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  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon200
    Verified insulation services reviews

Top-Rated Insulation pros in South Riding - Updated Nov 2026

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

Serving South Riding, VA 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."
28 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for USA Insulation of Fairfax County
USA Insulation of Fairfax County
5.0(
6
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade+1 more

Serving South Riding, VA and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

USA Insulation of Fairfax County provides energy-efficient insulation solutions designed to make homes more comfortable and cost-effective year-round. As part of the trusted USA Insulation network, we specialize in premium injection foam insulation, attic insulation, air sealing, band joist and crawl space solutions. Our team helps homeowners reduce energy loss, lower utility bills, and improve indoor comfort with minimally invasive installation methods. We are committed to quality workmanship, honest recommendations, and outstanding customer service. From consultation to completion, USA Insulation of Fairfax County delivers reliable results that help protect your home and maximize energy savings.

Band Joist
Band Joist
Band Joist
Injection Foam
Injection Foam

+3

23 neighbors recently requested a quote
Avatar for DMV Insulation
DMV Insulation
5.0(
6
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade+2 more

Serving South Riding, VA and surrounding areas

Approved

In business since 2023

Free estimates

Warranties offered

"DMV Insulations is a great company to work with. The company focuses on your personal needs, always on time, and great customer service! Mark was able to answer any questions I had, and provided me with useful information. I would recommend this company to anyone with attic insulation needs."
Fiberglass Blow-in
Sanctuary insulation install.
Save energy, reduce waste, and lower your carbon footprint.
Loose fill insulation install.
Additional Photos

+5

Response time1 day
Response rate100%
7 neighbors recently requested a quote
Avatar for Founders Insulation
Founders Insulation
5.0(
20
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeSpray Foam Insulation - Install

Serving South Riding, VA and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"HIGHLY RECOMMENDED! GREAT WORK AND STELLAR CUSTOMER SERVICE! I had an excellent experience with Founders Insulation and owner Brian Handy. Brian's a great guy—knowledgeable, honest, responsive, and easy to work with. He clearly explained what was needed, what was optional, and why. He showed exactly where the insulation and air-sealing problems were, giving me complete confidence in his recommendations. There was no pressure to add unnecessary work, and everything stayed within budget. Work included removing old attic insulation, extensive air sealing, insulating the attic to R-60, sealing the attic hatch, adding insulation to vaulted ceilings, and spray-foaming problem areas and a cantilever. The team did an incredible job. I was especially impressed with how thoroughly they cleaned up afterward. Most importantly, I've noticed a significant decrease in my heating and A/C costs since the work was completed. Excellent communication, quality work, fair pricing, and no surprises."
Exterior Walls
Exterior Walls
Roof line
Exterior Walls
Exterior Walls

+11

Response time12 hrs
221 neighbors recently requested a quote
Recommended by63%of homeowners
Avatar for Comfenergy, LLC
Comfenergy, LLC
4.6(
54
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade+2 more

Serving South Riding, VA and surrounding areas

Approved

In business since 2011

Free estimates

Warranties offered

"From initial contact with their sales department we've had a great experience, Corey did an excellent job of taking pictures and showing the problems in our attic. Their level of communication from emails to phone calls was precisely correct by contacting me when needed and not too much with pictures detailing each solution and its associated cost. On the first work day their crew called ahead of time, arrived promptly and came prepared with masks, plastic sheeting, full body outfits and cloth covering for the stairs. In just over 6 hours they had cleaned up the entire attic removing bad sub-floor and other insulation, laid out the foundation for building a large deck space and placed part of the first layer of materials down. They also sealed the attic door along with some of the air vents and ceiling fans. They completed insulating my front porch overhang and cleaned up all of their mess very well. Painters tape was used on corners where they we’re most likely to bump into it for protection and plastic sheeting was setup precisely where needed to keep dust off of our hallway things next to the attic entrance. Overall it was a great first day and they even spotted an issue from a previous vendor who failed to properly connect some of their duct work together (which was the original cause of my daughter’s room temperature being so hard to control the temperature and not easy to spot). The only complaint I have is that while I fully expected the need to finish our attic sub-floor, remaining layers of TruSoftTM Cellulose on the main floor and encapsulate the duct lines with Polyurethane Spray Foam all before finishing with blown-in insulation, they left a key piece incomplete. When leaving they left the duct work leading from our main trunk line to my daughter’s room off. This left a hole in the main trunk line reducing heat in all upstairs rooms but most important is that nothing was connected to my daughter’s room. So around 6:00am she woke up coughing as we noticed the upstairs was around 56 degrees. Overall a simple heads up would have solved everything as we have space heaters, however I did not look into the attic when they left so that’s my fault for not knowing a key piece of the duct line was missing. Based on the overall work complete I would still very much recommend them as Robert (onsite team lead) was very good at communicating and the crew we’re all quite friendly. Their work will last for the lifetime of my house and has already added value to the sale price. In the end they made a really nice attic deck leaving me with plenty of useable storage space. While this is not the cheapest company, the quality and knowledge that I never need to worry about my attic again is certainly worth it."
Additional Photos
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+68

