Greeley Spray Foam Insulation Cost, Broken Down by the Board Foot

Every number below is a typical Northern Colorado range, not a fixed quote. Prices are built from two installed rates that hold steady across the Front Range: open cell at $0.45 to $0.75 per board foot and closed cell at $1.00 to $1.50 per board foot. Everything else on this page is those rates multiplied by area and depth.

Want your own number in ten seconds? Run your square footage through the spray foam cost calculator. It uses the exact rates on this page.

How much does spray foam insulation cost per square foot?

Between $1.35 and $4.50 per square foot in Greeley, depending on which foam you use and how deep it goes. A square foot price only means something once you attach a depth to it, because foam is priced by volume. Two inches of closed cell in a wall and six inches of open cell on a roof deck can land at similar square foot numbers for very different jobs.

Spray foam cost per square foot installed, typical for Northern Colorado

Where it goes	Foam and depth	Cost per sq ft	Cost for 1,000 sq ft
Attic roof deck	Open cell, 6 in	$2.70 to $4.50	$2,700 to $4,500
Attic roof deck	Closed cell, 3 in	$3.00 to $4.50	$3,000 to $4,500
Exterior walls	Open cell, 3.5 in	$1.58 to $2.63	$1,580 to $2,630
Exterior walls	Closed cell, 2 in	$2.00 to $3.00	$2,000 to $3,000
Crawl space walls	Open cell, 3 in	$1.35 to $2.25	$1,350 to $2,250
Crawl space walls	Closed cell, 2 to 3 in	$2.00 to $4.50	$2,000 to $4,500
Basement rim joists	Closed cell, 2 to 3 in	$2.00 to $4.50	Usually $400 to $900 total

Small jobs carry a minimum. Most crews will not roll a rig out to a Greeley address for less than $800 to $1,500, so a 200 sq ft rim joist band and a 400 sq ft one often cost close to the same. Bundling the rim joists into a crawl space job is how people avoid paying that minimum twice.

What does spray foam cost per board foot?

One board foot is one square foot of surface covered one inch thick. Cover 1,000 square feet at three inches and you bought 3,000 board feet. That is the whole formula, and it is the honest way to compare two quotes that describe the same attic in different words.

Spray foam price per board foot installed, Northern Colorado

Foam type	Per board foot	R-value per inch	Where it earns its keep
Open cell	$0.45 to $0.75	R-3.5 to R-3.7	Attic decks, interior walls, sound control
Closed cell	$1.00 to $1.50	R-6.5 to R-7	Crawl spaces, rim joists, metal buildings

When a bid quotes a lump sum with no depth on it, ask for the board foot count. A 1,200 sq ft attic deck at 5 inches is 6,000 board feet, which is $2,700 to $4,500 in open cell. If the bid says $6,800 with no inches written down, something is missing from the page.

Have a bid in hand you want read out loud? Call (970) 414-2650

Open cell vs closed cell: how much more does closed cell cost?

Roughly double per board foot, but not double per R-value, because closed cell gets you there in about half the inches. The table below prices the same R-value targets both ways so you can see where the gap actually sits instead of comparing raw rates.

Cost to reach the same R-value with each foam, per square foot installed

R-value target	Open cell inches	Open cell per sq ft	Closed cell inches	Closed cell per sq ft
R-13	3.6 in	$1.62 to $2.70	2 in	$2.00 to $3.00
R-21	5.8 in	$2.61 to $4.35	3 in	$3.00 to $4.50
R-30	8.3 in	$3.74 to $6.23	4.3 in	$4.30 to $6.45
R-49	13.6 in	$6.12 to $10.20	7 in	$7.00 to $10.50

Two things fall out of that table. First, the two foams cost nearly the same per unit of R-value, so pick based on the job, not the rate. Second, hitting R-49 with foam alone costs $6.12 to $10.50 per square foot, which is why almost nobody does it. Colorado attics get there with blown-in on the floor instead, at $1.00 to $2.80 per square foot.

Closed cell earns its price where you also need a vapor barrier or structure: crawl spaces under 80631 bungalows, rim joists, metal roofs that sweat, and any wall cavity too shallow to fit six inches of anything. Open cell wins on big open roof decks where inches are cheap and there is nothing to keep moisture off.

How much does it cost to spray foam a 2,000 sq ft house?

Between $5,300 and $9,450 for the shell, and here is the arithmetic behind it rather than a number pulled out of the air. Take a two-story 2,000 sq ft house in west Greeley: about 1,500 sq ft of exterior wall after windows and doors, and about 1,100 sq ft of roof deck over a 1,000 sq ft footprint at a 6/12 pitch.

