Greeley Attic Insulation Cost: What Homeowners Here Actually Pay
The upstairs bedroom reads 62 degrees while the thermostat downstairs says 70, the gas bill jumped again in January, and someone told you the attic is the problem. They are probably right. This guide gives homeowners and landlords in Greeley, Evans, Eaton, and the rest of Weld County honest attic insulation cost ranges, so you know what a fair bid looks like before a truck pulls up.
Every figure here is a typical Northern Colorado range rather than a quote for your house. The single number worth memorizing: a complete attic project in Greeley usually falls between $1,500 and $4,000.
Two attics of the same size can differ by thousands based on what is already up there, so read the rows below before you read anyone's bid.
Want a number for your own square footage right now? The spray foam cost calculator prices the foam options on this page in about ten seconds.
How much does attic insulation cost per square foot?
$1.00 to $2.80 per square foot for blown-in, and $2.70 to $4.50 per square foot for spray foam on the roof deck. Square footage here means the attic floor area, which is usually the footprint of the heated space below it, not the total size of the house.
| Attic job | Per sq ft installed | What that buys you |
|---|---|---|
| Blown-in top-up over existing fill | $1.00 to $1.60 | R-19 brought up to about R-49 |
| Blown-in full depth on bare joists | $1.20 to $2.40 | R-49 to R-60 from scratch |
| Cellulose, dense loose fill | $1.40 to $2.80 | Better resistance to wind washing |
| Attic air sealing | $0.30 to $1.15 | The step that makes R-value work |
| Old insulation removal | $1.00 to $2.00 | Vacuumed out, bagged, and hauled |
| Open cell foam on the roof deck | $2.70 to $4.50 | A sealed, unvented attic |
| Closed cell foam on the roof deck | $3.00 to $4.50 | Sealed attic plus vapor control |
Small attics carry a minimum. Most crews will not mobilize for under $800 to $1,200, so a 500 sq ft attic and a 750 sq ft attic often price the same. If your attic is under about 700 square feet, ask whether adding the garage ceiling or an attic hatch cover brings the per-square-foot number down.
What does blown-in attic insulation cost in Greeley?
$1,200 to $3,360 for a typical 1,200 square foot Greeley attic, depending on the material and the target R-value. Blown-in is the workhorse here because it flows around wiring and framing, fills the awkward corners of a 1960s truss attic, and costs a fraction of foam.
| Material and target | Settled depth | Per sq ft | 1,200 sq ft attic |
|---|---|---|---|
| Fiberglass to R-38 | About 12 in | $1.00 to $1.60 | $1,200 to $1,920 |
| Fiberglass to R-49 | About 16 in | $1.20 to $2.00 | $1,440 to $2,400 |
| Fiberglass to R-60 | About 19 in | $1.50 to $2.40 | $1,800 to $2,880 |
| Cellulose to R-49 | About 14 in | $1.40 to $2.30 | $1,680 to $2,760 |
| Cellulose to R-60 | About 17 in | $1.70 to $2.80 | $2,040 to $3,360 |
Cellulose costs $240 to $480 more than fiberglass on that same attic. It packs denser, so chinook winds moving through soffit vents push it around less, and it handles the west-facing attics that bake all summer a little better. Fiberglass will not absorb water if a roof leak happens. Either one is a defensible choice at these prices.
Want a per-square-foot number for your attic? Call (970) 414-2650
What does spray foam cost in an attic, per board foot?
Open cell runs $0.45 to $0.75 per board foot installed and closed cell runs $1.00 to $1.50. A board foot is one square foot covered one inch deep, so a 1,000 sq ft roof deck at 6 inches of open cell is 6,000 board feet and lands at $2,700 to $4,500.
| Foam | Per board foot | R per inch | Typical attic depth | Cost per sq ft |
|---|---|---|---|---|
| Open cell | $0.45 to $0.75 | R-3.5 to R-3.7 | 6 in on the deck | $2.70 to $4.50 |
| Closed cell | $1.00 to $1.50 | R-6.5 to R-7 | 3 in on the deck | $3.00 to $4.50 |
Closed cell costs roughly twice as much per inch but delivers nearly twice the R-value per inch, so at the depths above the two land within $300 of each other on a 1,000 sq ft deck. Choose closed cell when you need vapor control or the rafter bays are shallow. The full breakdown, including whole house and shop pricing, sits on the Greeley spray foam insulation cost guide.
How much does it cost to insulate a 1,000 sq ft attic?
