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Find Batt, rolled or reflective insulation install or upgrade pros in Rockville

Avatar for Prudent Homes
Prudent Homes
4.7(
236
)

Serving Rockville, MD and surrounding areas

Approved

In business since 2002

Free estimates

Warranties offered

"Following discovery and repair of a roof leak, I needed to have my existing attic insulation removed, and new insulation installed. I received several quotes, and decided to choose Prudent based on David's timely and professional communications, honest appraisal of what the job would entail, and competitive pricing. David and his team did an excellent job throughout the process. They arrived on time, used drop cloths and plastic covers to keep everything clean, walked me through the process and progress, and shared pictures of areas I couldn't easily see or get to myself. At the end of the job, they thoroughly cleaned up all debris and left the house and property as they had found it. We discovered a minor issue later that evening, and David sent a member of the team out to fix it the next day. Excellent communication and work - very happy with the end result, and would hire again in a heartbeat."
28 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Founders Insulation
Founders Insulation
4.9(
17
)

Serving Rockville, MD and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"The company did a good job replacing old insulation in our attic. There was a communication hick-up but the project manager we worked with - Jamie - was able to correct and resolve the issue."
Exterior Walls
Exterior Walls
Roof line
Exterior Walls
Exterior Walls

+11

Response time12 hrs
274 neighbors recently requested a quote
Recommended by75%of homeowners
Avatar for Atlas Home Energy Solutions LLC
Atlas Home Energy Solutions LLC
4.9(
105
)

Serving Rockville, MD and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

"Between Brad K., the company’s support team, and the crews who come out to do the job and execute the work, you cannot select a better company to help you make your home energy efficient and reduce your utility bills by insulating the house and sealing your duct work. As for Brad K., the job begins with Brad coming to your house and conducting an Energy Audit. This gives everyone a far better understanding as to what needs to be done in your home. And, Brad concludes with conducting a “ Test Out,“ to see the improvements. Pepco will offer you a partial rebate for the work completed and they are very satisfied with a 20% reduction. As for us, we hammered Brad with dozens of questions over the course of time before and after we ratified an agreement. In every case, Brad was extraordinarily responsive especially with him being burdened performing audits throughout the day and being offsite. We couldn’t be happier with Brad’s performance. The same goes for the inside team including Jeff, Gordon and Ashley. And, everyone of the guys and their team leads who came to the house not only focused on executing their expertise, but were also very customer focused. In our case, the “test out demonstrated a 36% reduction,“ and Brad believes the partial rebate will be even greater. A Little Constructive Feedback Here: Be sure to ask and fully understand what needs to be done prior to the crews arriving. We had three teams over three days (not in a row) and learned at that moment what more needed to be done to fully finish the job. This will minimize to virtually eliminate any further challenges for the crews and yourselves. However, the job was completed. Over the next 45 days or so, after our utility bill fully cycles, we look forward to seeing the results of Atlas’s work and the reduction in our utility bills. Atlas Home Energy Solutions is Your Best Buy. We are certainly available to provide any further references. RichandJames Peterson Silver Spring, MD (301) 592-1616 Email: rich@recruitcom.com"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+16

Response time3 days
13 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Koala Insulation of Washington DC
Koala Insulation of Washington DC
5.0(
14
)

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
57 neighbors recently requested a quote
Avatar for Home Genius Exteriors
Home Genius Exteriors
4.9(
1,107
)

Serving Rockville, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2004

Free estimates

Emergency services offered

"Home Genius came by and installed my insulation into my attic and I couldn’t be more thrilled and happy with the results! I noticed an initial change with the first temperature drop of the winter! And I wasn’t cold one bit! Angel And Michael were both professional and knowledgeable and were available for any questions or concerns that I had! Thank you to Home Genius for my new roof and my new insulated attic! I would love to recommend them to all family and friends!"
WINDOWS
WINDOWS
WINDOWS
WINDOWS
SIDING

+73

Response time4 hrs
Response rate93%
3529 neighbors recently requested a quote
Avatar for Terra Insulation
Terra Insulation
4.9(
7
)

