Air sealing services in Lynwood CA - gaps closed before the insulation goes in
Drafty rooms and a hot upstairs usually come from hidden gaps in the attic. We find them and seal them shut.
- Fully licensed and insured.
- Free estimates at your property.
- We reply within 1 business day.
What does air sealing actually fix in a Lynwood house?
At Lynwood Spray Foam Insulation, our air sealing services in Lynwood close the gaps where pipes, wires, ducts and fans pass through your ceiling and walls, so the air you pay to cool or heat stays in the house and your insulation can do its job.
Most people call because the upstairs is hot, the room over the garage never feels right, or the power bill keeps climbing even after someone added insulation. Insulation slows heat but doesn't stop air from moving through it, so if the holes underneath stay open, new attic insulation just ends up fighting a draft. The price moves with how many gaps there are, how cramped the attic is and how much old insulation has to be moved or hauled out to reach them. The schedule depends on whether anything has to be fixed first and whether the work needs a permit, and I'll put your price and the order of the work in a written estimate once I've seen your attic. If you're comparing contractors, keep in mind that California only lets someone without a contractor license take a job up to $1,000, and only when it needs no permit and they have nobody working for them.
How do you know your house is leaking air?
Hot upstairs, cool downstairs
When the upstairs bedrooms or the room over the garage stay hot after the AC has run for hours, attic air is usually leaking in around the ceiling. The longer that goes on, the more you pay to cool rooms that won't stay cool.
Dark streaks on old insulation
Gray or black smudges on attic insulation around pipes, wires and ceiling lights mean air has been moving through that spot, leaving dust behind the way a filter does. That leak keeps pulling dusty attic air into your rooms until someone closes it.
Drafts at outlets and fixtures
If you feel air at outlets, light fixtures or the attic hatch, the house has open gaps where things pass through the walls and ceiling. Insulation laid over them without sealing first is fighting a draft from the day it goes in.
How our air sealing services work
We start by looking for anything that has to be sorted out before sealing, like roof leaks or dirty old insulation, because sealing over a problem just hides it for the next person. Then we pull back the old insulation where the gaps hide and close the holes around pipes, wires, ducts, fans, ceiling lights and the hatch, including the hard ones buried where nobody could see them from the hatch. If the old insulation is soaked or full of droppings, it comes out instead of getting covered up. The soffit, ridge and gable vents stay open, since the attic needs them to breathe and closing them traps moisture in the framing.
Air sealing usually sits next to other work. If your house has a basement, we often seal the band of wood on top of the foundation wall as part of basement insulation. Where the ducts run through the attic, I'll usually point you toward closed-cell foam insulation, a dense foam that blocks moisture, because it seals and insulates at once and keeps the ducts out of the attic heat. Foam costs more, though, so in an attic with no ducts I'd rather seal the gaps and top up the loose fill.
Seal the gaps, then top up loose fill
This suits most attics with no ductwork, because it closes the leaks and then adds blown-in insulation, loose fill blown through a hose, for less than foam would cost. We spread it evenly out to the edges, where attics usually come up thin.
Seal and insulate with foam
This suits an attic where the furnace or ducts live, because sprayed foam closes the gaps and insulates in the same pass. It's the bigger spend, so we only suggest it when what's up there makes it worth it.
Get a written air sealing plan for your attic
Send the form and we'll reply within one business day to set a time. I'll come look at your attic in person, and the written estimate is free with no obligation.
(424) 338-0203- Based in
- Lynwood, CA 90262
- Hours
- Mon–Sun: 7 AM–11 PM
What happens after you call about air sealing in Lynwood
From the first call to the final walk-through, here's who does what and what you'll have in hand before any work starts.
We set a visit time
When you call, I set a time to come out and look at the attic, crawl space or walls with you before I price anything. If you already know about a tight hatch or an old roof leak, tell me then.
You get a written estimate
The estimate says in writing what needs fixing first, what goes in and what comes out. You know what you're paying for before we start, and you can take your time deciding.
We seal, then walk it
On the job we cover your floors and paths and do the prep in order before any sealing starts. Before we pack up, I walk the finished space with you so you can see what got closed and what stayed open on purpose.