$1,200 to $2,000 for blown-in fiberglass to R-49, or $1,550 to $3,500 once you add air sealing, which you should. A 1,000 square foot attic is the common case for a two-story Greeley house or a small ranch, and it is the size most quotes in this market are built around.
| Scope | What happens | Typical cost |
|---|---|---|
| Blown-in only, to R-49 | Blow over what is already there | $1,200 to $2,000 |
| Blown-in only, to R-60 | Deeper fill, same trip | $1,500 to $2,400 |
| Air seal plus blow to R-49 | Seal penetrations, baffle, then blow | $1,550 to $3,500 |
| Remove, air seal, blow to R-49 | Full tear-out first | $2,750 to $6,100 |
| Open cell on the roof deck | Unvented sealed attic, 6 in | $2,700 to $4,500 |
| Closed cell on the roof deck | Unvented sealed attic, 3 in | $3,000 to $4,500 |
The third row is the one to price out. Air sealing before insulating is what separates a job that drops your bill from a job that just makes the attic look better. Blowing 16 inches of fiberglass over open top plates and an uncapped furnace chase buys far less than the R-value on paper suggests.
Find out what your attic actually needs
Tell us the room, the square footage, and what it is doing wrong. You get a straight price range on the phone and a firm quote after we look at it.
Call (970) 414-2650Greeley, Evans, Windsor, Eaton, Johnstown, Milliken, Severance, and Weld County.
What does the attic cost on a 2,000 sq ft house?
Between $1,550 and $6,400, and the spread is entirely about house shape. A 2,000 square foot two-story sits under a 1,000 square foot attic. A 2,000 square foot ranch sits under a 2,000 square foot attic, so it costs about twice as much to insulate the same size house.
| House style | Attic floor area | Air seal plus blow to R-49 | Add removal if needed |
|---|---|---|---|
| Two-story, 1,000 sq ft footprint | 1,000 sq ft | $1,550 to $3,500 | Add $1,000 to $2,000 |
| Split level | About 1,300 sq ft | $1,910 to $4,100 | Add $1,300 to $2,600 |
| Ranch, full footprint | 2,000 sq ft | $2,750 to $5,500 | Add $2,000 to $4,000 |
| Ranch plus attached garage attic | About 2,450 sq ft | $3,290 to $6,400 | Add $2,450 to $4,900 |
Measure the attic, not the house, before you compare bids. If two quotes for the same address differ by $1,200, there is a good chance one of them included the garage ceiling and the other did not.
R-49 vs R-60: what does the upgrade actually cost?
About $0.30 per square foot more, which is $300 to $400 on a 1,000 sq ft attic and $600 to $800 on a 2,000 sq ft one. The Department of Energy puts Colorado attics in the R-49 to R-60 range for climate zone 5B, and the jump between the two is the cheapest R-value you will ever buy because the crew, the hose, and the setup are already paid for.
| Attic size | Cost to R-49 | Cost to R-60 | The difference |
|---|---|---|---|
| 800 sq ft | $960 to $1,600 | $1,200 to $1,920 | $240 to $320 |
| 1,000 sq ft | $1,200 to $2,000 | $1,500 to $2,400 | $300 to $400 |
| 1,500 sq ft | $1,800 to $3,000 | $2,250 to $3,600 | $450 to $600 |
| 2,000 sq ft | $2,400 to $4,000 | $3,000 to $4,800 | $600 to $800 |
Two cautions. Deeper fill needs taller baffles at the eaves so soffit vents stay open, at $3 to $8 per rafter bay. And if you store anything on the attic floor, going to R-60 buries it, so budget $150 to $500 for a raised storage platform over part of the deck.
Deciding between R-49 and R-60 for your house? Call (970) 414-2650
What does it cost based on what is in your attic now?
This is the biggest variable in any attic insulation cost estimate, and it is why online calculators miss. Two 1,200 square foot attics on the same Greeley block can quote at $1,790 and $6,900 based on nothing but the condition of what is already up there.
| What is up there now | What the job involves | Typical total |
|---|---|---|
| Bare joists or under R-11 | Air seal, baffle, blow to R-49 | $1,790 to $3,900 |
| R-19 fiberglass, dry and clean | Air seal, then top up to R-49 | $1,500 to $3,400 |
| Matted, wet, or rodent damaged | Remove, sanitize, air seal, blow | $3,200 to $6,900 |
| Vermiculite or suspected asbestos | Lab test before anyone touches it | Test $50 to $150, abatement quoted separately |
| Knob and tube wiring present | Electrician first, then insulate | Add $800 to $3,000 for the wiring |
Old fiberglass that is dry, even, and not compressed does not need to come out. Blowing over it is normal practice and saves you the removal line entirely. If a contractor insists on a tear-out for material that looks fine from the hatch, ask them to point at the reason.
