Top Insulation Contractors in Washington, DC
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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
Frequently Asked Questions
What is insulation?
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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?
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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?
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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?
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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?
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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
HomeAdvisor Community 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, DCDate: 03/06/23Request Stage: Ready to HireDesired Completion Date: Timing is flexibleType of Noise: Loud musicSoundproofing Locations: FloorsSoundproofing Locations: WallsSoundproofing Locations: WindowsLocation: Home/ResidenceComment: 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, DCDate: 03/05/23Area Description: No framing exposed - walls to remain intactNature of Project: Insulation for existing homeLocation of Installation: CeilingLocation: Home/ResidenceLocation of Installation: Non-masonry wallsDesired Completion Date: Timing is flexibleRequest Stage: Planning & BudgetingNewProject: Soundproofing Location: Washington, DCDate: 03/04/23Residence Type: Apartment buildingLocation: Home/ResidenceDesired Completion Date: Timing is flexibleRequest Stage: Ready to HireType of Noise: Plumbing pipes and exhaust ductingSoundproofing Locations: FloorsNewProject: Soundproofing Location: Washington, DCDate: 03/02/23Residence Type: CondominiumLocation: Home/ResidenceDesired Completion Date: Timing is flexibleRequest Stage: Planning & BudgetingType of Noise: Floor/stairs squeakingSoundproofing Locations: WallsType of Noise: Loud musicSoundproofing Locations: FloorsComment: 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, DCDate: 03/02/23Nature of Project: Insulation for existing homeLocation: BusinessDesired Completion Date: More than 2 weeksRequest Stage: Planning & BudgetingType of Insulation: Reflective or radiant barrierLocation of Installation: FloorComment: 15000sq ft of tile removal and installation what's average cost for the projectProject: Blown-in Insulation Install Location: Washington, DCDate: 03/01/23Request Stage: Planning & BudgetingDesired Completion Date: Timing is flexibleNature of Project: Insulation for existing homeLocation of Installation: AtticLocation of Installation: CeilingLocation: Home/ResidenceComment: I would like to get an estimate for Install or Upgrade Blown-In InsulationProject: Blown-in Insulation Install Location: Washington, DCDate: 02/28/23Request Stage: Ready to HireDesired Completion Date: Timing is flexibleLocation: Home/ResidenceComment: I would like to get an estimate for installing insulation the the attic.Project: Spray Foam Insulation Install Location: Washington, DCDate: 02/27/23Nature of Project: Repair/Replace existing insulationLocation: Home/ResidenceDesired Completion Date: Timing is flexibleRequest Stage: Ready to HireArea Description: No framing exposed - walls to remain intactLocation of Installation: CeilingLocation of Installation: AtticComment: 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, DCDate: 02/24/23Request Stage: Ready to HireDesired Completion Date: Timing is flexibleLocation: Home/ResidenceComment: I would like to get an estimate for Install or Upgrade Blown-In Insulation zip code where the job needs to be done, 20032Project: Soundproofing Location: Washington, DCDate: 02/20/23Residence Type: CondominiumLocation: Home/ResidenceDesired Completion Date: Timing is flexibleRequest Stage: Ready to HireType of Noise: Exterior noise (traffic, airplanes, neighbors, etc.)Soundproofing Locations: WallsSoundproofing Locations: WindowsComment: 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, DCDate: 02/18/23Location: Home/ResidenceWhat type of insulation do you want?: Spray foamDesired Completion Date: More than 2 weeksRequest Stage: Ready to HireComment: Add spray foam inside the walls of all exterior, above ground wallsProject: Blown-in Insulation Install Location: Washington, DCDate: 02/18/23Nature of Project: Insulation for existing homeLocation: Home/ResidenceDesired Completion Date: Timing is flexibleRequest Stage: Planning & BudgetingLocation of Installation: CeilingLocation of Installation: RoofLocation of Installation: Masonry wallsLocation of Installation: Foundation wallsLocation of Installation: FloorLocation of Installation: AtticLocation of Installation: Non-masonry wallsProject: Spray Foam Insulation Install Location: Washington, DCDate: 02/17/23Nature of Project: Insulation for existing homeLocation: Home/ResidenceDesired Completion Date: Timing is flexibleRequest Stage: Ready to HireArea Description: No framing exposed - walls to remain intactLocation of Installation: Non-masonry wallsLocation of Installation: AtticComment: 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, DCDate: 02/17/23Nature of Project: Not sureLocation: Home/ResidenceWhat type of insulation do you want?: Blown-inDesired Completion Date: Timing is flexibleRequest Stage: Ready to HireApproximately 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, DCDate: 02/16/23Nature of Project: Insulation for existing homeLocation: Home/ResidenceDesired Completion Date: Timing is flexibleRequest Stage: Ready to HireLocation of Installation: CeilingLocation of Installation: AtticComment: Need insulation blown inceilingProject: Batt, Rolled or Reflective Insulation Install Location: Washington, DCDate: 02/15/23Nature of Project: Insulation for existing homeLocation: Home/ResidenceWhat type of insulation do you want?: Batt, rolled or reflectiveDesired Completion Date: Timing is flexibleRequest Stage: Ready to HireArea of Home: Masonry wallsComment: 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, DCDate: 02/14/23Location of Installation: Foundation wallsOther Services Selected: Insulating hot water pipesRequest Stage: Planning & BudgetingDesired Completion Date: Within 1 weekNature of Project: Insulation for existing homeLocation of Installation: Non-masonry wallsLocation: Home/ResidenceComment: I would like to get an estimate for 20032Project: Spray Foam Insulation Install Location: Washington, DCDate: 02/14/23Request Stage: Ready to HireDesired Completion Date: Timing is flexibleLocation: Home/ResidenceComment: 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, DCDate: 02/13/23Location: Home/ResidenceWhat type of insulation do you want?: Batt, rolled or reflectiveDesired Completion Date: More than 2 weeksRequest Stage: Planning & BudgetingComment: 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.