R-3.7 per inch

Open-Cell Spray Foam

Foam that expands on contact and sets soft and light. It seals into shapes nothing else reaches, which makes it the answer for irregular framing and awkward ceilings.

The basics

What it is and
what it does.

Open-cell foam is sprayed as a liquid and expands many times over within seconds, pressing into every corner of the cavity before it cures. That expansion is the point: it seals as it insulates, so there is no separate gap-filling step.

It stays soft and open in structure, which makes it excellent for sound and lets the assembly dry if it ever gets damp. It is not a moisture barrier, so where water is the concern we use the closed-cell version instead.

R-value
R-3.7 per inch
Best for
Irregular framing
Texture
Soft and open
Open-Cell Spray Foam installed in a Utah home
Depth and R-value

How deep is
deep enough?

R-value is just resistance to heat moving through. More depth means a higher number. Drag the slider to see how open-cell foam stacks up.

Installed depth 7"
3"14"

Foam is measured by applied thickness. Because it seals as it goes, its real-world performance often exceeds what the per-inch number alone suggests.

Roughly equal to
R-0

Set a depth to see where it lands.

Per inchR-3.7
Utah attic targetR-49
Depth for that target
Book a free visit

A guide only. Real performance depends on coverage, gaps and how the material settles, which is what the visit checks.

Straight answer

When we use it,
and when we do not.

No material is right for every job. This is where open-cell foam earns its place, and where we would suggest something else.

A good fit for

  • Framing that is uneven or obstructed
  • Cathedral and vaulted ceilings
  • Interior walls where sound matters
  • Spaces where sealing and insulating in one pass helps

We would suggest something else for

  • Crawl spaces and anywhere below grade
  • Rim joists in contact with damp
  • Jobs where budget is the deciding factor
Where it goes

Jobs we use
it on.

The services where this material is usually the answer.

Spray Foam Insulation

Spray Foam Insulation

For spaces where batts cannot seal properly.

Attic Insulation

Attic Insulation

The attic is where most homes lose the most heat, and it is usually the cheapest space to put right.

Wall Insulation

Wall Insulation

For older homes with empty wall cavities.

In their words

What homeowners
say afterwards.

Reviews from homeowners across the Wasatch Front, posted on Google.

★★★★★

“These guys are great from start to finish. They cleaned up better than it was before they started. You need to hire them to take care of your insulation work.”

W
Wayne Margetts
Google review
★★★★★

“We had our attic insulated last November and our heating bill dropped by about 30% that first winter. The crew was on time, respectful of our home, and finished in one day. Couldn’t be happier with the results.”

M
Mark T.
Google review
★★★★★

“ECO Elements did a fabulous job. They got here exactly when they said they were going to and spent the whole day working hard in the hot attic to get the insulation out and the good stuff in. The price was fabulous and the work was top-notch.”

J
Jayme S.
Google review
★★★★★

“Our crawl space had moisture problems for years. Eco Elements came out, assessed everything, and insulated the whole area properly. No more musty smell, and our floors aren’t freezing cold anymore. Professional from start to finish.”

S
Sarah L.
Google review
★★★★★

“Their people showed up, kept appointments, bid price under another, did what they said they would, got it done fast and professionally.”

M
Marlon Spencer
Google review
★★★★★

“I called for a wall insulation quote and they had someone out within two days. The estimate was detailed and honest. Installation was quick and clean. Our upstairs bedrooms are finally comfortable year-round.”

D
David R.
Google review
★★★★★

“I called Eco Elements and they were able to squeeze my small job in the same day! I will definitely be using them again!!! Great pricing and everyone was wonderful to work with! Thanks so much!”

C
Cathie Coleman
Google review
★★★★★

“We had our garage insulated before winter and the difference is night and day. The temperature stays manageable now, even on the coldest days. Great value for what we paid.”

J
Jennifer M.
Google review
★★★★★

“What an incredible experience. They did some custom work for our bus we are converting. Their geniality and expertise was absolutely appreciated. Awesome company to work with.”

S
Sam Smith
Google review
★★★★★

“Basement insulation made such a huge difference in our home. Used to feel like a cave down there. Now it is comfortable enough to use as a family room. The team was polite and cleaned up everything when they were done.”

B
Brian H.
Google review
★★★★★

“We got quotes from three companies. Eco Elements was the most thorough during the assessment and had the best value. They explained exactly what they would do and why. No pressure, just honesty. I would recommend them to anyone.”

A
Amy K.
Google review
Common questions

About open-cell foam.

If yours is not here, ask us on the phone.

01What is the difference between open and closed cell?
Open-cell is lighter, softer and better for sound. Closed-cell is denser, gives more R-value per inch and resists moisture. We use open-cell where sealing and sound matter, closed-cell where damp does.
02Does spray foam smell?
There is an odour during application and while it cures. We ventilate through the day and ask people to stay out of the immediate area until it has set, which is usually a few hours.
03Can it be sprayed over existing insulation?
No. Foam needs a clean substrate to bond to, so anything already in the cavity comes out first. That removal is part of the quote, not an extra.
04Is it worth the extra cost over batts?
In an awkward space, often yes, because it seals gaps that batts cannot. In a clean, regular cavity the advantage is smaller and batts may be the sensible choice.
Side by side

How it compares
to the rest.

We fit all six, so what we recommend depends on the space rather than what is on the truck.

MaterialPer inchBest for
Blown-In Cellulose R-3.5 per inch Attics and walls
Fiberglass Batt R-3.2 per inch Open framing
Open-Cell Spray Foam R-3.7 per inch Irregular framing You are here
Closed-Cell Spray Foam R-6.5 per inch Rim joists and crawl spaces
Air Sealing Not rated Before insulating
Vapor Barrier Not rated Ground and walls
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material you need?

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Mon–Fri · 8am–6pm  ·  Serving the Wasatch Front since 2015