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TRUSTED BY ROCKVILLE, MD HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon430
    Verified insulation services reviews

Find Insulation pros in Rockville

Avatar for Prudent Homes
Prudent Homes
4.7(
238
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade+2 more

Serving Rockville, MD and surrounding areas

Approved

In business since 2002

Free estimates

Warranties offered

"Prodent Homes did an excellent job with our attic remediation. They removed the old insulation, sanitized and re-insulated the entire attic. The owner David was easy to communicate. The crew lead Jose was very experienced and communicated well. The job was done professionally. We are happy with the results and will use them again if we have another insulation job."
36 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Koala Insulation of Washington DC
Koala Insulation of Washington DC
5.0(
14
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeSpray Foam Insulation - Install

Serving Rockville, MD and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

Here at Koala Insulation of Washington DC, we pride ourselves on our professionalism, as well as our ability to complete every job to the homeowner's total satisfaction. We never leave a job unfinished, or a homeowner not 100% satisfied with our level of service. We handle insulation work in Washington DC and the surrounding areas - Call today!\n\n

Project Photos
Project Photos
14 neighbors recently requested a quote
Avatar for Terra Insulation
Terra Insulation
4.9(
7
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Rockville, MD and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

"Great! Job was complete .... removal of existing 50+ year old insulation, air sealing attic, baffle installation, installed 18 inches new fiberglass blown insulation, and new whole-house fan. Job started and completed as proposed. Crew on-time, quietly performed their work, and left spaces clean when done. Definitely worth the cost as noticeable improvement in second floor temperature and humidity readings."
Owens Corning ProPink R-49 Blown-In Insulation. Our most popular product
These vents help your attic circulate air. With attics reaching over 120 degrees in the summer these are very important. They prevent mold and increase the lifetime of your insulation. Most other contractors miss installing these.
Look at the difference! Our foam is fire-rated which allows us to air seal around penetrations that contractors never could before.
Most homes have penetrations all over there attic. Imagine trying to blow up a balloon with a bunch of holes. It will never fill up. Now imagine trying to blow up your house with air conditioning and heating with a bunch of holes in the attic. It will never fill up.
Recessed can lights are notorious for leaking air. Recessed can light covers help with air-sealing your living space and prevent fires.

+1

Response time3 days
3 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Founders Insulation
Founders Insulation
4.9(
17
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Rockville, MD and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"I had a wonderful experience with Founders Insulation. They were extremely easy to work with. It was easy to schedule an appointment, the gentleman who came out was knowledgeable and polite, and I felt that I received good information and they did not try to sell me something I did not need. Their quote was excellent. The work was scheduled and completed quickly. The installation team was courtesy, thorough, and knew their stuff. They were respectful of my home and went above and beyond. I highly recommend this company."
Exterior Walls
Exterior Walls
Roof line
Exterior Walls
Exterior Walls

+11

Response time12 hrs
289 neighbors recently requested a quote
Recommended by75%of homeowners
Avatar for RetroFoam of Philadelphia
RetroFoam of Philadelphia
5.0(
22
)
Spray Foam Insulation - InstallInjection Insulation - Install

Serving Rockville, MD and surrounding areas

Approved (Corporate)

In business since 2023

Free estimates

Warranties offered

"We are extremely satisfied with the whole process of our house being insulated. First we had the walls done, and then a couple weeks later we had our attic insulated. The crew were so nice, friendly, and knowledgeable. We are very satisfied with everything. Thank you, everyone."
RetroFoam Wall Insulation
Installing RetroFoam
RetroFoam with Siding
RetroFoam with Brick
Response time1 day
Response rate100%
122 neighbors recently requested a quote
Avatar for Elite Thermal East
Elite Thermal East
4.3(
105
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeSpray Foam Insulation - Install

Serving Rockville, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Credit card accepted

"Chad was very helpful, informative and gave us exactly what was needed and asked for our ceiling project. Not one complaint. Job was completed on time, work area cleaned, insulation had the desired effect. Not once complaint - Thank you Elite Thermal for a stress free job! Its a rare experience in construction projects!!"
Cellulose Blown Insulation - Rem/Repl Before/After
Cellulose Blown Insulation - Before/After
Cellulose Blown Insulation - Before/After
Fiberglass Batt - Before/After
Fiberglass Batt - Remove & Replace - Before/Af

+5

Response time1 day
Response rate95%
78 neighbors recently requested a quote
Avatar for Home Genius Exteriors
Home Genius Exteriors
4.9(
435
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or Upgrade

Serving Rockville, MD and surrounding areas

Approved

In business since 2004

Free estimates

Credit card accepted

"I was impressed with the quality and skill of the crew, they knew exactly what to do and the result was excellent. I was extremely impressed with the quality of the insulation, and feel much more comfortable with my home! The foreman was excellent, very skilled, and the turn out was outstanding!"
Roofing
Roofing
Roofing
Roofing
Roofing

+77

Recommended by86%of homeowners
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Insulation questions, answered by experts

In Rockville, insulation upgrades offer immediate benefits like improved indoor comfort, quieter living spaces, and reduced drafts—especially during humid summers and chilly winters. Over time, you’ll notice lower energy bills, less strain on your HVAC system, and enhanced indoor air quality. These projects also boost home value, increase thermal efficiency, and help protect against rising energy costs and unpredictable local weather.

Helpful?

In Rockville, insulation maintenance varies by type. Fiberglass and blown-in insulation should be checked yearly for settling, moisture, or gaps, especially in attics and crawl spaces. Spray foam needs annual inspections for cracks or pest intrusion. Cellulose insulation may require topping off every few years. Across all types, monitor for air leaks and schedule a professional energy audit every 5-7 years to maintain peak performance.

Helpful?

Before starting an insulation project in Rockville, schedule a professional energy audit to identify air leaks and insulation gaps. Address any existing moisture, mold, or pest issues, and check if electrical upgrades are needed. Apply for available local rebates, clear access to attics or crawl spaces, and book your contractor early—especially in peak seasons—to ensure your project stays on schedule and avoids unexpected setbacks.

Helpful?

For a smooth insulation project in Rockville, confirm if permits are needed and gather multiple quotes from local professionals familiar with the area’s climate. Schedule a home energy audit to identify specific needs, address any moisture or ventilation issues, and clear attic or crawl space access. Planning during spring or fall helps avoid weather-related delays, and keeping records supports rebate or tax credit applications.

Helpful?

Completing an insulation service project in Rockville can significantly enhance your home’s value and resale appeal. Local buyers appreciate energy-efficient features, especially with Rockville’s seasonal temperature swings. Upgraded attic insulation and improved thermal efficiency are strong selling points, often leading to faster sales. Additionally, local energy rebates and the potential for lower utility bills make well-insulated homes more attractive in the Rockville market.

Helpful?

The Rockville, MD homeowners’ guide to insulation services

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