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Thread: Cost per Square Inch...

  1. #1
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    Cost per Square Inch...

    I have a company that blew in insulation in my home attic for a set price. I am now asking them for a quote to blow in insulation into my garage attic. They said their prices went up but would honor the price they gave me on doing the house.

    This is what I have figured so far and hoped someone could confirm or correct my thoughts to make sure I am paying the same "price".

    My home got 13 inches of insulation blown in. My garage will get 10 inches. Here is what I have come up with...

    Home Blown in cost: $2,000
    Square Feet: 1356
    Inches of Insulation: 13

    Home Contract
    $2,000
    / 1356 sq ft
    / 13 Inches
    = .113455 per inch - per sq ft

    So to get the amount for the garage:

    Square Feet: 2380
    Inches of Insulation: 10

    .113455 per inch - per sq ft
    x 2380 sq ft
    x 10 Inches
    =$2,700.23

    $2,700.23 for garage contract of 10 inches of blown insulation?

    Thank you for any guidance you can provide.
    Last edited by workharder; Mar 15th 2018 at 06:23 PM.
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  2. #2
    MHF Contributor
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    Re: Cost per Square Inch...

    You've done it all correctly for the most part.

    $2700$ is the price you should expect.
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  3. #3
    Newbie
    Joined
    Mar 2018
    From
    Maryland
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    3

    Re: Cost per Square Inch...

    Thank you very much! The second part of this was the removal...

    Home Removal cost: $2,800
    Square Feet: 2000
    Inches of Insulation: 5.5 (R19)
    $2,800
    / 2000 sq ft
    / 5.5 Inches
    = .254545 per inch / sq ft

    So to get the amount for the garage:

    Square Feet: 2380
    Inches of Insulation: 4 (R19)

    .254545 per inch / sq ft
    x 2380 sq ft
    x 4 Inches
    = $2,423.27 (Amount I should be charged?)
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