Fast, Reliable Attic Insulation Across Clovis
Attic insulation in Clovis, CA typically runs $1,400 to $3,800 for a full retrofit, with top-ups on 1980s and 1990s ranches coming in lower at $900 to $1,700. We give you a written price before any work starts, and we show up in the window we commit to. Crews from our Fresno, Central Valley office serve Clovis every weekday, and we answer the phone live 24/7 at (559) 785-2658.
Clovis isn’t Fresno. The housing stock here is younger, mostly single-story wood-frame ranches built after the 1980s, and many of them left the builder with R-19 or less in the ceiling and nothing in the garage walls. We know exactly what that means on a 105°F July afternoon, and we know how to fix it in one trip.
Why Woolsey Insulation Fresno Is Clovis’s Preferred Attic Insulation Company
Clovis homeowners call us because we do attic insulation and spray foam insulation only. We don’t sell roofing, HVAC, or windows. That narrow focus matters when you’re standing in a hot upstairs hallway trying to figure out why the AC can’t keep up. Glenn Hartley leads our crew, and every job we run through Clovis follows the Kingswell Way: say the price, show up in the window, leave the job site cleaner than we found it, put the guarantee in writing, and come back if anything fails within 365 days.
We work with Owens Corning, Johns Manville, Knauf, Rockwool, CertainTeed, Icynene, Demilec, and GreenFiber. That means the material recommendation fits your Clovis home, not whatever happens to be on the truck that morning. Every technician who walks through your front door is background-checked and in uniform. You’ll know exactly who’s in your house, and every job includes a written guarantee at no extra charge.
Response time to Clovis is usually same-day or next-day for diagnostic visits. A real person answers the phone at 2 a.m. if that’s when you call.
Insulation Contractors in Clovis
Insulation contractors in Clovis spend most of their time retrofitting tract homes built between 1985 and 2010, and for good reason. Those homes went up fast, and the attic insulation was often an afterthought. The correct fix usually means air sealing the top plates, can lights, and wire penetrations first, then adding blown-in insulation to bring the ceiling to R-38 or higher. Attic batt insulation in Clovis runs $1,100 to $2,600 for a standard single-story ranch, and blown-in attic insulation lands between $1,400 and $3,200 depending on square footage and how much air sealing we do first.
A Clovis homeowner needs this work when the upstairs runs eight to ten degrees warmer than the downstairs, when the AC runs nonstop from 3 p.m. to 9 p.m. in summer, or when winter mornings show frost melt patterns on the roof that reveal exactly where the insulation is missing. If the original builder-grade batts in a 1990s home near Temperance Avenue are compressed or gapped, the effective R-value can be cut in half, and adding more insulation on top without sealing the leaks doesn’t fix the real problem.
Air Sealing Before Insulation
In Clovis ranch homes, the biggest energy loss isn’t the attic floor itself. It’s the gaps around top plates, recessed lights, and plumbing chases. We seal those before we add insulation. Skipping this step is why some Clovis homeowners pay for an R-38 upgrade and still feel hot air bleeding into the hallway in July.
Blown-In vs. Batts
Blown-in attic insulation covers uneven joist bays and gets into the corners where batts leave gaps. For most Clovis attics, we use Owens Corning AttiCat or Johns Manville blown-in fiberglass. In attics where the joist spacing is uniform and the floor is open, Rockwool or CertainTeed batts can be the better fit.
Attic Ventilation in Clovis
Attic ventilation in Clovis matters more than most homeowners think, especially in the peak summer months when attic temperatures climb past 140°F. Without proper airflow, that heat radiates through the ceiling and forces the AC to work against itself. Proper ventilation in a Clovis attic usually means balanced intake and exhaust, with ridge or static vents sized to the attic’s square footage. Ventilation upgrades in Clovis run $300 to $900 when done as part of an insulation job, and they’re rarely recommended as a standalone fix.
A Clovis homeowner needs ventilation work when the attic feels like a wall of heat the second you open the hatch, when summer utility bills spike despite a recent insulation upgrade, or when moisture builds up on the underside of the roof deck in January after a wet Central Valley winter. Older Clovis ranches often have gable vents only, which leaves the center of the attic stagnant. Without addressing the airflow, even the best insulation can’t do its full job.
Baffles and Soffit Prep
Attic baffles keep insulation from blocking the soffit vents that feed air into the attic. If we blow in new insulation over clogged soffits, we’ve just traded one problem for another. That’s why baffle installation and ventilation prep are part of the estimate, not an add-on we mention after the job starts.
Radiant Barriers in Clovis Summers
On a 102°F day in Clovis, a radiant barrier attached to the underside of the roof deck can reduce attic temperatures by 15 to 25 degrees. It’s not a substitute for insulation, but in combination with an R-38 attic and balanced ventilation, it’s the difference between an upstairs that settles and one that keeps climbing. We include radiant barrier options in our written estimate for homes along Herndon Avenue and the newer subdivisions east of Clovis Avenue where afternoon sun exposure is unshaded.
Trusted Brands We Service in Clovis
We stock and install Johns Manville, Rockwool, CertainTeed, and the other brands we carry, so Clovis customers aren’t waiting on a regional distributor to restock. Your written estimate names the exact material we’ll use and why it fits your attic. No swaps at the door, no “we ran out of that product” conversations mid-job. Just what’s in writing, honored in full.
Common Attic Insulation Problems We See in Clovis Homes
- Settled early-2000s cellulose in Harlan Ranch and Loma Vista. Blown-in cellulose installed when those subdivisions went up has routinely settled 30 – 40% below code, leaving uninsulated bands that show on thermal cameras as hot stripes. We top these attics to R-38 in a single visit.