Whole-shell spray foam on a two-story 2,000 sq ft Greeley house

Assembly	Area	Depth and board feet	Installed cost
Exterior walls, open cell	1,500 sq ft	3.5 in = 5,250 bd ft	$2,360 to $3,940
Roof deck, open cell	1,100 sq ft	6 in = 6,600 bd ft	$2,970 to $4,950
Open cell package total	2,600 sq ft	11,850 bd ft	$5,330 to $8,890
Exterior walls, closed cell	1,500 sq ft	2 in = 3,000 bd ft	$3,000 to $4,500
Roof deck, closed cell	1,100 sq ft	3 in = 3,300 bd ft	$3,300 to $4,950
Closed cell package total	2,600 sq ft	6,300 bd ft	$6,300 to $9,450

Very few people foam an entire existing house. Open walls only happen during a gut remodel or a new build, so on a standing home the realistic version is roof deck and rim joists only: $3,370 to $5,850 in open cell, or $3,700 to $5,850 in closed cell. That is the number most Greeley homeowners are actually shopping for.

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What does it cost to spray foam a 1,000 sq ft attic?

$2,700 to $4,500 in open cell on the roof deck, or $3,000 to $4,500 in closed cell, versus $1,000 to $2,800 for blown-in on the attic floor. Both are legitimate answers to a cold house. They solve different problems, and the price gap is the reason most Weld County attics still get blown-in.

Four ways to fix a 1,000 sq ft Greeley attic, with typical costs

Approach	What you get	Typical Greeley cost
Blown-in fiberglass to R-49	About 16 in of loose fill on the floor	$1,000 to $2,200
Blown-in cellulose to R-60	About 17 in, better wind resistance	$1,600 to $2,800
Open cell on the roof deck, 6 in	About R-21, sealed unvented attic	$2,700 to $4,500
Closed cell on the roof deck, 3 in	About R-21, sealed attic plus vapor control	$3,000 to $4,500
Air seal first, then blow in	The combination most 80631 attics need	$1,350 to $3,800

Foam on the deck turns a vented attic into conditioned space, which is worth real money when ductwork or a furnace lives up there. If the attic is empty and the only complaint is a cold bedroom, air sealing plus blown-in does the same job for less. The full breakdown lives in the Greeley attic insulation cost guide.

What does it cost to spray foam a 30x40 shop or pole barn?

$1,300 for condensation control on the roof deck alone, up to $14,600 for a full shell at three inches on a shop you heat every day. A 30x40 building has about 1,300 sq ft of roof deck and roughly 1,950 sq ft of wall at a 14 foot eave, so about 3,250 sq ft of surface if you spray all of it.

Closed cell spray foam on a 30x40 Weld County shop or pole barn

Scope	Area sprayed	Depth	Installed cost
Metal roof deck only, stop the drip	1,300 sq ft	1 in	$1,300 to $1,950
Metal roof deck, light insulation	1,300 sq ft	2 in	$2,600 to $3,900
Full shell, unheated storage	3,250 sq ft	1 in	$3,250 to $4,900
Full shell, occasionally heated	3,250 sq ft	2 in	$6,500 to $9,750
Full shell, daily heated shop	3,250 sq ft	3 in	$9,750 to $14,600

That first row is the one that matters most for ag buildings along Highway 85. A single inch of closed cell on the underside of a metal roof puts the steel above the dew point and ends the winter drip that ruins stored equipment, for about $1.00 to $1.50 per square foot. Open cell is a poor fit here because it lets moisture reach the steel.

Pricing a pole barn or shop in Weld County? Call (970) 414-2650

How much does insulation removal add to the price?

$1.00 to $2.00 per square foot, which on a 1,000 sq ft attic is $1,000 to $2,000 before any foam gets sprayed. Removal is the line item that turns a $3,000 project into a $5,000 one, and it is the line most often left vague in a bid. Ask for it separately every time.

Typical Northern Colorado removal add-on costs

Removal job	Typical rate	On a 1,000 sq ft attic
Dry loose fill, good access	$1.00 to $1.50 per sq ft	$1,000 to $1,500
Rodent contaminated material	$1.50 to $2.00 per sq ft	$1,500 to $2,000
Sanitizing after removal	Flat add-on	$200 to $600
Batt removal from open walls	$1.00 to $2.00 per sq ft	Quoted per room
Bagging, hauling, and dump fees	Usually included	Confirm before you sign

Vermiculite is the exception. If the material in an older Greeley attic looks like gray popcorn, stop and pay $50 to $150 for a lab test before anyone disturbs it. It may contain asbestos, and abatement is a licensed trade quoted on its own. Insulation removal in Greeley is a separate service page with the full process.

Is DIY spray foam cheaper than hiring a contractor?

Not at any real size, and the math is not close. Two-part kits from a big box store cost more per board foot in raw material than a crew charges installed, because you are buying tiny disposable pressure vessels instead of a truck-mounted rig running from a bulk set.

