Air sealing services in Laguna Niguel CA - a tighter house that stays safe
Drafty rooms, a hot upstairs and dust that keeps coming back usually trace to hidden gaps we find, seal and test.
- Fully licensed and insured.
- Free on-site estimates.
- We respond within 1 business day.
What does air sealing do for a drafty house?
Air sealing services in Laguna Niguel close the gaps, cracks and holes between the rooms you heat and cool and the attic, crawl space and walls around them, using caulk, foam or spray sealant. A tighter house can mean lower heating and cooling bills, fewer drafts, and less dust, pollen, moisture and pests getting in.
Most people call me because the room over the garage stays hot all summer, the power bill keeps creeping up, or there's a dark line of dust around a ceiling vent, and most of the time that's air moving through gaps nobody sealed when the house was built. The price moves with how many leaks we find, how hard they are to reach and how much old insulation sits on top of them, and the schedule turns on any appliance fix that has to come first and on whether the city wants a permit, so I'd rather look before I guess. In a lot of homes the worst leaks are overhead, which is why attic air sealing is where many of these jobs start.
How our air sealing service works
I start by measuring how leaky your house is and checking any gas appliance that vents on its own, like an older water heater or furnace, so a tighter house stays a safe one. Our crew then seals the gaps we found, with caulk or foam on the narrow ones and a stiff piece of blocking sealed in place over the big ones, since sealant alone won't bridge a wide hole. We leave the eave, ridge and gable vents and any combustion air ducts open on purpose, because those openings have to move air to work, and burying them is how moisture ends up in the framing. When we're done we run the test again, so you can see the change instead of taking my word for it.
Sealing is often one part of a bigger job. I'll usually tell you that sealing the gaps and topping up the loose fill is the better buy, but when your ductwork lives in the attic, closed-cell foam insulation, a dense foam that also blocks moisture, earns its higher price by sealing and insulating in one layer. If the drafts and cold floors come from below, we pair the sealing with basement insulation so that space stops feeding air into the rooms above.
Sealing before new insulation
This suits you if you're about to add or replace attic insulation, since the gaps are open and easy to get at before anything covers them. If the old material is soaked or full of droppings, I'll tell you it has to come out first rather than seal around it and leave the problem in place.
Sealing an attic that's already insulated
This suits a house with decent insulation that still feels drafty, because the leaks are hiding underneath it. We pull the material back at each leak, seal it and lay it back level, edges included, so the eaves don't end up thin.
Air sealing permits and testing in Laguna Niguel
Laguna Niguel's Building & Safety Division sets building standards for every house in the city and handles permits and inspections, but its permit list names new construction, additions, renovations, alterations and remodels, not air sealing. That list doesn't settle whether your job needs a permit, so I check with the city's building office before we start, and when a permit applies we take care of the application and line up the inspections. It matters for testing too, because the state's Energy Commission says HERS testing, the state's home energy rating checks, may be required depending on the work, and properly permitted work is what triggers it.
Around here most of what we seal is overhead, in attics that carry the ductwork and over garages and recessed lights, and in many of these houses the attic hatch has never been sealed at all. We're based in Laguna Niguel and work across south and coastal Orange County, so we see the same houses on jobs in Aliso Viejo and Mission Viejo, and if your city isn't on our list, just ask.
Why Laguna Niguel homeowners call Laguna Niguel Insulation & Spray Foam for air sealing
I walk your house myself
I usually come out for the walk-through and estimate myself, and I take photos so I can show you each leak instead of asking you to trust me. Our own small crew does the work, and I check in on the job and come back for the final look with you.
Doing this work properly since 2013
Years of upkeep for a property management company put me in a lot of attics and showed me what rushed insulation work looks like later, so I started this business in 2013 to do it right. In 13 years I've found that a homeowner who understands each step can spot a shortcut, and our work shouldn't have any.
Licensed and insured for your job
We're fully licensed and insured. California's weatherization license class covers caulking and weather stripping but not insulation or heating and air work, so it's worth asking any contractor which parts of your job their license covers.
If you'd like to know where your house is leaking before you spend anything, send us a message or call (949) 312-6098 and I'll come take a look.
Request a quoteGet a free air sealing estimate, with photos of what I find
We reply to every call and message within one business day. The estimate is free, done in person at your house and comes with no obligation. Once you send the form, we'll set a time for me to come out and walk the space with you.
What happens after you call about air sealing in Laguna Niguel
Call or send a message
Call (949) 312-6098 or use the form, tell us what you're noticing, and we'll set a time for me to come out. We take calls until 9 PM on weekdays and 10 PM on weekends, so you don't have to call from work.
I look at the space with you
I go through the attic and any crawl space with you, take photos and point out where air is getting through. You then get a written estimate that lists the prep, the safety checks and the order of the work, so you know exactly what you're paying for.
We seal, clean up and retest
On the day, our crew protects your home, seals the gaps, cleans up and runs the leak test again so you can see the change. Then I walk you through what was done and why.
Frequently asked questions
How much does air sealing cost in Laguna Niguel?
Your price comes from the written estimate after I see the house, because it depends on what's actually up there rather than a flat rate. Sealing a house whose insulation is in good shape keeps the job small, while removing soaked or dirty insulation first, fixing an appliance that fails the safety check or adding new insulation afterward raises the total.
What causes drafts in my house even with insulation in the attic?
Drafts usually come from gaps around light fixtures, the duct boots where ducts meet a room, wiring, plumbing pipes and flues, which let air slip right past the insulation. Those gaps sit underneath where you can't see them, which is why I take photos in the attic to show you each one.
Can air sealing make my gas water heater or furnace unsafe?
It can in some cases, because a fuel-burning appliance that vents on its own may pull its exhaust gases back into your home once the house is tighter. A national air sealing checklist calls for a combustion safety test in homes with that equipment and for fixing any problem before sealing goes ahead, which is why that check comes first on our jobs.
Should I seal or insulate the attic first?
Seal first and insulate second, because fiber insulation like fiberglass or cellulose slows heat but isn't an air barrier, so air keeps moving through it if the gaps underneath stay open. If your attic has vermiculite, a loose gray-brown pebbly fill, ENERGY STAR advises leaving it undisturbed until an approved lab tests it and finds no asbestos, so we don't touch it before then.
What is a blower door test, and how do I get ready for one?
A blower door test sets a strong fan in an outside door to measure how leaky your house is and gives a target for how tight it should get. The fan can pull dirt and pollen inside and has been known to lift vinyl flooring that isn't glued down, so let us know about any loose vinyl before test day.
Who handles building permits for air sealing in Laguna Niguel?
The city's Building & Safety Division handles permits and inspections in Laguna Niguel, and as I covered above, its list doesn't settle whether an air sealing job needs one. The state's Energy Commission says a contractor should understand the permit rules and be able to explain them to you, so ask anyone you're considering how they'll handle it, and I'll walk you through how we'll handle yours.
Other work that often goes with air sealing
Basement insulation
Worth a look if cold, damp air is rising from a space under the house and into the floors you walk on.
Closed-cell foam insulation
A good fit when ducts run through a hot attic and you want the seal and the insulation done in a single dense layer.
Laguna Niguel, CA
Book your air sealing walk-through today
Before you call (949) 312-6098, jot down any gas appliances, what kind of insulation is in the attic now and any insulation work you're planning, so I can plan the testing on the first visit.