges of historic Conch houses and modern coastal construction. Check for strong reviews, ask for local references, and ensure they conduct a thorough energy audit or assessment before providing a quote.

5My older Key West home has no insulation in the walls. Is it worth the cost and disruption to add it?

For historic homes, the decision balances energy savings with preservation. While adding wall insulation can significantly reduce cooling costs and improve comfort, it requires careful techniques like injection foam to avoid damaging original siding or plaster. A reputable local contractor can assess your home's structure, discuss less invasive options like attic and floor insulation first, and help you understand the potential return on investment in our high-cooling-cost environment.