How much does removing old attic insulation add?
$1.00 to $2.00 per square foot, plus $200 to $600 for sanitizing when rodents have been in it. That is $1,200 to $2,400 on a 1,200 sq ft attic, so removal can easily cost as much as the new insulation going back in.
| Removal scenario | Rate | 1,200 sq ft attic |
|---|---|---|
| Dry loose fill, easy hatch access | $1.00 to $1.50 per sq ft | $1,200 to $1,800 |
| Rodent contaminated | $1.50 to $2.00 per sq ft | $1,800 to $2,400 |
| Sanitizing and deodorizing | Flat add-on | $200 to $600 |
| Low clearance or cut-up attic | Add 15% to 30% | $180 to $720 extra |
| Bagging, hauling, and dump fees | Usually included | Confirm in writing |
Mice are the usual reason. Cellulose and fiberglass do not feed them, but both make excellent nesting material, and droppings in loose fill are a health issue rather than an aesthetic one. Full detail lives on the Greeley insulation removal page.
Is DIY attic insulation cheaper than hiring a crew?
With cellulose, yes, by roughly $900 on a 1,000 square foot attic. With fiberglass, barely, and you keep all the risk. Big box stores waive the blower rental when you buy enough bags, which is where most of the savings claim comes from.
| Line item | What you pay | Notes |
|---|---|---|
| Blown-in fiberglass bags | $1,100 to $1,750 | About 28 to 35 bags |
| Blown-in cellulose bags | $480 to $700 | About 38 to 45 bags |
| Blower rental | $0 to $120 per day | Often waived with a bag minimum |
| Truck or trailer to haul bags | $25 to $90 | A full attic will not fit in a sedan |
| Respirator, coveralls, work lights | $60 to $180 | Not optional in a 130 degree attic |
| Same job, installed by a crew | $1,200 to $2,000 | Includes baffles, depth markers, cleanup |
What DIY almost never includes is the air sealing, and that is the half of the job that moves the gas bill. It is also two people, one in the attic and one feeding the hopper, across a full weekend. In July a Greeley attic hits 130 degrees by noon, which is why most of these projects get finished in October.
Got a quote you want compared against these ranges? Call (970) 414-2650
What does attic air sealing add, and is it worth it?
$350 to $1,500, and it is the highest-return line item on the whole estimate. Insulation slows heat moving through a surface. It does nothing about warm air pouring up a furnace chase, and a Greeley house under chinook winds is being actively pumped, not just passively losing heat.
| Air sealing item | What gets sealed | Typical cost |
|---|---|---|
| Basic penetration sealing | Wire and pipe holes, top plates | $350 to $700 |
| Full attic air seal | Plus chases, dropped soffits, bath fans | $700 to $1,200 |
| Complex or steep attic | Low clearance, cut-up roof | $1,000 to $1,500 |
| Insulated attic hatch cover | Weatherstripped box over the opening | $150 to $400 |
| Fire-rated can light covers | Per recessed light | $25 to $60 each |
| Eave baffles | Keeps soffit vents open | $3 to $8 per bay |
Air sealing is also the fix that stops ice dams from forming on north-facing Greeley rooflines, because dams come from warm air melting snow at the ridge and refreezing at a cold eave. See attic air sealing in Greeley for how that work is done.
How fast does an attic upgrade pay back on your Xcel bill?
Faster the worse your starting point is, and we are not going to hand you a payback year for a house we have not been in. The Department of Energy is clear that sealing and insulating an under-insulated attic lowers heating and cooling costs. How much depends on your house, your furnace, and your rate.
So here is what is actually knowable: the price, and what the credit does to it. Judge the return by which row below describes your attic today.
| Starting point | Typical project cost | Cost after the 25C credit | What decides the return |
|---|---|---|---|
| Bare joists up to R-49 | $1,790 to $3,900 | $1,250 to $2,730 | The largest gap to close, so the strongest case |
| R-11 up to R-49 | $1,600 to $3,700 | $1,120 to $2,590 | Still a wide gap, and usually worth doing now |
| R-19 up to R-49 | $1,500 to $3,400 | $1,050 to $2,380 | Worth it when air sealing rides along on the same trip |
| R-30 up to R-60 | $1,850 to $3,600 | $1,295 to $2,520 | Diminishing returns, so pair it with other work |
Comfort shows up immediately whatever the bill does. Rooms over garages stop being unusable, upstairs bedrooms stop running hot in July, and the furnace stops short cycling on windy nights. Landlords in the 80634 rental market tend to price that separately from the gas bill.