Why Lynwood homeowners call us for air sealing
I look at your attic myself
I come out to look at the job and write the estimate, and then our small crew does the work with me on site running it. The person who saw the problems is the one making sure they get handled in order.
Built around homes people live in
I spent my early years insulating new houses with wide-open walls, and in 2023 I started this business to work in lived-in homes in Lynwood and the cities around it. Those are the attics with old wiring and whatever the last crew left behind, and finding a buried leak there takes patience.
Fully licensed and insured, every attic
We're fully licensed and insured, and that matters when people are crawling across ceiling joists over your living room. If there's an accident up there, it goes to our insurance, not to you.
What matters most is that nothing gets sealed over a problem. When you're ready, tell us about your attic or call (424) 338-0203.
Air sealing and attic work in Lynwood
In Lynwood, the city's Building and Safety Division issues building permits for construction, alterations and repairs, and it sends inspectors out to check the work against the codes that apply. That doesn't settle whether a sealing job on its own needs a permit, so it's a question for the city once your scope is clear. When a job does need one, we pull it with the city and set up the inspections. If your household meets the CARE or FERA income limits, look at the state's Energy Savings Assistance program before you pay for basic work, because it offers no-cost weatherization like weatherstripping and caulking.
Many houses around here are older homes with low, tight attics, wiring from decades back and layers of insulation from earlier jobs, so the worst leaks are usually buried where nobody looked. We see the same kind of attics on jobs in South Gate and Compton, and we take the same slow approach to pulling it all back.
Questions about air sealing in Lynwood
How much do air sealing services cost in Lynwood?
There's no set price, because the cost comes from what's in your attic, and I'll give you a number in writing after I've seen it. Sealing and topping up loose fill costs less than foam, and hauling out soaked or dirty insulation adds to the job. A roomy attic with clean insulation keeps the cost down.
How do I find air leaks in my attic?
You can find and seal obvious leaks yourself, like gaps around pipes and wires you can see, but small leaks buried under layers of insulation are hard to spot. Home energy assessors find those with a blower door test, a big fan that pulls air through the house, and infrared camera images, and that's why attic jobs usually call for a trained professional.
Should air sealing come before new attic insulation?
Yes, sealing should be finished before insulation goes in, once any gas appliance safety and indoor ventilation problems are fixed and the attic's own ventilation is sorted out. If you're planning to add attic insulation, schedule the sealing just ahead of it so the gaps are still easy to reach.
Is air sealing safe if I have a gas furnace or water heater?
Yes, as long as the appliances get checked. ENERGY STAR suggests having a Home Performance Contractor test that oil or gas appliances vent their exhaust properly before and after sealing, because a tighter house can sometimes push those gases back inside. ENERGY STAR also calls for special high-temperature caulk, not spray foam, around the flue, the pipe that carries the exhaust out, and I'll ask about your appliances when I come out.
What attic problems need fixing before air sealing?
Wet insulation, moldy or rotted framing, and kitchen, bath or dryer vents that empty into the attic should be fixed first, and the same guidance recommends a professional for them. Little or no attic ventilation and old knob and tube wiring, which can be a fire hazard when insulation touches it, are on that list too. We sort those out, or tell you who should, before we seal anything.
How do I know if my attic has vermiculite insulation?
Vermiculite looks like light, pea-size, flaky gray pebbles, and because it may contain asbestos, nobody should disturb it until an approved lab has tested it. Your local health department can name a lab, and if you think you've seen it, mention it when you call so we can plan around it.
Related services that often go with air sealing
If your house sits over a basement, insulating its walls keeps cool, damp air from rising into the rooms and cold floors above it.
When ductwork runs through a hot attic, dense foam sprayed on the roof deck seals and insulates in one pass, and it holds up against moisture too.
Service areas for air sealing near Lynwood
Lynwood Spray Foam Insulation is based in Lynwood, California, and the 12 cities listed here, including Paramount and Downey, each have their own page. We also work in many of the nearby cities and county areas that aren't listed.
Lynwood, CA
Have us check your attic for leaks
If you jot down where your gas furnace and water heater sit, how you get into the attic and any roof leaks you've noticed, the first visit goes quicker.