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Find Insulation pros in Markham

Avatar for Comfenergy, LLC
Comfenergy, LLC
4.6(
54
)
Insulation - Install or Upgrade

Serving Markham, 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."
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+68

Response time1 day
Response rate100%
30 neighbors recently requested a quote
Avatar for Home Genius Exteriors
Home Genius Exteriors
4.9(
430
)

Serving Markham, VA and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"These guys were great. Allen met me at the door with a firm handshake told me what they were about to do and if I had any questions just ask. Leo was just as professional during insulation and got the job done in 3 hours. Dylan kept me up to speed during both projects and was very helpful. Easy reccomendation."
Windows
Windows
Windows
.
Siding

+9

Response time9 hrs
Response rate100%
Recommended by89%of homeowners
Avatar for Kelvins insulation
Kelvins insulation
5.0(
9
)
Insulation - Install or Upgrade

Serving Markham, VA and surrounding areas

In business since 2016

Free estimates

Credit card accepted

"This guy called promptly to schedule an in home consultation and came promptly the next morning. I received a courtesy call from him saying that he was running 10 minutes behind schedule. When he got here, he was friendly, he evaluated my attic and determined that no insulation was needed. I tried to push him a little to say that we might need a little more insulation up there since that particular room gets colder than others but he insisted that adding insulation wouldn't help. I think others might have tried to get some work out of the visit, but not these guys. I would recommend them based on their honesty, fairness, and integrity."
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+15

Recommended by100%of homeowners
HomeLand Insulation, LLC
4.6(
8
)

Serving Markham, VA and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"Homeland insulation had the best price among the 4 estimates that I got. Mike obviously knows about house construction, as he was able to tell me things about my house that I did not know. For every issues that I posed to him, he came up with a workable and cost-effective solution. Mike inspected the entire attic and meticulously sealed all floor penetrations by pipes, flues, lighting & fan fixtures including 14 recessed lights. He installed baffles to insure ventilation after insulation. After Mike has blown in the insulation, we had close to R60 (or 20) evenly for the entire attic. In addition, Mike built a hatch above the garage at my request. He did all of the above with obvious competence and with a pleasant customer-focused attitude. I do recommend them."
Recommended by87%of homeowners
Avatar for Evergreen Electric LLC
Evergreen Electric LLC
4.9(
36
)
Insulation - Install or Upgrade

Serving Markham, VA and surrounding areas

In business since 2009

Free estimates

Emergency services offered

"I called Evergreen Electric and setup an appointment for the next day to perform what I figured would be a couple small jobs and to receive an estimate to run cable into new rooms. The original appointment was delayed because of a power outage on another job, but speaking to Josh on the phone, he was willing to come by as soon as he was finished even though it would have been well into the evening. I told him the following day would work fine and we rescheduled the appointment.
Josh arrived the next day and examined our situation. Our house is nearly 40 years old and it turns out the problems were much deeper than I thought. Josh crawled into the attic and rewired the junction boxes that were not just loose but had previously been wired incorrectly. He also spent well over an hour attempting to diagnose why our breaker was tripping without much of a load on it. He was very thorough in his troubleshooting. He replaced the breaker with a higher amp version and the problem is fixed, but he also indicated there is likely more faulty wiring running through the attic buried under the insulation and someone should come back to assess the entire electrical system.
Josh was very courteous and professional and answered all of my questions. After spending about 2.5 hours with us, I was expecting a large bill. I was very pleased when he told me he would only be billing me for one hour.
About 30 minutes after he left, we noticed that a light in the hallway would not turn off. I called to report it and Evergreen responded immediately. Josh came back right away and fixed the problem. He even replaced the light switch free of charge. It is nice to see a company that stands by its work and acts so quickly when something is wrong.
I would highly recommend Evergreen Electric. They are prompt, thorough, and stand by their work.


"
Recommended by100%of homeowners
Contractors Unlimited Co
5.0(
10
)
Insulation - Install or Upgrade

Serving Markham, VA and surrounding areas

In business since 1989

Emergency services offered

"We had a horrendous situation with a basement floor installation that went wrong leaving our house full of fumes, and a week later we discovered our basement was contaminated by asbestos in the process.  When we called Bill and Contractors Unlimited, they were extremely responsive.  Although other companies gave us bids, Bill was able to work his schedule to fit us in weeks sooner than the others.  Although the cost was a bit more, that saved us money because we were displaced and could not even go into our house because of the fumes.  CU set up negative air machines to replace the air, they followed asbestos abatement laws, they cleaned every item that could be salvaged in our house.  They even saved more than we thought which really reduced our overall expense.  Bill and his team were extremely professional, friendly, helpful, and really went out of their way to ease our stress from this situation.  At the end of their process, Bill arranged for a air quality inspection which we happily passed - able to return home.  I would gladly recommend Contractors Unlimited for asbestos abatement.  I just wish we had called them before the floor guys  created such a disaster.  Thank you Bill!
"
Recommended by100%of homeowners
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FAQs for insulation service projects in Markham, VA

Old insulation should be removed when it shows damage, contamination, or heavy deterioration. If you notice water stains, rodent droppings, mold, or large gaps, plan on taking it out to protect your home’s energy performance and indoor air quality. Removing compromised material eliminates health hazards, cuts energy loss, and sets the stage for a safer, more efficient attic—all while keeping utility bills in check.

R-value measures how well insulation resists heat flow—the higher the number, the better it slows heat transfer. The right R-value keeps your home warmer in winter and cooler in summer, saving energy year-round. Match the rating to your climate zone and have a pro verify performance over time, because moisture or settling can lower R-value and cut efficiency.

Attic insulation can stay in place for 80 to 100 years, but its performance often drops after the first 15. As dust, moisture, or mold build up, the material loses R-value and allows heat to escape. Schedule periodic inspections so a pro can tell you when replacement makes sense—helping you keep energy bills down and indoor comfort up.

You can over-insulate an attic. Beyond the recommended R-value, extra layers don’t add efficiency and can trap moisture, leading to mold or reduced performance. A local insulation pro can measure current levels, confirm the right target for your climate, and advise on any adjustments so you avoid future energy or maintenance headaches.

Insulation can be damaged by mold, pests, water leaks, or accidental electrical contact. When the material is compromised, it loses R-value and can introduce health hazards. Removing and replacing affected sections restores efficiency, while routine inspections from a qualified pro help you catch problems early and keep your attic safe and energy-smart.

The Markham, VA homeowners’ guide to insulation services

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

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