Insulation Contractor in Gardena, CA - Cooler Rooms and Sealed Attics
D&J Hawthorne Insulation Services is an insulation contractor working in Gardena, CA. We clear out tired attic insulation, seal the gaps around lights, pipes and hatches, and insulate attics, walls and crawl spaces in homes and shops across the city.
- Service area
- Gardena, CA
- Call
- (424) 307-8033
Older houses and shops across Gardena
We're an insulation contractor in Hawthorne, CA, right next door, so Gardena is one of the closest cities we work in, along with nearby Torrance and Lawndale. Most of our calls here come from single-story stucco houses built after the war, the kind with a low roof and an attic you crawl through on your knees. We also get calls from apartment owners and from the shops, offices and light industrial buildings along the bigger streets.
Those low attics shape the job. They're tight to work in, the old insulation is often packed down to a few inches, and the ducts usually run through them, so I look at what's up there and what's leaking before I price anything new. The attic's size, how hard it is to reach and whether old material has to come out first are what move the price and how long we're there, and your written estimate spells that out for your house.
Our services in Gardena, CA
Plenty of Gardena attics are down to a few inches of old, flattened fill, so we top them up with blown-in insulation, loose fill blown through a hose that reaches the tight corners under a low roof. We lay it even across the whole attic and hold it back from the eave vents so the attic can still breathe.
In older ceilings the can lights, plumbing pipes and attic hatch usually leak air, and new insulation can't do much while a draft runs through it. Our crew closes those gaps with foam and caulk before any insulation goes in, because that's the step that lets the insulation do its job.
When old insulation has been soaked by a roof leak or filled with rodent droppings, laying new material over it just hides the problem. We bag it out and clean up, and I tell you about the leak or the wiring we found so it gets fixed before anything new goes in.
Houses on a raised floor often have cold floors because nothing sits between the subfloor and the open crawl space under it. We check for moisture down there first, then fit insulation between the floor joists and hold it in place so it doesn't sag.
A lot of older stucco houses were built with little or nothing in the outside walls, which is why a corner bedroom can feel drafty even under a full attic. We can fill those wall cavities through small holes and patch them, and I'll tell you at the estimate whether your walls are worth doing.
Gardena's shops, offices and light industrial buildings often have bare roof decks and metal walls that let the inside heat up and cool off fast. We plan the work with you so it fits around your business and your people can keep working.
Every service we offer
Spray foam insulation
Attic insulation
Blown-in insulation
Home insulation
Insulation removal
Crawl space insulation
Wall insulation
Air sealing services
Basement insulation
Closed-cell foam insulation
Open-cell foam insulation
Commercial insulation
Crawl space vapor barrier
Vapor barrier installation
Attic air sealing
Retrofit insulation
What happens when you call us from Gardena
Call us or send the form
Tell us what's going on, whether it's a hot room, a drafty house or a power bill that keeps climbing. We set a time for me to come out that works around your day.
I look at the space
I come out myself, check the attic, walls or crawl space, and note how many inches are already up there and what shape they're in, so it helps if you're home to see what I find. You get a written estimate with the price, the plan and anything that should be fixed first, so you know the cost before you decide.
Sort out permits and dates
If your job needs a permit, we pull it and set up the inspections with the city. Gardena says simple over-the-counter permits, like water heaters, usually come back in about three business days, so we book your date around that.
Install, then walk it together
On the day, the crew covers your floors and belongings, seals the leaks, then puts the insulation in. I check the work before we call it done and walk the finished job with you, so you can see what you paid for.
Gardena insulation questions answered
Do I need a permit to insulate my attic in Gardena?
Ask the city first, because Gardena's list of permit work names jobs like re-roofs, electrical upgrades and window change outs but doesn't settle insulation either way. Building Services issues permits for most repairs and alterations in the city, and if your job needs one, we pull it and set up the inspections before work starts. It's worth checking, since the city quadruples the fees when permit work starts before the permit is in hand.
Does an insulation contractor need a license to work in Gardena?
Yes, two kinds. The state contractor board requires a contractor's license for any job that needs a building permit, uses employees or runs $1,000 or more in labor and materials combined, and Gardena requires a city business license from every contractor who works in the city, even one based somewhere else. We're fully licensed and insured, and I'm glad to answer any question about it.
How much does it cost to insulate an attic in Gardena?
It depends on your attic, so I don't give a price until I've been up there. The size and how easy it is to reach, whether old insulation has to come out, how many gaps need sealing, and whether you choose loose fill or foam, which costs more, move it most. Your written estimate lists each of those for your house.
How long does attic insulation take, and do we have to leave the house?
For most loose-fill jobs you can stay home, and how long we're in the attic depends mostly on whether old material comes out first and how much sealing it needs. Spray foam is different, because the foam maker sets the re-entry time, the wait before you, the kids and the pets can come back inside. I'll give you both answers for your job before we book anything.
What is the best way to insulate an older house in Gardena?
Seal the gaps first and then top up with loose fill, which usually beats foam for the money unless your heating and cooling ducts run through the attic. Foam costs more but seals air while it insulates, so sprayed under the roof it brings those ducts inside the insulated part of the house. I'll look at where your ducts are and tell you which way I'd go and why.
What causes one room in my Gardena house to stay hotter than the rest?
Usually it's a thin patch of insulation above that room, or gaps around a light, a pipe or the hatch that let attic air leak straight in. Coverage often runs deep in the middle of an attic and thin at the edges, right over the outside rooms, which is backward. When I come out, I check that room's ceiling from above.
Get a written insulation estimate for your Gardena home
Send the form or call, and we'll get back to you within one business day to set a time. I come out to your Gardena home myself, look at the space and put the price and the plan in writing. The estimate is free, and there's no pressure to book.
- Call
- (424) 307-8033
- Location
- Hawthorne, CA 90250
- Hours
- Mon–Fri: 8 AM–11 PM, Sat–Sun: 7 AM–11 PM
Tell us about your Gardena project
Our phones are on into the evening every day of the week, so call (424) 307-8033 after work and ask about permits while you're at it.