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 Complete Home Solutions, LLC
Complete Home Solutions, LLC
3.9(
84
)

Serving Rockville, MD and surrounding areas

Approved

In business since 2002

Free estimates

Warranties offered

"They found 2" insulation in my attic, and they recommended me to air seal and insulate with 11" cellulose. I felt the difference from the very first day"
 Stone Front of Addition
 Kitchen
 .
 After
Screened Porch and Deck

+93

Response time1 day
13 neighbors recently requested a quote
Recommended by74%of homeowners
Avatar for Atlas Home Energy Solutions
Atlas Home Energy Solutions
4.1(
34
)

Serving Rockville, MD and surrounding areas

Approved

In business since 2009

Free estimates

Credit card accepted

"I hired Atlas Home Energy Solutions to remove old insulation and replace it with the foam technique. However, I ran into numerous unexpected problems due to a slow leak from old pipes. It took awhile to sort out. Atlas Home Energy Solutions gave me lots of expert advice. They were willing to come out and review the situation. They were also willing to reschedule and wait until another contractor dealt with the water issue and its ensuing problems. They helped me make some difficult decisions before they could insulate the crawl space. When it was ready for them to come and insulate the area they bumped their schedule forward to get it done. This company did sterling work. Their expertise and professionalism were outstanding. They really know what they are doing and guided me through a more protracted process than originally envisioned. I would highly recommend them to anyone."
Visual Inspection of all Areas of your Home
Attic Insulation and Air Sealing
Infrared Camera Inspection
Attic Spray Foam
Blower Door Whole House Air Leakage Test

+11

Response time1 day
Recommended by87%of homeowners
Avatar for Diaz Painting & Renovations LLC
Diaz Painting & Renovations LLC
4.9(
124
)

Serving Rockville, MD and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"The crew did a great job!, They corrected imperfections in the drywall and painted several coats . Completed project by installing flooring and and stairs. Would definitely rehire for future projects!"
bathroom remodeling
bathroom remodeling
bathroom remodeling
bathroom remodeling
bathroom remodeling

+62

Response time2 days
Response rate98%
5 neighbors recently requested a quote
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FAQs for batt, rolled or reflective insulation install or upgrade projects in Rockville, MD

Batt insulation excels in vertical installations because it remains firmly in place and delivers consistent thermal performance. Blown-in insulation performs exceptionally in spaces such as attics, efficiently filling gaps in irregular areas. 

Employing both insulation types according to their strengths enhances your home’s overall energy efficiency and comfort by providing a tailored solution for every space.

Start by measuring the square footage of the space, then match that area with the insulation thickness you need to hit your target R-value. Add a buffer for waste and odd-shaped spots so every cavity is covered. 

Once you have a rough count, run it past a local insulation pro—their on-site advice will fine-tune the numbers and help you avoid costly miscalculations.

Old insulation that is dry, intact, and mold-free does not require removal before adding new insulation; stacking new insulation over it maintains effective thermal performance and boosts energy efficiency. 

If the insulation is damp, moldy, or deteriorated, removal is necessary to eliminate health risks and ensure maximum effectiveness of the new layer. A professional insulation contractor will assess your situation and recommend the most effective solution.

Installing insulation in an average-sized home using batts or boards requires five to 12 hours. Using spray foam or blown-in insulation requires two to five hours. These timeframes are determined by the area’s size, accessibility, and whether old insulation must be removed. 

Complex projects and hard-to-reach spaces demand extra time. Hiring an experienced insulation professional ensures that the installation is completed efficiently and correctly.

Insulation is measured by R-value, which defines how effectively it resists heat flow. A higher R-value provides superior thermal resistance, ensuring your home remains warm in winter and cool in summer. 

Choosing the correct R-value is essential for maximizing energy efficiency and comfort, and it directly impacts long-term utility savings. Professional guidance determines the optimal R-value for your specific climate.

The Rockville, MD homeowners’ guide to batt, rolled or reflective insulation installs or upgrades

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