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Spray Foam Insulation in Williston, FL

Find top-rated spray foam contractors and save up to 30% on energy bills

Compare 3 verified spray foam insulation contractors serving Williston, Florida, backed by 12 customer reviews averaging 5.0★. Whether you're insulating a new build, retrofitting an existing home, or upgrading attic and crawl-space insulation, these pre-screened Williston contractors handle both open-cell and closed-cell spray foam. Homeowners here typically cut energy bills by around 30% — get free quotes and read verified reviews below.

💰 Spray Foam Savings Calculator for Williston

Homes in Williston typically cut energy use by 25%–35% with spray foam. Change the numbers below to fit your home.

Foam type
$1,188
Estimated annual savings
At about 30% off your energy bill
$5,100–$8,200
Rough install cost
Attic roofline, about 5.5" of open cell
4–7 years
Estimated payback
Install cost ÷ annual savings

These are estimates, not quotes. Actual savings vary based on home size, current insulation, energy rates, and climate conditions. Savings estimates are based on Department of Energy data for the Hot-Humid climate zone. Cost assumes the attic roofline (about 1.15× your home's square footage) at typical installed prices of $0.40–$0.65 per board foot for open cell and $1.00–$1.50 for closed cell; a two-story home has less roof and usually costs less. Get quotes from the contractors below for real prices.

Verified Contractors in Williston

R-Factor Spray Foam Solutions

⭐Specialist
📞 Call Now🌐 Visit Website

Direct: (352) 663-5905

5⭐
3 Google reviews

Recent Reviews:

F R★★★★★a year ago

Mr. Miller of R factor is a fantastic person to deal with. He was fantastic to speak with and answered all of my questions. His crew was professional and courteous and completed my project in one day. I had a 1500 sq ft crawl space of my wood frame home and I would not hesitate to use R factor again. He was more than willing to work with me on information for my permit as well, which to me speaks volumes on a professional who works with permitting. Happy as could be.

Brandon Wetzel★★★★★a year ago

These guys do great work! The owner is an awesome guy and stands by his work. I highly recommend them!

Joseph Thomas★★★★★a year ago

R-Factor Spray Foam Solutions transformed my attic in Gainesville with their expert insulation services. The crew was highly professional and completed the job swiftly, using top-quality spray foam that’s made a noticeable difference in my home’s energy efficiency. My utility bills have dropped, and the comfort level has greatly improved. I highly recommend their attic insulation services.

R-Factor Sprayfoam Solutions

⭐Specialist
📞 Call Now🌐 Visit Website

Direct: (352) 663-5905

5⭐
3 Google reviews

Recent Reviews:

Clive Black★★★★★a week ago

I highly recommend working with r factor, they did a 25 x 50 steel building using closed cell spray foam for me & Justin was great to work with, his crew showed up on time, finished when they said they would, they cleaned up after themselves & we're very professional, can't ask for much more than that

Ozzie Delgado, Jr.★★★★★7 months ago

Justin and his crew were absolutely AMAZING! They finished a large job for me in 2 days, left it all clean, and were some of the nicest, kindest, most professional contractors I’ve ever worked with. If you’re looking for an insulation specialist for any residential or commercial job, no need to do any further research. R-Factor is the spot. Don’t waste your time looking anywhere else. These dudes are the real deal! Can’t express how happy I am with my final product. God bless y’all!

Gregory Dejesus★★★★★a year ago

Magnum Spray Foam LLC

⭐Specialist
📞 Call Now🌐 Visit Website

Direct: (352) 812-1888

5⭐
6 Google reviews

Recent Reviews:

Jon Craig★★★★★9 months ago

Waylon was honest, hard-working, and did quality work. I trusted him by paying him early, and he still came back and finished the job perfectly. I highly recommend him. I was more than satisfied with the care, attention to detail, and the quality of his work. He even sprayed more foam than I expected in several areas. Above and beyond! The Citrus county building inspector was impressed too. His price was very competitive too. It was the best $10,000 I ever spent... (except for that engagement ring that helped hitch me to a total babe back in '99)!

Donna Woods★★★★★a year ago

I hired Magnum Spray foam to insulate my storage building. They were the ONLY company (out of 6 that I contacted) that stayed in communication with me (most of them I either didn't get any communication back OR it took them WEEKS to return my calls/emails). They showed up on the job when they said they would, did a great job, were clean and respectful and fairly priced. I would definitely hire them for future projects. GREAT contractor.

Jeca Siller★★★★★a year ago

One of the Most dedicated Owners. I have met. He will get the Job done and Right. Super Happy with his business One of the Best.

Frequently Asked Questions — Spray Foam Insulation in Williston

These are the questions Williston homeowners ask most about spray foam cost, R-value, and open- vs. closed-cell foam — with context for local pricing and roughly 30% typical energy savings. Compare the 3 verified Williston contractors above for exact quotes.