- Builder-grade R-19 batts in 1980s and 1990s ranches. Original fiberglass batts near Shaw Avenue and Minnewawa are often compressed, gapped, or reversed. Effective R-value can be half of what the label says. Air sealing plus a proper top-up fixes it.
- Uninsulated attached garage walls. Post-1980 Clovis ranch homes regularly have bare garage walls and ceiling, turning the garage into a heat sink that pushes heat into the house all afternoon. Insulating and finishing those walls in one day is a job we do regularly.
- Recessed can lights leaking air. Older can lights in Clovis ceilings are essentially open holes into the attic. We air seal them and, where needed, build boxes around them before insulation goes in.
Pricing for Attic Insulation in Clovis, CA
| Service | Typical Range |
|---|---|
| Blown-in attic insulation, standard ranch | $1,400 – $3,200 |
| Attic batt insulation | $1,100 – $2,600 |
| Attic insulation top-up (existing insulation) | $900 – $1,700 |
| Attic insulation replacement (removal + new) | $2,200 – $3,800 |
| Attic baffles and ventilation prep | $300 – $900 |
These are real ranges for Clovis work, not national averages. Your exact number depends on attic square footage, current insulation depth, how much air sealing we find, and whether you want a radiant barrier. The written estimate you get from us is the price you pay. Call (559) 785-2658 for a free estimate, and we’ll have a real person on the line.
In Harlan Ranch, our team responded to a 2004 single-story wood-frame where the original blown-in cellulose had settled to below R-19 in several bays. We air-sealed the top plates and can lights, then topped the whole attic to R-38 with Owens Corning AttiCat blown-in fiberglass that same day. One trip, one written price, one guarantee. That’s what “done right” looks like in Clovis.
We Also Serve Cities Near Clovis
Our Attic Insulation team works throughout the greater Fresno-Clovis metro area, and we regularly run jobs in Clovis as well as Fresno, Sanger, Madera, and Parlier. If you’re nearby in Parlier with a hot upstairs, we’ll get you the same written estimate and the same 365-day guarantee.
Serving Clovis, CA - Our Local Coverage Area
We’re based in the Clovis area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Attic Insulation in Clovis
The most common reason in Harlan Ranch specifically is settled blown-in cellulose. Original early-2000s installs in that subdivision have settled 30 – 40%, leaving uninsulated bands across the ceiling that let attic heat pour into the upstairs. We find this on thermal scans all summer. The fix is air sealing plus an R-38 top-up, usually done in one trip. Call (559) 785-2658 and we’ll confirm what’s in your attic with a free assessment.
No, if the old batts are dry, not full of rodent droppings, and not heavily compressed. We can top them with blown-in fiberglass to reach R-38. If they’re wet, moldy, or torn up from past pest activity, removal and replacement is the right call, and a typical Clovis replacement runs $2,200 to $3,800.
In Clovis summers, a radiant barrier typically cuts attic temperatures by 15 to 25 degrees and pays for itself in two to three seasons on a west-facing home. More insulation alone doesn’t stop radiant heat from entering the attic. For most Clovis homes, we recommend doing both, and the written estimate breaks them out separately so you decide what fits your budget.
Yes, garage wall insulation in a standard two-car Clovis garage is a one-day job for our crew. We insulate the walls, often seal the top plates and any penetrations, and then hang new insulation. Call
The most common need is baffle installation to keep new insulation from blocking soffit vents, followed by adding balanced exhaust at the ridge or roof peak. Older Clovis ranches often have gable-only venting that leaves dead zones. Ventilation work in Clovis runs $300 to $900 as part of an insulation project, and we’ll quote it in writing before any work starts.
Written by Glenn Hartley, Owner at Woolsey Insulation Fresno, serving Clovis and the surrounding Central Valley.
Why Clovis Chooses Woolsey Insulation Fresno
We set the standard for attic insulation in Clovis.
30-60 Min Response
Fast dispatch across Clovis. Same-day and after-hours emergency service available.
Licensed & Insured
Fully certified technicians who meet all local and state licensing requirements.
Upfront Pricing
No hidden fees, no surprises. You approve the price before any work begins.
Guaranteed Work
Every repair and installation is backed by our workmanship warranty and satisfaction guarantee.
How It Works in Clovis
Getting your attic insulation handled is simple and fast.
Call or Request a Free Estimate
Tell us about your attic insulation needs and we provide an upfront, transparent quote - no obligation, no hidden fees.
Licensed Technician Dispatched
A background-checked, certified technician arrives in Clovis - typically within 30-60 minutes, with parts stocked on the truck.
Problem Solved, Guaranteed
We complete the job to your full satisfaction, backed by our warranty and 100% satisfaction guarantee.
What happens when you call
- 1A real person answersNo phone trees - talk to a local attic insulation pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3A background-checked tech heads outLicensed & insured, typically same-day.
- 4You approve before work beginsNothing starts until you say go.
What Clovis Customers Say
Trusted by homeowners across Clovis and surrounding areas.
"Drafty old house that never felt comfortable. After the attic and some air sealing it's a different place. On time, clean, and the quote didn't change. Wish I'd done it years ago."
"Our old insulation was flattened and basically useless. They removed it, cleaned up, and blew in new. Furnace isn't running constantly anymore and the first bill already showed it."
"Showed up on time, laid down protection on the floors, and were careful going into the attic. Explained exactly what they were doing and why. House holds its heat so much better now."
Our Work in Clovis
A look at recent insulation projects across Clovis and surrounding areas.
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