What rebates and tax credits reduce attic insulation cost?
The federal 25C credit
The Energy Efficient Home Improvement Credit gives back 30% of what you spend on insulation and air sealing, capped at $1,200 per year. It applies to your primary residence, it is a credit rather than a deduction, and the cap resets each January. Confirm the current rules on the IRS 25C credit page before you file.
| Attic project | 30% federal credit | Net cost after the credit |
|---|---|---|
| $1,500 blown-in top-up | $450 | $1,050 |
| $2,200 air seal plus R-49 | $660 | $1,540 |
| $3,400 remove and replace | $1,020 | $2,380 |
| $4,000 full attic to R-60 | $1,200 | $2,800 |
| $5,500 attic plus crawl space | $1,200 at the annual cap | $4,300 |
Xcel Energy rebates
Most Greeley addresses are Xcel customers, and Xcel runs residential insulation and air sealing rebates in Colorado. Amounts and qualifying rules change year to year, so pull Xcel's current residential rebate sheet before you build it into a budget. Budget off the federal credit alone: a $2,200 attic job nets out at $1,540, and any Xcel rebate you qualify for comes off after that.
Ready to price your attic with the rebates figured in? Call (970) 414-2650
Common questions about attic insulation cost in Greeley
How much does attic insulation cost in Greeley, CO?
Most whole-attic projects in Greeley run $1,500 to $4,000. Blown-in insulation costs $1.00 to $2.80 per square foot installed depending on the material and the R-value you are chasing, so a 1,200 sq ft attic taken to R-49 usually lands at $1,440 to $2,400 before air sealing. Add $350 to $1,500 for air sealing and $1.00 to $2.00 per square foot if old material has to come out.
What does it cost to insulate a 1,000 sq ft attic?
Figure $1,200 to $2,000 for blown-in fiberglass to R-49, or $1,500 to $2,400 to reach R-60. Air sealing the same attic first adds $350 to $1,500, which brings a complete job to $1,550 to $3,500. Spray foam on the roof deck instead is $2,700 to $4,500 in open cell at 6 inches, or $3,000 to $4,500 in closed cell at 3 inches.
Is upgrading from R-49 to R-60 worth the extra cost?
The upgrade itself is cheap: about $300 to $400 more on a 1,000 sq ft attic and $600 to $800 more on a 2,000 sq ft one. You are only paying for a few more inches of loose fill on ground the crew already covered.
The energy return on those last 11 points of R-value is small compared to the first 30, so it is worth doing while the blower is already running and not worth booking a second trip for later.
How much does it cost to remove old attic insulation?
$1.00 to $2.00 per square foot, so $1,200 to $2,400 on a 1,200 sq ft attic. Dry, clean loose fill with good access sits at the low end. Rodent contaminated material sits at the top, plus $200 to $600 for sanitizing. Removal is only necessary when the existing material is wet, matted flat, contaminated, or in the way of foam going on the roof deck.
What R-value does an attic need in Colorado?
R-49 to R-60. Greeley sits in DOE climate zone 5B, and that is the range the Department of Energy recommends for attics here. In blown fiberglass that is roughly 16 to 19 inches of settled depth. Plenty of pre-1980 homes around Union Colony and the older 80631 blocks still measure R-11 to R-19, which is typically the widest gap in this market.
Is blown-in or spray foam better for my attic?
For a vented attic with nothing but storage up there, blown-in wins on cost: $1.00 to $2.80 per square foot against $2.70 to $4.50 for foam.
Foam on the roof deck is the better answer when ductwork or an air handler lives in the attic, when the roofline is too cut up to hold loose fill evenly, or when ice dams keep coming back. It costs roughly twice as much and does a different job.
Keep reading
Get an attic number you can budget against
Tell us the room, the square footage, and what it is doing wrong. You get a straight price range on the phone and a firm quote after we look at it.
Call (970) 414-2650Greeley, Evans, Windsor, Eaton, Johnstown, Milliken, Severance, and Weld County.