$0.75 – $0.95 per foot
Average Cost Estimate
$1.10 – $1.45 per foot
$1.35 – $1.85 per foot
|Insulation Type||Open Cell Foam||Open or Closed Cell||Open or Closed Cell|
|Insulation Thickness||1 – 2 inches||1 – 2 inches||1 – 3 inches|
|New or Existing Home||New||Both||Both|
|Ease of Access||Very Easy||Average||Average to Hard|
|Prep Work Required||Minimal||Average||Average to High|
|Installed By||Pro||Pro||DIY or Pro|
|Cost of Tools & Supplies||None / Included||None / Included||$175 – $250|
|Permits, If Required||$0||$0||$0|
Spray-on open cell or closed cell foam insulation can be for a whole-house insulation or used in specific locations where an airtight seal with a good R-value is required. When used throughout the envelope of a structure, the cost is significantly higher than fiberglass or blown cellulose, but that extra expense is paid back in 3-7 years in most climates through superior energy savings from your utilities and home HVAC systems. Because spray foam insulation also acts as a moisture barrier, it is frequently used in crawl spaces, walls and attics. Common spot applications include sealing air gaps around outlets, light fixtures, window and door frames, foundation sill plates, vents and other openings in the structure’s exterior as part of regular home maintenance.
This Costimate explains how you can figure spray foam insulation costs, broken down into material and labor costs. Your research here will allow you to accurately estimate your costs before talking to a pro for spray foam insulation. In many homes and other structures, both spray foam insulation and blown-in insulation are used to insulate the same space for the greatest r-value and energy savings. At the end of the page, compare costs shared by other leading cost comparison websites, as well as actual costs by professionals and homeowners who’ve had the job completed in their home.
The cost factors below are focused on large applications of spray foam to a new home or adding new insulation to an existing home.
Note: For spot applications or small projects, most homeowners get cans of spray foam and apply it where needed. You might also hire a handyman for $35-$55 per hour plus materials at $13-$16 per 30 ounce can of spray foam.
Here’s an itemized list of the insulation, additional materials and tools needed for the job, so you can compare total costs of installing the insulation yourself or hiring an installer. Spray foam insulation estimates from contractors near you won’t be this detailed. To learn about the DIY aspect, how much you need to order etc, Sprayfoamkit.com offers a great tool to calculate costs.
For comparison value, spray foam insulation when supplied by the installer costs around $0.75 – $1.25 per board foot, installed.
Remember: One board foot is a square foot covered to a depth of one inch, about R3.5 for open-cell insulation and about R6.5 for closed-cell insulation. Multiply the board foot cost by the number of inches you plan to install to get the intended R-value.
Permits and Inspection Cost
Related Costs and Installation Time
From the prices above, you see that the cost of the material is less when installed by a professional. This is because they buy it in such large volume that they get a discount. The total job will cost more when professionally installed vs. DIY installation. It’s clear, then, that your decision comes down to whether paying the extra cost is worth saving yourself the time and hassle and being assured of professional results.
Caution: It is essential when spraying insulation over a ceiling (rather than to the underside of the roof deck) that attic vents remain open. If they are covered, moisture and heat will build up in the attic and cause mold, rot and roof damage.
Spray Foam Insulation, Installation Time Schedule
Small jobs such as a small attic or crawlspace take up to one day. The timeframe for larger jobs looks like this for a two-person crew:
For spot applications, applying spray foam is easily a do-it-yourself job for the handy homeowner. If you plan to update your homes existing insulation with a broad application of spray foam to attics, basement, crawl space or some other larger area, this is definitely best left to the pros. They have the tools, knowledge, experience and safety equipment to do the job quickly and right.
|Costimates||$1.35 / Board Foot||$0.65 – $1.95 / Board Foot|
|RemodelingExpense||$5.50 / Sqft||$3.90 – $7.20 / Sqft|
|ImproveNet||$1.65 / Board Foot||$0.35 – $2.00 / Board Foot|
|HomeAdvisor||$2,175||$500 – $6,000|
|HomeWyse||$1.24 / Sqft||$0.97 – $1.34 / Sqft|
|Suggest a Cost Comparison from Another Website|