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TRUSTED BY LONGWOOD, FL HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon232
    Verified insulation services reviews

Top-Rated Insulation pros in Longwood - Updated Nov 2026

Avatar for Capstone Insulation LLC
Capstone Insulation LLC
5.0(
40
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Longwood, FL and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Credit card accepted

"This work was performed in Groveland, FL, 34736. Capstone Insulation was great. The VP came out, went through the attic, and described the work to be done. This included thermal imaging to find air transfer locations, air sealing between the attic and living spaces, installing baffles over the inside soffit vents, installing and air sealing recessed lighting covers (for fire safety), installing new insulation, and pre- and post-insulation air flow testing. The installation crew was very competent and friendly. They performed the initial air flow test and all the pre-insulation work on day 1. They came back the next day to install the insulation and perform the final air flow test. The VP provided me with a video of the Day 1 work and a video of the final outcome. All of this work was done at a price point that I thought was reasonable (about $2/sq. ft.)."
Insulation
Top Plate or top of inner wall
Air escaping
Electrical penetration
R10

+4

Response time2 days
Response rate91%
27 neighbors recently requested a quote
Avatar for JMS Construction Painting and Remodel, LLC
JMS Construction Painting and Remodel, LLC
4.7(
256
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or Upgrade

Serving Longwood, FL and surrounding areas

Approved

In business since 2016

Free estimates

Credit card accepted

JMS EnergyWise Insulation has been operating in and around Deland FL since 2016. We are a thermal insulation Energy Efficiency and air conditioning contractor. We specialize in a multitude of aspects saving you time and money with our One-Stop company. We strive to go above and beyond. We verify all work with photo documentation before during and after. As well we request no money up front until the entire project is complete. Offering free in-house financing at no cost because we want to help. Call today and schedule your free Energy Efficiency consultation. We look forward to meeting you and earning your business. Come see why We are one of home advisors top rated insulation contractors in the State of Florida with a near-perfect rating score. check out our reviews and see why hundreds of others near you are going with us. we care about our work and our customers. Our methods work. We guarantee it. Call us today and see how we can save you money and make you more comfortable. \n

Recommended by94%of homeowners
Avatar for All American Insulation
All American Insulation
4.9(
40
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or Upgrade

Serving Longwood, FL and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"Jeff was great to work with and I highly recommend him to anyone looking for insulation work. He was knowledgeable, honest, and performed high quality work. I will be using Jeff again in the future for more insulation work!"
Blown Insulation
Radiant Barrier Blown Insulation Combo
Blown Insulation
Blown Insulation
R-30

+131

Response time1 hour
Response rate96%
Recommended by97%of homeowners
Avatar for DL Insulation
DL Insulation
4.8(
34
)
Blown-In Insulation - Install or Upgrade

Serving Longwood, FL and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

"Fair price an on-time service. But I should have checked the job..... there were a few spots in the attic that did not get any insulation. (not the garage..... that does not need insulation..... but a few spots over heated space were not covered). But their price was better than other estimates. I also requested the chemical that detracts rats and mice..... I do not know if it was included...... I hope so."
Attic blown insulation
Attic blown insulation
Attic blown insulation
Maikol camacho
Maikol camacho

+20

Response time7 hrs
Response rate100%
64 neighbors recently requested a quote
Avatar for Deli Brothers Insulation LLC
Deli Brothers Insulation LLC
5.0(
27
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Longwood, FL and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Emergency services offered

"Deli Brothers Insulation came to my home and did an absolutely marvelous job from start to finish. From the moment they arrived, their professionalism was clear—they were punctual, polite, and ready to get to work. Not only did they complete the insulation quickly and efficiently, but they also kept the work area spotless, which I really appreciated. Their team was extremely knowledgeable, answering all of my questions and explaining the process so I felt informed every step of the way. It’s rare to find a company that delivers both top-quality workmanship and outstanding customer service, but Deli Brothers Insulation truly exceeded my expectations. I would highly recommend them to anyone looking for reliable, clean, and expert insulation services."
Response time10 hrs
Response rate98%
35 neighbors recently requested a quote
Florida Attic Insulation Pros, LLC
4.7(
59
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeSpray Foam Insulation - Install

Serving Longwood, FL and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Dennis and his crew are awesome! I called Dennis because I had condensation coming from an electrical outlet in one bedroom. In addition, my pantry and closets would always feel humid and warmer than the rest of the house. He came out and diagnosed the problem in an honest, professional manner: it turns out the builder of my house never did the air sealing under the attic insulation, so he took care of that. I also had him do wall-injected insulation on the wall that is hit by the sun all day, as well as add more attic insulation for energy efficiency. Dennis is responsive, knowledgeable, and won't sell you stuff you don't need. I'll be recommending him to neighbors who have houses built by the same builder, and who probably have the same problem I did."
Response time1 day
35 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for All American Energy
All American Energy
4.5(
75
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Longwood, FL and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Small jobs welcome

"My house has never been properly insulated and Jeff was very kind he knows my tragic losses and was very comforting and bless me. I told him I would recommend your company to anybody in my neighborhood who has not had insulation like myself. I’ve been here close to 40 years and I will continue to honor your name for quality work and professionalism. That deserves a commercial I recoup my expenses on my commercial with you people."
Radiant & Blown
Radiant and Blown
Fiberglass blown insulation
Fiberglass blown insulation
Fiberglass blown insulation

+2

Response time3 hrs
Response rate98%
53 neighbors recently requested a quote
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Insulation FAQs, answered by experts

Fiberglass is considered a favorite garage insulation choice due to its combination of affordability, ease of installation, and overall effectiveness. Fiberglass provides good thermal resistance, helping regulate garage temperatures and minimize heat transfer. Additionally, fiberglass is moisture-resistant, reducing the risk of mold or mildew formation.

One of the biggest disadvantages of glass garage doors is that they are not the best at insulating your garage. In the summer, heat can enter through the glass, while in the winter, heat can escape through the glass, increasing your electricity and gas bills as you crank up your HVAC unit. You can help mitigate the poorer insulation by investing in insulated glass and insulating your garage.

Closed-cell foam may come with a higher price tag, but it’s worth the investment because of its strength and durability. This material offers excellent thermal and moisture resistance, contributing to its long life span. Its construction enhances energy efficiency, which can lead to reduced heating and cooling costs over time.

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.

STC (Sound Transmission Class) is a rating that describes how well a building material or assembly blocks airborne sound. A higher STC rating means less noise will pass through the material, providing better sound reduction. This rating system applies to various building components, including windows, doors, flooring, drywall, and insulation.

For context, a typical single-pane window has an STC rating of around 25 (where normal conversations are audible), while a well-sealed, double-pane window can exceed STC 45 (blocking loud speech and most music). It is important to note that for some products, like soundproofing drywall, the STC rating refers to the entire wall system, not just the individual panel.

Additionally, STC ratings are most effective for measuring sound reduction at mid-to-high frequencies, such as human speech, and may not accurately reflect how well a material blocks low-frequency sounds like bass music or thunder. Because of these factors, it is recommended to consult a professional to determine the right STC-rated materials for your specific soundproofing needs.

The Longwood, FL homeowners’ guide to insulation services

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