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Out of Network Insulation Contractors in Washington, DC

KMB Contracting Services, Inc.
1130 International Parkway Suite 149
Fredericksburg, VA 22406
tropical Air Co.
904 Maritime Ct.
Springfield, VA 22152
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Frequently Asked Questions

What is insulation?

Insulation is material that provides a barrier within a home’s walls, ceilings, and floors to regulate temperature and noise. If your home gets overly hot in the summer and cold in the winter, it’s likely not insulated properly.

Insulation efficiency is measured by R-value, which determines how resistant different types of insulation are to heat flow (or energy loss). R-values are measured by inch of thickness. The higher the R-value, the better the performance and the higher the price.

How much does insulation cost?

Our project data lists insulation costs between $1,400 and $6,300, but your final price will depend on the type of insulation you choose, its R-value, and how much you need.

Fiberglass insulation: $0.30 – $1.50
Blown-in insulation: $1 – $2
Spray foam insulation: $0.50 – $2
Radiant insulation: $0.20 – $1
Rigid board insulation: $0.25 – $1

Luckily, insulation is one of the best investments you can make in your home—it has an ROI of at least 100%, meaning you’ll likely make back what you spend in a few years or so.

What is insulation made of?

Insulation is made of many different materials, which can also impact the R-value needed for energy efficiency.

Fiberglass: The most common insulation material made from glass. Fiberglass is a skin and lung irritant, so you’ll need to wear gloves and clothing when working with fiberglass insulation.
Cellulose: Made from recycled paper products, plus borate for fire and insect resistance.
Foam: Made from polystyrene, polyisocyanurate, or polyurethane plastic. You can also install cement-based foam insulation using rigid foam boards.
Mineral wool: Made of fire-resistant rock wool, a mix of natural materials, or slag wool, made from a molten metal product.
Natural fibers: Made from various recycled natural materials, including cotton, sheep’s wool, and straw.

Where is insulation in a house?

If your attic is unfinished or you’ve ever demolished an interior wall, you might notice batt or spray foam insulation between the studs. Putting insulation between your walls and floors helps keep your home comfortable and your energy costs down. In addition to walls and attics, you can install insulation in your garage, in floors above vented crawl spaces, and basements.

Garage Insulation: $0.50 to $1.25 per square foot
Floor and crawl space insulation: $1 to $5 per square foot
Basement insulation: $1.50 to $2.50 per square foot
Wall insulation: $1 to $4 per square foot
Attic insulation: $1,500 to $6,000
Roof insulation: $1,500 to $4,500 or more

What are the different types of insulation?

There are a few types of home insulation, and they all are made of different materials— most commonly, fiberglass, cellulose, and foam. Insulation includes these materials in the following forms:

Loose-fill: Also called “blown-in,” loose-fill is sprayed into wall cavities, attics, and other oddly-shaped areas using special equipment. This insulation is usually made of fiberglass, cellulose, or mineral wool.
Batts: An affordable insulation blanket best for unfinished spaces, such as between framing, studs, or joists. They come in pre-cut sections suitable for DIY installation and are mostly made from fiberglass, though other versions are also available.
Rolls: Similar to batt insulation, but comes in rolls. Its make-up leaves less chance for gaps between sections and is more efficient than other types.
Foam board: One of the most popular insulation types that can be used almost anywhere in your home. Foam boards also have a high R-value.
Spray foam: Expands and hardens to fill gaps, small and large. Can be closed-cell or open-cell, but closed-cell has a higher R-value, making it more expensive per square foot.
Radiant barriers: Does not reduce heat flow but directs heat away from the home instead. Radiant barriers are DIY-friendly and affordable, but they won’t be as effective in the winter months.

Top Insulation Projects

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Overall Rating:

Washington Insulation Contractors are rated 4.9 out of 5 based on 83 reviews of 3 pros.

The HomeAdvisor Community Rating is an overall rating based on verified reviews and feedback from our community of homeowners that have been connected with service professionals. See individual business pages for full, detailed reviews.