Response time1 day
Response rate100%
40 neighbors recently requested a quote
Avatar for Discount Energy Services
Discount Energy Services
4.3(
89
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeInsulation - Install or Upgrade

Serving South Riding, VA and surrounding areas

Approved

In business since 1984

Free estimates

Warranties offered

"After my call to Discount Energy Services, I knew who was coming and when to evaluate my attic insulation. The estimate was prepared on-site with pricing. The workers arrived and knew exactly what they were to accomplish, which they confirmed with me. They prepared the entire path with clean drop cloths and created a plastic drape around my attic stairs. The foreman was glad to explain any aspect of the procedure. My attic was upgraded to R-49 and the difference is notable."
Additional Photos
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+2

Response time7 hrs
Response rate100%
22 neighbors recently requested a quote
Avatar for Comfenergy
Comfenergy
3.9(
50
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade+1 more

Serving South Riding, VA and surrounding areas

Approved

In business since 2013

Free estimates

Warranties offered

"They wanted to inject very expensive sealant into the ducts to seal the seams. The company I hired used insulating tape over the seams instead, for a greatly reduced price. The total price difference in their proposal and the company that I hired was about $4500."
Attic before
Attic after
Historic Waterford Home
Historic Plaque
Crawl space before

+6

Response time1 day
111 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for ROI Construction LLC
ROI Construction LLC
4.1(
18
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade+2 more

Serving South Riding, VA and surrounding areas

Approved

In business since 1974

Free estimates

Warranties offered

"We had a great experience with ROI Construction sales representative David Burke. David was very knowledgeable about ROI's porducts and services. We look forward to getting our attic insulation project completed and will provide a more thorough review at that time. Thanks, Tim"
Additional Photos
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Additional Photos

+19

53 neighbors recently requested a quote
Recommended by90%of homeowners
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Showing 1-10 of 95
Insulation FAQs, answered by experts

Selling a house with spray foam insulation can be challenging due to concerns about improper installation or its compatibility with the home's structure. If not applied correctly, spray foam can cause issues such as moisture buildup, cracking, or damage to wiring and plumbing. If the insulation didn't cure correctly, there are also flammability concerns. Removing or repairing this type of insulation can pose risks as well.

On average, insulating an attic costs about $2,500, with a typical range of $1,500 to $3,500. The final price often depends on the attic's size, with costs generally falling between $1 to $3 per square foot. For example, insulating a 1,800-square-foot attic would likely cost between $1,800 and $5,400.

If the project involves removing old insulation, this can add an average of $900 to the total cost, bringing a full removal and reinsulation project to around $3,000.

Several factors influence the overall cost:

  • Insulation Type: Prices per square foot vary significantly by material.

  • Reflective: $0.50–$1.50

  • Blown-in: $1–$4

  • Batt: $2–$4

  • Loose-fill: $2–$5

  • Spray foam: $2–$5

  • Structural insulated panels (SIPs): $4–$7

  • Project Complexity: Factors like sealing air leaks, poor attic accessibility, and required inspections can add to the cost.

  • Removal Issues: The discovery of mold, asbestos, or pests during the removal of old insulation can substantially increase the price.

Yes, PEX pipes should be insulated in certain situations. While insulation is not always necessary for pipes running through insulated interior or external walls, it is recommended for any pipes located in uninsulated rooms, unheated areas, or outside, especially in regions with cold winters. The primary reason is to prevent freezing. Although PEX is more resistant to cracking from freezing than other materials, repeated freezing and thawing can weaken the pipes over time, increasing the risk of a burst.

If the outside temperature drops below 20 degrees Fahrenheit, it will take around six hours for your pipes to freeze—and they might even burst. That’s why keeping your mobile home’s temperature around 50 to 60 degrees Fahrenheit is necessary, even if you’re leaving it vacant for the winter. In addition, having ample skirting around the mobile home's underbelly will help keep pipes insulated during the winter. 

The level of insulation is determined by both the material and the thickness of the door. Some garage door materials (such as wood) have natural insulating capabilities, while other materials (such as metal) do not. No matter the material, two-layer and three-layer garage doors have a higher R-value than single-layer garage doors, as insulation is fitted between the panels. 

The South Riding, VA homeowners’ guide to insulation services

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