Insulation contractor in Downey, CA - fixing hot rooms at the source
Landmark Cudahy Spray Foam Insulation is an insulation contractor based in Cudahy that works on Downey houses, condos and small commercial buildings, sealing attics and crawl spaces, adding blown-in and spray foam, and removing old insulation.
- Licensed and insured.
- Free quotes on site.
- Expect a reply within 1 business day.
Insulating Downey houses and condos
Downey is mostly single-family houses on their own lots, with apartment and condo buildings mixed in, and we get calls from homeowners and landlords alike. It's a short drive from Cudahy, past South Gate on one side with Norwalk on the other, so the houses feel familiar to our crew. The calls I hear most are about a back bedroom that won't cool off, a room over the garage that turns into an oven by late afternoon, and an attic someone peeked into once and closed right back up.
In a lot of Downey attics I find a few inches of old insulation, packed down by stored boxes or torn up by rodents, sitting over gaps nobody ever sealed. How much is up there, whether the old material has to come out first and how easy the attic is to get around in move both the price and how long we're at your house, and I'll walk you through all of it when I come out.
What we insulate in Downey
Spray foam insulation
Spray foam earns its cost in Downey attics where the ductwork runs overhead, because it seals and insulates the roof deck in one pass.
Learn more about Spray foam insulationAttic insulation
Most hot-upstairs calls we get in Downey start in the attic, where we measure what's already up there before adding more.
Learn more about Attic insulationBlown-in insulation
In an open Downey attic, blown-in insulation, loose fill we blow through a hose, is usually the easiest way to build even depth.
Learn more about Blown-in insulationHome insulation
For a whole Downey house, I look at the attic, walls and floors together, since a draft in one spot can undo work elsewhere.
Learn more about Home insulationInsulation removal
Old Downey attic insulation that's soaked or full of droppings comes out first, so the problem doesn't stay buried under new material.
Learn more about Insulation removalCrawl space insulation
Raised-floor Downey houses with cold floors usually need insulation under the floor, fitted so it stays up and leaves room for plumbing repairs.
Learn more about Crawl space insulationWall insulation
Older stucco walls in Downey can have little or nothing inside, so we blow insulation in through small holes and patch them.
Learn more about Wall insulationAir sealing services
On drafty Downey homes we start with air sealing, closing gaps at can lights, pipes and the hatch before insulation goes in.
Learn more about Air sealing servicesBasement insulation
Not many Downey houses have a basement, but when yours does, we insulate the walls so it stops feeling like a cold cellar.
Learn more about Basement insulationClosed-cell foam insulation
Closed-cell foam, dense foam that blocks moisture, suits tight spots in Downey, like the floor over a garage or a damp crawl space wall.
Learn more about Closed-cell foam insulationOpen-cell foam insulation
Open-cell foam is softer and lighter, and it cuts noise as it seals, which suits a Downey bedroom wall facing a busy street.
Learn more about Open-cell foam insulationCommercial insulation
For Downey shops, offices and the apartment buildings landlords call us about, we plan the work around tenants and business hours.
Learn more about Commercial insulationCrawl space vapor barrier
Under a raised Downey floor, a vapor barrier over the bare dirt keeps ground moisture from soaking into the framing and insulation above.
Learn more about Crawl space vapor barrierVapor barrier installation
Where a Downey wall needs one, we put the vapor barrier on the right side, since the wrong side can trap moisture.
Learn more about Vapor barrier installationAttic air sealing
In Downey attics we seal the tops of the walls and around flues, then keep eave vents clear so the attic breathes.
Learn more about Attic air sealingRetrofit insulation
Retrofit means insulating a Downey house you live in, through the attic, crawl space and small wall openings, not torn-out drywall.
Learn more about Retrofit insulation
What Downey homes ask of insulation
Downey sits in energy code climate zone 8, except north of Vista Del Rio, which the city puts in zone 9, and those zones shape some of the building rules for work on your house. When a job needs a permit, we check which side of that line you're on so the work matches what the building office expects.
Many Downey houses we see are single story with the ductwork running through the attic, so a hot attic heats the air before it ever reaches your vents. That's where the foam-or-fill choice comes in. Sealing the gaps and topping up loose fill usually gives you the most for the money, but when the ducts live up there, I'd put foam on the underside of the roof, because it pulls those ducts onto the cool side of the house and that's worth the extra cost. The apartments and condos are a different job, with shared walls and tenants to work around, and we plan those with the owner before anyone climbs a ladder.
Get a free on-site insulation estimate in Downey
Tell us what's bothering you, a hot room, a draft or the power bill, and we'll reply within one business day. I come out myself, look at the space and walk you through what I find, with no obligation.
Downey insulation questions
How do I find out if adding insulation to my Downey house needs a permit?
Ask Downey's Building and Safety Division, which issues permits in the city, or let us ask for you. The city's own wording says that generally new construction, additions, alterations and repairs need a permit, and its examples are things like re-roofs, remodels and pools, not insulation by name, so we check with that office for your address before we start. When a permit is needed, we handle the paperwork and line up the inspection.
Does an insulation contractor need a business license to work in Downey?
Yes, the city requires a business license for any kind of business done in Downey, and that includes contractors whose offices are in another city. A contractor pulling a permit there also needs a current Downey business license, which can be paid for when the permit is issued, so it's a fair thing to ask anyone you're comparing.
Can I pull my own permit for insulation work on my Downey house?
You can if you live in the single-family house the permit covers, since Downey issues permits to owner-builders in that case as well as to California licensed contractors. For duplexes, apartments, condos, townhomes and commercial buildings, the city issues permits only to licensed contractors, which matters if you're a landlord, and in every case the permit comes before the work starts. We're licensed and insured, so we can take that part off your plate.
What building code applies to insulation work in Downey?
Downey works from the current California codes along with its own local amendments, which are changes the city makes to the state codes. When a job needs a permit, the inspection looks at the work against both, so we plan around them from the start.
How much does it cost to insulate an attic in Downey?
I can't give you a real number until I've been up in your attic, because no two Downey attics I open are set up the same. Beyond the size of the space, the price climbs with every can light, pipe and flue we have to seal, and with foam instead of sealing and loose fill, the trade-off covered above. I'll go through each of those with you when I come out.
How long do we have to stay out of the house after spray foam insulation?
The foam maker sets that wait, called the re-entry time, which is when people and pets can come back inside. With blown-in loose fill most families stay home, but with spray foam you'll be out while it's sprayed and until that time has passed, and I'll tell you the wait for the product we're using before we book the job.
Got a hot room in Downey?
I'll come out, look at the attic or crawl space in person and walk you through what I found.
Other cities we work in
Live outside Downey? Call (213) 338-1994 or use the form, because we work in many cities around Cudahy, listed or not.