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Recent Job Requests for Insulation Contractors in Washington, DC

NewProject: Soundproofing
Location: Washington, DC
Date: 03/06/23
Request Stage: Ready to Hire
Desired Completion Date: Timing is flexible
Type of Noise: Loud music
Soundproofing Locations: Floors
Soundproofing Locations: Walls
Soundproofing Locations: Windows
Location: Home/Residence
Comment: This is for a backroom of an art gallery that we plan to turn into an event space. Some of these events will have Djs playing loud music. Right now all the walls are hard cement/concrete.
NewProject: Spray Foam Insulation Install
Location: Washington, DC
Date: 03/05/23
Area Description: No framing exposed - walls to remain intact
Nature of Project: Insulation for existing home
Location of Installation: Ceiling
Location: Home/Residence
Location of Installation: Non-masonry walls
Desired Completion Date: Timing is flexible
Request Stage: Planning & Budgeting
NewProject: Soundproofing
Location: Washington, DC
Date: 03/04/23
Residence Type: Apartment building
Location: Home/Residence
Desired Completion Date: Timing is flexible
Request Stage: Ready to Hire
Type of Noise: Plumbing pipes and exhaust ducting
Soundproofing Locations: Floors
NewProject: Soundproofing
Location: Washington, DC
Date: 03/02/23
Residence Type: Condominium
Location: Home/Residence
Desired Completion Date: Timing is flexible
Request Stage: Planning & Budgeting
Type of Noise: Floor/stairs squeaking
Soundproofing Locations: Walls
Type of Noise: Loud music
Soundproofing Locations: Floors
Comment: I have a ground floor condo and can hear impact noises (things dropped, footsteps, squeaky floorboards) from the unit above me as well as some loud conversations. I am looking at options to soundproof my ceilings.
NewProject: Batt, Rolled or Reflective Insulation Install
Location: Washington, DC
Date: 03/02/23
Nature of Project: Insulation for existing home
Location: Business
Desired Completion Date: More than 2 weeks
Request Stage: Planning & Budgeting
Type of Insulation: Reflective or radiant barrier
Location of Installation: Floor
Comment: 15000sq ft of tile removal and installation what's average cost for the project
Project: Blown-in Insulation Install
Location: Washington, DC
Date: 03/01/23
Request Stage: Planning & Budgeting
Desired Completion Date: Timing is flexible
Nature of Project: Insulation for existing home
Location of Installation: Attic
Location of Installation: Ceiling
Location: Home/Residence
Comment: I would like to get an estimate for Install or Upgrade Blown-In Insulation
Project: Blown-in Insulation Install
Location: Washington, DC
Date: 02/28/23
Request Stage: Ready to Hire
Desired Completion Date: Timing is flexible
Location: Home/Residence
Comment: I would like to get an estimate for installing insulation the the attic.
Project: Spray Foam Insulation Install
Location: Washington, DC
Date: 02/27/23
Nature of Project: Repair/Replace existing insulation
Location: Home/Residence
Desired Completion Date: Timing is flexible
Request Stage: Ready to Hire
Area Description: No framing exposed - walls to remain intact
Location of Installation: Ceiling
Location of Installation: Attic
Comment: We would like to air seal and insulate our rowhouse attic, which currently has an insufficient amount of blown in insulation. Would also like to add a storage area there during the process.
Project: Blown-in Insulation Install
Location: Washington, DC
Date: 02/24/23
Request Stage: Ready to Hire
Desired Completion Date: Timing is flexible
Location: Home/Residence
Comment: I would like to get an estimate for Install or Upgrade Blown-In Insulation zip code where the job needs to be done, 20032
Project: Soundproofing
Location: Washington, DC
Date: 02/20/23
Residence Type: Condominium
Location: Home/Residence
Desired Completion Date: Timing is flexible
Request Stage: Ready to Hire
Type of Noise: Exterior noise (traffic, airplanes, neighbors, etc.)
Soundproofing Locations: Walls
Soundproofing Locations: Windows
Comment: I’m looking to sound proof my condo. Main issue is outside noise due to poorly installed windows and my upstairs neighbor.
