Retrofit insulation in Glendale CA - an older house that stays comfortable
Hot upstairs and a high power bill in an older house? We seal the gaps and add insulation around what's there, so rooms stay comfortable.
Request an estimate
Does my older Glendale house need more insulation?
Retrofit insulation in Glendale means adding insulation to a house that's already built. Usually that's blown-in insulation, loose fill blown through a hose across the attic floor, so the rooms underneath stay more comfortable.
Most of the calls I get come from older houses and from folks who just bought one, where it's hot upstairs, the room over the garage is drafty, and nobody's looked in the attic for years. The price depends on the size of the attic, how many inches are already up there, whether old material has to come out first through insulation removal, and how many gaps, can lights and pipes need sealing. The schedule depends mostly on whether anything has to be removed or checked before new insulation goes in. Once I've been up there, the estimate tells you what your house needs and what it will cost.
How we handle retrofit insulation
Older homes around here usually have a mix of old insulation, can lights and past fixes, so we look at all of it together and build the upgrade around what the house already has. I start by checking how deep the old material is and whether it's clean, soaked or full of droppings, because fresh insulation laid over a problem just buries it. Then our crew does air sealing, which means closing the gaps around pipes, wiring holes and the attic hatch so the new insulation isn't fighting a draft. After that we blow in loose fill to an even depth and keep the edges as full as the middle, since the edges are where coverage usually runs thin.
If your furnace or AC ducts run through the attic, spray foam insulation at the roofline can be worth it, because foam seals air while it insulates and keeps the ducts out of the worst heat. It costs more, though, so for most houses I'd seal the gaps and top up the loose fill instead. If the attic is your only trouble spot, our attic insulation work handles that on its own.
What retrofit insulation means for Glendale attics and permits
Most single-family homes in California have vented attics, and on a hot day a typical one gets hotter than the air outside. A poorly vented attic can get a lot hotter. The insulation on your attic floor is what keeps that heat out of the bedrooms, so we keep the eave vents clear when we blow in new fill, which lets the attic breathe and keeps moisture out of the framing. We're based in Glendale and work in the cities around it, from the foothills out across the San Gabriel Valley, and we find the same hot attics on jobs in Burbank and Pasadena.
Glendale's online permit portal handles simple residential permits for re-roofs, electrical, plumbing and mechanical work. Retrofit insulation isn't on that list, so the list doesn't tell you whether your job needs a permit. We check with the city or county building office for your address. If your job needs a permit, we pull it, set up the inspection and put in writing who's handling it.
- Call (747) 372-8156
- Mon–Fri: 6 AM–11 PM, Sat–Sun: 7 AM–11 PM
- Glendale, CA 91206
What happens after you call us about retrofit insulation
Call and talk it through
You call (747) 372-8156, and most of the time I pick up myself. We set a time for me to come out that works around your day.
I look with a flashlight
I go up in the attic or under the house and walk you through what I find before I write anything up. The estimate spells out what your house needs, what it doesn't and the price, so you only pay for work that makes a difference.
Our crew does the work
Our crew lead and installers do the job, and they cover the path to the attic and clean up as they go. Before we start, we'll tell you whether you need to step out and when it's fine to come back in.
We look it over together
When the crew is done, I come back and go over the work with you before we pack up. You can see the depth at the edges and around the hatch for yourself.
Why Glendale homeowners call WeatherFit Glendale Insulation Company for retrofit insulation
We take our time at estimates
We're best known for slowing down at the estimate and explaining what's really going on in the attic or under the floor. There's no silly question, and I'll tell you straight when a step isn't worth paying for.
Learned it in attics with Dad
I learned insulation as a teenager, crawling through attics with my dad, and I started this business in Glendale in 2021. He taught me that insulation is the job nobody sees but the family lives with every day.
Licensed and insured in California
Licensed and insured. California's contractor license board counts anyone who installs insulation for heat or sound control as an insulation contractor, so this is licensed trade work and you should hire for it that way.
If it's hot upstairs or you've never looked in your attic, send us a note or call (747) 372-8156 and I'll come take a look.
Request an estimateGet a free on-site estimate for retrofit insulation
We get back to you within one business day to set up a visit. I come out, look over the attic or crawl space with you and write up a free estimate, and there's no pressure to book.
- Licensed and insured.
- Phone
- (747) 372-8156
- Location
- Glendale, CA 91206
- Hours
- Mon–Fri: 6 AM–11 PM, Sat–Sun: 7 AM–11 PM
Questions about retrofit insulation in Glendale
How much does retrofit attic insulation cost in Glendale?
Attic insulation in the Los Angeles area usually costs about $1,600 to $5,300 per job. That's the typical range for the area, not our price. I'll give you your own number in writing once I've been up in your attic.
Should air sealing come before insulation in an older house?
Yes. Money spent on insulation can be wasted if the holes and gaps in the ceilings, walls and foundation aren't sealed first. Since the attic is open for the insulation anyway, it's the right time to seal it, so we plan both as one job.
Is it safe to insulate around old wiring or recessed lights?
It can be, once you know what's up there. Insulation packed around older wiring, mainly knob-and-tube, can make the wiring overheat and become a fire hazard, so I check what runs through your attic before we choose the work. One insulation maker's guide says to keep insulation off recessed lights unless the fixture carries an IC rating, which means it's built to touch insulation, and I'll show you which of yours have it.
Do California energy rules apply when I add attic insulation?
They can. The California Energy Commission says its attic insulation and air sealing requirements for vented attics apply when the ceiling over heated or cooled rooms is altered, and adding or replacing attic insulation may count as altering it. We sort out which rules apply to your job when we check with the building office.
What is the gray, pebble-like insulation in my attic?
If it's gray-brown or silver-gold and pours like little pebbles, it's probably vermiculite, and the EPA advises assuming it may contain asbestos. Leave it alone and mention it when you call, because it has to be planned for before anyone adds or replaces insulation up there.
How do I insulate a raised floor over a crawl space?
Floor insulation should sit tight against the underside of the subfloor with no air space in between. It usually needs support so it doesn't fall, sag or break down over time. Our crawl space insulation page goes into that work.
Other work that often goes with it
Spray foam insulation
Worth a look when your ductwork sits in the attic and you want the air seal and the insulation in one layer.
Attic insulation
For an attic that only needs more depth or a fresh start, without the wider look at the rest of the house.
Book a look at your attic insulation
If you've spotted recessed lights, older wiring or pebble-like insulation up there, mention it when you call (747) 372-8156 so I know what to check first.
Request an estimateCall (747) 372-8156