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    Out of Network Insulation Contractors in Williamstown, MA

    Frequently Asked Questions

    What is insulation?

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    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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    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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    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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    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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    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

    Overall Rating:

    Williamstown Insulation Contractors are rated 5.0 out of 5 based on 7 reviews of 1 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 Williamstown, MA

    • NewProject: Install or Upgrade Batt, Rolled or Reflective Insulation
      Location: Williamstown, MA
      Date: 09/27/22
      Location: Home/Residence
      Desired Completion Date: Timing is flexible
      Request Stage: Planning & Budgeting
    • Project: Install Spray Foam Insulation
      Location: Williamstown, MA
      Date: 08/15/22
      Nature of Project: Insulation for new construction/addition
      Location of Installation: Masonry walls
      Location of Installation: Non-masonry walls
      Location of Installation: Roof
      Location: Business
      Desired Completion Date: More than 2 weeks
      Request Stage: Ready to Hire
      Area Description: Wall framing is exposed / unfinished
    • Project: Install or Upgrade Batt, Rolled or Reflective Insulation
      Location: Williamstown, MA
      Date: 01/24/22
      Nature of Project: Repair/Replace existing insulation
      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
      Property Owner: Yes
      Area of Home: Foundation walls
      Are you interested in financing?: No
      Comment: I would like to get an estimate for insulate your basements.
    • Project: Install or Upgrade Batt, Rolled or Reflective Insulation
      Location: Williamstown, MA
      Date: 10/05/21
    • Project: Install or Upgrade Batt, Rolled or Reflective Insulation
      Location: Williamstown, MA
      Date: 02/22/21
      Location: Home/Residence
      Desired Completion Date: Timing is flexible
      Request Stage: Ready to Hire
      Property Owner: Yes
      Are you interested in financing?: No
      Comment: I would like to get an estimate for having a few things done, painting and insulation.
    • Project: Install or Upgrade Batt, Rolled or Reflective Insulation
      Location: Williamstown, MA
      Date: 09/10/20
      Nature of Project: Insulation for new construction/addition
      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
      Property Owner: Yes
      Area of Home: Attic
      Area of Home: Ceiling
      Are you interested in financing?: No
      Comment: We found squirrel and mice nests (and their excrements) in our attic (second floor) insulation. Insulations need to be replaced. Our house is a cape style. We want to know how hard to replace the insulations? Should we replace the drywall in order to replace the insulation? How much will it cost? Thank you.
    • Project: Install or Upgrade Blown-In Insulation
      Location: Williamstown, MA
      Date: 10/08/19
      Nature of Project: Insulation for existing home
      Location of Installation: Floor
      Other Services Selected: Energy saving radiant barrier protection
      Location: Home/Residence
      Desired Completion Date: Timing is flexible
      Request Stage: Ready to Hire
      Property Owner: Yes
      Are you interested in financing?: No
      Comment: 22x17 room with a 24 in crawl space to fill with blown in insulation in the floor
    • Project: Install or Upgrade Blown-In Insulation
      Location: Williamstown, MA
      Date: 02/18/19
      Nature of Project: Repair/Replace existing insulation
      Location: Home/Residence
      Desired Completion Date: Timing is flexible
      Request Stage: Ready to Hire
      Property Owner: Yes
      Are you interested in financing?: No
      Comment: I would like to get an estimate for blown in insulation in the attic
    • Project: Install Spray Foam Insulation
      Location: Williamstown, MA
      Date: 02/05/19
      Nature of Project: Insulation for existing home
      Location of Installation: Ceiling
      Location of Installation: Non-masonry walls
      Location: Home/Residence
      Desired Completion Date: More than 2 weeks
      Request Stage: Planning & Budgeting
      Property Owner: Yes
      Area Description: Wall framing is exposed / unfinished
      Are you interested in financing?: No
      Comment: flat roof and exposed walls relatively small area. Soy based available?
    • Project: Install Spray Foam Insulation
      Location: Williamstown, MA
      Date: 08/12/18
      Nature of Project: Insulation for new construction/addition
      Location: Home/Residence
      Desired Completion Date: 1 - 2 weeks
      Request Stage: Ready to Hire
      Area Description: Wall framing is exposed / unfinished
      Comment: 19/30 12ft high cooler 2/4 walls
    • Project: Install or Upgrade Blown-In Insulation
      Location: Williamstown, MA
      Date: 09/28/15
      Nature of Project: Insulation for existing home
      Location of Installation: Ceiling
      Location of Installation: Floor
      Location of Installation: Foundation walls
      Location: Home/Residence
      Desired Completion Date: More than 2 weeks
      Request Stage: Ready to Hire
      Property Owner: Yes
      Comment: I do not believe that there is any insulation in this home. I need an estimate before I can recommend the work to the owner. I am the caretaker.
    • Project: Install or Upgrade Blown-In Insulation
      Location: Williamstown, MA
      Date: 09/24/15
      Nature of Project: Insulation for existing home
      Location: Home/Residence
      What type of insulation do you want?: Blown-in
      Desired Completion Date: 1 - 2 weeks
      Request Stage: Planning & Budgeting
      Property Owner: Yes
      Area of Home: Floor
      Comment: Mobile home increase R value
    • Project: Install or Upgrade Blown-In Insulation
      Location: Williamstown, MA
      Date: 02/25/13
      Nature of Project: Insulation for new construction/addition
      Location of Installation: Attic
      Location of Installation: Ceiling
      Location of Installation: Non-masonry walls
      Location: Home/Residence
      Desired Completion Date: Within 1 week
      Request Stage: Planning & Budgeting
      Comment: Need an estimate for cellulose insulation, new construction addition in Williamstown MA. Need approx 640 square feet 2 x 6 walls new construction (min R-20 cellulose); approx 420 square feet cathedral ceiling (R-30 min cellulose), approx 350 sq ft flat attic ceiling (R-40 cellulose min)
    • Project: Install or Upgrade Blown-In Insulation
      Location: Williamstown, MA
      Date: 12/09/12
      Nature of Project: Insulation for new construction/addition
      Location of Installation: Attic
      Location of Installation: Floor
      Location of Installation: Roof
      Other Services Selected: Interior sound proofing
      Interested in Green Alternatives: Yes
      Location: Home/Residence
      Desired Completion Date: Within 1 week
      Request Stage: Ready to Hire
      Comment: foam floors,batt walls,batt/blown ceilings

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