DIY kit pricing against installed spray foam rates

Option	What you pay	Per board foot
Two-part kit, 200 board ft	$350 to $500 per kit	$1.75 to $2.50
Two-part kit, 600 board ft	$700 to $1,000 per kit	$1.17 to $1.67
Respirator, suit, and gloves	$120 to $300 one time	Not optional
Pro installed open cell	Crew, rig, and cleanup	$0.45 to $0.75
Pro installed closed cell	Crew, rig, and cleanup	$1.00 to $1.50

Kits also need substrate temperatures near 60 degrees or higher to cure right, which rules out most of a Weld County winter in an unheated attic. Foam that cures cold shrinks, pulls away from framing, and can stay tacky. DIY is defensible for a rim joist band or a few hundred board feet in July. It is not defensible for a whole attic.

Not sure whether your project needs foam at all? Call (970) 414-2650

What actually moves a Greeley spray foam quote up or down?

Access and setup

A walk-in basement is cheap to reach. A 30 inch crawl hatch behind a water heater is not. Crews price hose runs, masking, and how far material has to travel from the truck, and a hard access can add 15% to 30% to the same square footage.

Prep and masking

Overspray goes everywhere. Sealing off finished rooms, covering ductwork, and protecting a garage floor is real labor. Budget $150 to $600 in prep on a finished house, and close to nothing on a new build with open framing.

Depth and thermal barrier

Every extra inch adds one board foot per square foot, so a jump from two to three inches on 1,500 sq ft adds $1,500 to $2,250 in closed cell. If code requires an ignition or thermal barrier over the foam in a living space, that coating adds another $0.50 to $1.25 per square foot.

Framing, season, and utilities

Cut-up rooflines and non-standard bays waste material. Winter work in an unheated space may need temporary heat, at $100 to $300 a day. Wiring, knob-and-tube, or bath fans venting into the attic all have to be fixed first, and those repairs belong to other trades.

How fast does spray foam pay back on an Xcel bill?

Nobody can tell you a payback year for a house they have not been inside, and we will not pretend otherwise. Your return depends on how leaky the house is now, how you heat it, and what your Xcel rate does next winter. Any single number is a guess dressed up as arithmetic.

What we can give you honestly is the cost and the conditions. Foam returns fastest where a small, cheap area is doing a large amount of the leaking, and slowest where you are paying to upgrade something that already works.

What each spray foam project costs, and what decides whether it pays

Project	Installed cost	What decides the return
Rim joists and band, 1970s home	$400 to $900	Small area, large air leak, so the return arrives first
Crawl space, closed cell	$2,000 to $4,500	Worth most where floors run cold and pipes have frozen
Attic roof deck, open cell	$2,700 to $4,500	Worth most when ductwork or a furnace sits in the attic
Whole shell, two-story house	$5,300 to $9,450	Slowest to return, so it belongs in a gut remodel or new build

The starting point decides everything. A drafty Union Colony era house near downtown with a bare crawl space and R-11 in the attic has a lot to gain. A 2015 build in Promontory is already tight, and blown-in is the better spend there. We will tell you which one you have before you spend anything.

What rebates and tax credits cut the cost?

Federal 25C tax credit

The Energy Efficient Home Improvement Credit returns 30% of what you spend on insulation and air sealing, up to $1,200 per year. It covers materials and, for insulation, the work itself. Because the cap resets annually, splitting a large project across two calendar years can be worth real money. Read the current rules on the IRS 25C credit page.

What the 25C credit does to a Greeley spray foam price

Project price	30% credit	Hits the $1,200 cap?	Your net cost
$1,500	$450	No	$1,050
$2,500	$750	No	$1,750
$4,000	$1,200	Exactly at the cap	$2,800
$6,500	$1,950	Yes, limited to $1,200	$5,300
$9,450	$2,835	Yes, limited to $1,200	$8,250

Xcel Energy rebates

Xcel Energy runs insulation and air sealing rebates for its Colorado customers, and most Greeley addresses are on Xcel gas, electric, or both. Program amounts and qualifying rules change from year to year, so check Xcel's current residential rebate list before you count on a figure.

Work your budget off the 25C credit alone: a $2,500 job nets out at $1,750 after the federal credit, and any Xcel rebate you qualify for comes off on top of that.

Want help lining up the rebate paperwork? Call (970) 414-2650

Common questions about spray foam insulation cost in Greeley

Keep going

• Run your own numbers in the spray foam cost calculator
• Spray foam insulation in Greeley, CO
• Closed cell spray foam and where it belongs
• Attic insulation for Greeley homes
• Crawl space insulation and encapsulation
• Metal building and pole barn insulation
• Attic insulation cost in Greeley, CO