Is spray foam insulation a good choice in hot and humid climates like Williston?▼
Absolutely. Hot and humid climates like Williston, FL are actually where spray foam insulation delivers some of its best results. Closed-cell spray foam acts as both an insulation layer and a moisture/vapor barrier, preventing the humidity infiltration that causes mold, rot, and air conditioning inefficiency. Homeowners in FL typically see 20–35% reductions in cooling costs after installation. One important note: because spray foam creates a tight building envelope, proper mechanical ventilation is essential in humid climates to manage interior moisture from daily activities like cooking and bathing.
What type of spray foam is best for homes in Williston?▼
In hot and humid climates like Williston, FL, closed-cell spray foam is generally recommended for exterior walls, crawl spaces, and attics. Its high density creates a moisture barrier critical in humid environments. Open-cell foam can be used in interior walls for soundproofing and actually allows some vapor movement, which can be beneficial in certain wall assemblies. A qualified local contractor can assess your specific home and recommend the best approach.
Can spray foam insulation help reduce my AC bills in Williston?▼
Yes — significantly. Air conditioning accounts for the majority of energy costs in hot climates like Williston, FL. Spray foam seals all gaps and cracks that allow conditioned air to escape, which is the primary cause of high AC bills. Most homeowners in hot climates report 20–30% reductions in cooling costs after spray foam installation.
Is spray foam insulation worth the cost?▼
For most homeowners, yes. Spray foam creates an air-tight seal that traditional insulation cannot match, reducing energy bills by 15–35% annually. It also adds structural rigidity, acts as a moisture and vapor barrier, reduces outside noise, and can increase home resale value. The higher upfront cost compared to fiberglass is typically recovered within 3–7 years. One important note: because spray foam creates a very tight building envelope, proper mechanical ventilation is important to maintain healthy indoor air quality and prevent interior moisture buildup. This is typically handled by an Energy Recovery Ventilator (ERV) — a system that brings fresh outside air in while pushing stale air out, recovering the energy from the outgoing air so you don't waste what you paid to heat or cool — or a Heat Recovery Ventilator (HRV), which works similarly but is optimized for cold climates. A qualified contractor will assess whether your home needs ventilation upgrades as part of the installation.
How much does spray foam insulation cost in Williston, FL?▼
In Williston, FL and the surrounding area, spray foam insulation typically costs $1.00–$3.00 per square foot installed, depending on the type and your home's specifics. Open-cell foam runs $0.44–$0.65 per board foot, while closed-cell foam costs $1.00–$2.00 per board foot. A typical 2,000 sq ft home attic in Williston costs $2,000–$6,000. Most Williston homeowners recoup this investment within 3–7 years through energy savings of 15–35% annually.
What is the difference between open-cell and closed-cell spray foam?▼
Open-cell spray foam is softer, less dense, and less expensive. It expands significantly and is ideal for interior walls, attics, and soundproofing. Closed-cell spray foam is denser, stronger, and provides a moisture barrier — making it better for exterior applications, crawl spaces, and areas prone to flooding or humidity. Closed-cell also has a higher R-value per inch (R-6 to R-7 vs R-3.5 to R-4 for open-cell). One key difference: open-cell foam allows some vapor movement, while closed-cell acts as a vapor barrier — an important consideration for your home's ventilation needs.
How long does spray foam insulation last?▼
Spray foam insulation is one of the most durable insulation options available, with a lifespan of 80+ years when properly installed. Unlike fiberglass batting which can sag and settle over time, spray foam maintains its shape and insulating properties indefinitely. It will typically outlast the building it is installed in.
How do I find a qualified spray foam insulation contractor in Williston, FL?▼
When searching for a spray foam contractor in Williston, FL, look for ones who are licensed, insured, and have verifiable reviews. Spray foam requires specialized equipment and training — improper installation can cause off-gassing, adhesion failure, or fire hazards. Ask for references, verify their insurance, and get at least 2–3 quotes. A qualified Williston contractor will also assess your home's ventilation needs — a tightly sealed spray foam installation requires adequate mechanical ventilation to prevent moisture and indoor air quality issues. FoamMatch pre-screens all listed contractors in Williston for licensing and insurance so you can compare verified professionals in your area.
How long does spray foam installation take?▼
Most residential spray foam jobs take 1–2 days depending on the size of the area. A standard attic takes 4–8 hours. After spraying, the foam cures within 24 hours, though most contractors recommend waiting 24–72 hours before occupying the space due to off-gassing during the curing process.
Does spray foam insulation need to be replaced?▼
No — spray foam insulation does not need to be replaced under normal circumstances. Unlike fiberglass insulation which degrades over time, spray foam maintains its R-value and air sealing properties for the life of the building. The only reasons to remove or replace spray foam are water damage, renovation work, or improper original installation.

Spray Foam Contractors Near Williston, FL

Not finding the right fit in Williston? Many spray foam contractors travel to nearby towns. These communities within about 60 miles all have verified contractors listed.

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