Project: Spray Foam Insulation Install
Location: Washington, DC
Date: 02/18/23
Location: Home/Residence
What type of insulation do you want?: Spray foam
Desired Completion Date: More than 2 weeks
Request Stage: Ready to Hire
Comment: Add spray foam inside the walls of all exterior, above ground walls
Project: Blown-in Insulation Install
Location: Washington, DC
Date: 02/18/23
Nature of Project: Insulation for existing home
Location: Home/Residence
Desired Completion Date: Timing is flexible
Request Stage: Planning & Budgeting
Location of Installation: Ceiling
Location of Installation: Roof
Location of Installation: Masonry walls
Location of Installation: Foundation walls
Location of Installation: Floor
Location of Installation: Attic
Location of Installation: Non-masonry walls
Project: Spray Foam Insulation Install
Location: Washington, DC
Date: 02/17/23
Nature of Project: Insulation for existing home
Location: Home/Residence
Desired Completion Date: Timing is flexible
Request Stage: Ready to Hire
Area Description: No framing exposed - walls to remain intact
Location of Installation: Non-masonry walls
Location of Installation: Attic
Comment: We live in an old house. We're pretty sure the wall insulation has deteriorated. Also need recommendations on attic insulation.
Project: Blown-in Insulation Install
Location: Washington, DC
Date: 02/17/23
Nature of Project: Not sure
Location: Home/Residence
What type of insulation do you want?: Blown-in
Desired Completion Date: Timing is flexible
Request Stage: Ready to Hire
Approximately how many square feet is the attic?: Less than 500 sq. ft.
Comment: We want to update the insulation for our crawl space. It is not accessible from our house but is accessible from the roof if you bring a tall ladder or go thru our neighbor's crawl space.
Project: Blown-in Insulation Install
Location: Washington, DC
Date: 02/16/23
Nature of Project: Insulation for existing home
Location: Home/Residence
Desired Completion Date: Timing is flexible
Request Stage: Ready to Hire
Location of Installation: Ceiling
Location of Installation: Attic
Comment: Need insulation blown inceiling
Project: Batt, Rolled or Reflective Insulation Install
Location: Washington, DC
Date: 02/15/23
Nature of Project: Insulation for existing home
Location: Home/Residence
What type of insulation do you want?: Batt, rolled or reflective
Desired Completion Date: Timing is flexible
Request Stage: Ready to Hire
Area of Home: Masonry walls
Comment: water damage is coming from existing ducts that had never been insulated. the damage is current in our living room where the ducts extend from the closet system in the adjacent hall. the ceiling drywall will need to be cut into and then have the insulation installed. would also like someone to replace drywall after.
Project: Blown-in Insulation Install
Location: Washington, DC
Date: 02/14/23
Location of Installation: Foundation walls
Other Services Selected: Insulating hot water pipes
Request Stage: Planning & Budgeting
Desired Completion Date: Within 1 week
Nature of Project: Insulation for existing home
Location of Installation: Non-masonry walls
Location: Home/Residence
Comment: I would like to get an estimate for 20032
Project: Spray Foam Insulation Install
Location: Washington, DC
Date: 02/14/23
Request Stage: Ready to Hire
Desired Completion Date: Timing is flexible
Location: Home/Residence
Comment: I would like to get an estimate for Flat Roof foaming insulation installation to stop the leak. Needs to be done as soon as possible.
Project: Batt, Rolled or Reflective Insulation Install
Location: Washington, DC
Date: 02/13/23
Location: Home/Residence
What type of insulation do you want?: Batt, rolled or reflective
Desired Completion Date: More than 2 weeks
Request Stage: Planning & Budgeting
Comment: I just purchased a condo and realized that the walls are incredibly thin. Even the smallest noises in my home are audible from the hallway. I’m hoping to sound proof my walls, close any gaps and cracks around the doors, and make it so that even when I have lots of friends over and music is playing, my neighbors will not hear any noise.