Spray Foam Insulation Question

Discussion in 'Insulation and Radiant Barriers' started by Johnny Miller, Jan 14, 2019.

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  1. Jan 14, 2019 #1

    Johnny Miller

    Johnny Miller

    Johnny Miller

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    I am going to get bids on spray forma insulation for our crawl space as well as the walls.

    I want the space between the floor joists to be foamed. Also the walls have insulation in them now. I want to have them put insulation in the walls as well.

    Has anyone done this and if so were the benefits of doing worth it?
     
  2. Jan 14, 2019 #2

    joecaption

    joecaption

    joecaption

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    With that little info impossible to know what to do.
    No location in your profile.
    Crawl space or basement under the house?
    There's no way to "add" foam insulation to a wall that's already insulated.
     
  3. Feb 8, 2019 #3

    WindowsonWashington

    WindowsonWashington

    WindowsonWashington

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    Do you have conditioned air to supply to the crawl once you insulate it?
     
  4. Feb 8, 2019 #4

    Sparky617

    Sparky617

    Sparky617

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    With a sealed crawlspace, you need to seal the ground to keep moisture out, insulate the walls, close off the vents and add conditioned air to the crawlspace. You don't need to keep it as warm as above but you need to circulate air down there. Google "conditioned crawlspace" for more details. www.buildingscience.com has a lot of good information.
     

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