Air sealing services in Cerritos CA - fewer drafts and a cooler upstairs
Drafty rooms or a hot upstairs even with insulation up there? We find where air gets in and close it, in the right order.
Why is my house still drafty with insulation in the attic?
Air sealing in Cerritos means finding the cracks, holes and gaps where air moves in and out of your house and closing them, so outside air stops slipping past the insulation and your heating and air system isn't fighting a draft all day.
Most people call us about a room over the garage that won't cool down, cold floors in winter, or a power bill that stays high after someone already added insulation. In my years as a heating and air tech I kept finding good equipment working hard in houses like that, and the cause was usually air leaking up through gaps in the ceiling that the insulation sat right on top of. If your insulation is thin or crushed too, we can pair the sealing with attic insulation.
The price turns on how many leaks there are, how hard they are to reach, and how much old insulation has to be pulled back to get at them. The schedule turns on your attic access and on what the city says about permits, and the written estimate I leave you lists each step in the order we'd do it. California licenses contractors for insulation work, so when a job adds insulation you can ask to see the license, and we're fully licensed and insured.
- We seal around can lights, plumbing vents, exhaust fans, flues, wiring holes and duct openings in the attic.
- Old insulation gets pulled back where it covers a leak, so no gap gets sealed blind.
- Before sealing, we check for old knob and tube wiring, vermiculite, roof leaks and fans venting into the attic.
What happens after you call us about air sealing in Cerritos?
I do the visits and write the estimates myself, and our installers do the work. Here's how a job usually runs, from your first call to the walk-through at the end.
Call or send us a message
Call (562) 307-9067 or use the form, and mention how you get into your attic and whether you have a gas furnace, water heater or fireplace. We'll get back to you and set a time for me to come out.
I inspect, measure and photograph
I go through the attic, walls or crawl space, measure and take photos of what I find. You get a written estimate that lists each step in the order we'd do it, so you can see what you'd be paying for before you decide.
Our installers seal the leaks
Our installers protect the house and do the sealing during the hours Cerritos allows, 7 a.m. to 6 p.m. on weekdays and 10 a.m. to 5 p.m. on Saturdays. The city allows no work on Sundays or city holidays unless it approves otherwise in writing, so we plan your dates around that.
I check the finished work
I look over the finished job myself before we call it done. Then I go over it with you, so you know what was sealed and where.
Attic sealing and insulation work, up close
These photos show the kind of attic and wall work the insulation trade does, from sealed gaps around pipes and lights to fresh insulation laid over them. They show the work in general, not particular houses.
A gloved hand sprays foam insulation from a hose-mounted gun onto a surface already covered in white foam.
White spray foam coats the roof underside in an attic with exposed wooden trusses and yellow insulation batts.
A worker wearing protective gear uses a pink hose to blow insulation across an attic floor between wooden rafters.
Wooden roof trusses stand before white spray foam coating the roof and walls of an unfinished home.
An unfinished home interior with exposed wooden roof trusses and wall framing beneath the roof.
A garage with tan batt insulation fitted between exposed wall studs and a raised garage door.
Get a written air sealing estimate for your Cerritos home
Send the form and we'll reply within one business day to set a time for me to come out. The on-site estimate is free, comes in writing with each step in order, and carries no obligation.
(562) 307-9067Questions Cerritos homeowners ask about air sealing
These are the questions I hear most from homeowners in Cerritos about air sealing. If yours isn't here, ask it when you call, and I'll answer it at the visit.
What does air sealing do for my house?
Air sealing cuts drafts, takes strain off your heating and cooling equipment, lowers the energy bill and keeps out moisture that can lead to mold. That's why a house with plenty of insulation can still feel drafty until the gaps under it are closed.
How do I find air leaks in my attic?
The most reliable way is a blower door test, a fan set in a doorway that draws air in through every gap, along with a thermal camera, done by a certified home energy auditor. A do-it-yourself search usually misses the small leaks, especially the ones buried under layers of insulation, so that's where I look closest on my visit.
Is air sealing safe if I have a gas furnace or fireplace?
Yes, when the fresh air check comes first. The usual first step before any sealing is working out how much fresh air the house needs, for the people in it and for fuel-burning furnaces, stoves and fireplaces, because an appliance short on oxygen can release carbon monoxide into the house. Combustion air ducts, the openings that feed those appliances, are meant to stay open, and we leave them that way.
How much does air sealing cost in Cerritos?
Attic air sealing done before new insulation usually costs about $350 to $2,350 per job in the Los Angeles area. That's what the work generally runs around here, not our price, and where your house lands shows up on the written estimate after I've been in your attic.
What is the best order for air sealing and new attic insulation?
Seal first, then insulate, because that order gets the most energy savings out of the new insulation. If you're planning new attic insulation, we can schedule the sealing as the first stage of the same project.
What should an air sealing quote include?
One industry standard says that when air sealing is recommended, the work should include a blower door test before and after, so it's fair to ask whether a quote has both. Our estimates list every step in order, so you can see what's in ours and ask about anything you expected to find there.
Air sealing services in Cerritos and nearby cities
Cerritos requires permits for renovations, but its list doesn't name air sealing, so before we set a start date we check with the city's Department of Community Development at (562) 916-1201 and handle any permit and inspection. We find the same leaky ceilings in Norwalk and Lakewood homes.