How Much Does Spray Foam Insulation Cost?

Well, that depends . . .
When thinking about insulation choices, one of the biggest factors for most consumers is the cost of the insulation. Trying to save money on your long term heating and cooling bills can be helpful, but not if the process of doing so causes you to go over budget in the process. When it comes to spray foam insulation, many consumers want to know one simple thing; how much does spray foam insulation cost? Let’s take a look at the differences between open and closed cell spray foam insulation costs first.

How much Does Open Cell Insulation Cost and Why?
Open cell spray foam insulation is the cheaper of the two options, coming in at anywhere between $0.45 and $0.65 per board foot, depending on location. This cheapness comes at a price, however, as the R-value of 3.5-3.6 per inch is only around 55-60% of what close cell spray foam insulation can offer.

How much Does Closed Cell Insulation Cost and Why?

Closed cell spray foam insulation runs around $0.70 to $2 per board foot, but offers not only a higher R-value of 6.0-6.5 per inch, but the ability to add structural strength to weaker walls or ceilings. Closed cell is also a vapor retarder, making it more ideal for the undersides of roof sheathing, where open cell may struggle to stay dry.


Why the Cost Difference Between Open Cell and Closed Cell Insulation?
The difference in cost of the two types of insulation depends on the part of the country that you live in (some areas are more expensive for insulation than others), the business you choose to do the work (some companies do more volume so they get their product at a lower cost), and the volume/size of the area you need insulated. Small projects will be priced a little higher per square foot than larger volume projects – think of buying a small bag of chips versus a large bag of chips. Areas in which a smaller amount of insulation is needed, like a thin wall, may require you to use a certain type of insulation. For example, having deep framing wall studs that can accommodate your R-value with open cell spray foam may allow you to avoid using a more expensive option. By doing research and contacting installers like Graber Insealators first, you can know exactly what to expect for your costs and options when you get your spray foam insulation installed.


Ok, so what’s the average cost for jobs in Louisville and Southern Indiana?

Of course the cost depends on the job and how much needs to be insulated. In our area, residential insulation estimates usually range from $1,999 to $5,999 and commercial jobs range from a few thousand to hundreds of thousands. Those are just ranges. For a free estimate, give us a call.

Share →