Spray Foam Insulation Cost Calculator (2022)

Spray Foam Insulation Cost

Spray foam insulation costDon’t let your remodeling budget go over-board by hidden surprises – understand what the average installed costs for Spray Foam Insulation is in your zip code by using our handy calculator. If you’re looking for the Spray Foam Insulation materials and what installation cost might be, you’ve come to the right place.

As an experienced licensed home improvement contractor, I know first hand what it should cost for various levels — from Basic, Better, and of course the best. The Spray Foam Insulation cost estimator will provide you with up to date pricing for your area. Simply enter your zip code and the square footage, next click update and you will see a breakdown on what it should cost to have Spray Foam Insulation installed in your home

To use this spray foam calculator:
Basic= 1″ inch thick of coverage wall/attic
Better= 2″ inches thick of coverage wall/attic
Best= 3″ inches of thick coverage wall/attic

Spray Foam Insulation Costs Zip Code Sq. ft.
Basic Better Best
Spray Foam Insulation – Material Prices  $120.00 – $192.00  $168.00 – $252.00  $240.00 – $336.00
Spray Foam Insulation – Installation Cost  $252.00 – $384.00  $360.00 – $516.00  $504.00 – $648.00
Spray Foam Insulation – Total  $372.00 – $576.00  $528.00 – $768.00  $744.00 – $984.00
Spray Foam Insulation – Total Average Cost per square foot  $3.95  $5.40  $7.20

How Much Does Spray Foam Insulation Cost?

Spray foam is available in two different types: open-cell spray foam which is usually $1.00 to $1.20 per square foot and closed-cell spray foam which is about $1.25 to $1.50 per square foot (1″ by 12″ x 12″ area of coverage). The average cost to have spray foam professionally installed is about $2,400 for a 1,600 sq. ft. home. If you need 3″ inches of foam depth, the price above would be triple the cost.

Best Places To Use Spray Foam Insulation

Spray foam insulation has many uses and often thought as, the ultimate insulator for your home. However, installing spray foam insulation is much more costly than its predecessors and should be taken into consideration when remodeling your home or new construction budget.

However, in the long-run, the costs vs value over traditional insulation outweighs the costs with yearly savings. Where to use spray foam insulation? To get the most value and stretch your dollars, choose these areas:

  1. Attic and Crawl Space: Spray foam the attic deck (ceiling joists) to completely seal any air leaks from the lower rooms in your home.
  2. Exterior wall framing: Have all exterior walls spray foamed to help eliminate any drafts you feel around windows, doors, and mechanicals.

Open Cell Vs Closed Cell Foam Spray Insulation – What’s the difference?

Types of spray foam: Open-Cell and closed-cell spray foam both insulate by blocking air-flow in tight envelope and can be used in new construction and existing homes. But that’s where the similarities end.


Open-cell foam costs slightly less for the same thickness, but offers lower R-value. It has an R-Value of 3.5-3.6 per inch, and its density is bout 0.5 pounds per cubic foot. Furthermore, open-cell insulation requires a vapor retarder like sheetrock or plastic sheets stapled onto the interior walls.


Closed-cell’s obvious advantages compensate for its slightly higher price tag of 15% to 30% for the same thickness. closed cell spray foam (aka two-pound foam) is denser than open-cell at about 2 pounds per cubic foot. Its R-Value is roughly 6.5 per inch.  The primary reason closed-cell doesn’t need a vapor retarder, is because it already has one due to its density and mixture.

Spray Foam Insulation – Pricing and Installation Cost Checklist

  • Get at least 3-5 estimates before hiring Spray Foam Insulation contractors — estimates are typically free, unless it’s a service call for a repair.
  • Expect the price to fluctuate between various companies – each and every company have different operation expenses and over-head.
  • Try to get prices in late Fall, early winter – you should expect aggressive pricing discounts by waiting for a contractor’s down season.
  • Try to budget and additional 7-15% more on top of what our calculator gives out – I.e; difficult configurations, patterns, the additional complexity of your home will add to the costs.
  • Visit every supply house that sell your particular brand of Spray Foam Insulation and try to negotiate a better price with each supplier – I save on average 20%.
  • Remember, there are multiple styled homes in the U.S – from: Contemporary, colonial, cape-cod style, ranch, bungalow, Victorian, etc. So keep that in mind and try to budget a little more, before starting your Spray Foam Insulation project.

View other Residential & Commercial Insulation costs and Types

  • Spray Foam
  • Fiberglass & Blown-in
  • Ridgid Board & Tapered

External References:

  1. Energy.Gov — Department of Energy, types of insulation guide. Added on Jan. 21, 2015
  2. Home Depot — Insulation types buying guide. Added on Jan. 3, 2022

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