Drafty rooms and cold floors
When a room feels drafty or the floor stays cold, outside air is usually slipping in somewhere you can't see, and closing those gaps is often what makes the room comfortable again.
Air Sealing Services in South Pasadena CA - rooms that stop feeling drafty
Cold drafts, a hot upstairs or a power bill that keeps climbing usually trace back to hidden leaks we can find and close.
- Licensed and insured.
- Free quotes on site.
- We respond within 1 business day.
What air sealing does for your house
Air sealing services close the gaps that let outside air into your South Pasadena house. Rooms stop feeling drafty, your heating and cooling don't have to work as hard, which shows on the power bill, and less moist air reaches the wood, where it can warp framing and feed mold.
The price mostly turns on how much attic there is to reach, how much old insulation has to be moved aside to get at the leaks, and how many pipes, wires and lights pass through the ceiling. Older houses tend to have more of all three. The schedule turns on what we find first, because a roof leak, old wiring or soaked insulation has to be handled before anything gets sealed. Your free estimate puts the work in writing so you can compare it fairly.
We're based in South Pasadena and work in Pasadena, Alhambra, Glendale and the other cities around it, and we check the building rules for whichever city your home is in. Here, the city's Building Division issues permits for altering buildings and inspects permitted work, so we check with that office about your job, and when it needs a permit we handle the application and set up the inspection. The city also requires every contractor and subcontractor working in South Pasadena to hold a city business license, which is a fair thing to ask about before you hire anyone. We're licensed and insured. The state licensing board's weatherization class covers weather stripping and caulking but not insulation or heating and air work, so that license by itself stops short of the insulation side of an attic job.
Explained before anyone climbs up
I want you to understand what you're paying for before anyone goes into your attic, so I walk you through each part of the written estimate and what it fixes.
I estimate and walk the job
I come out to look at the job and write the estimate, our install crew does the work, and I walk the finished job with you before we call it done.
Commercial habits brought home
I learned the trade on crews doing offices, warehouses and metal buildings, and I started this business in 2023 to bring that same order and care into people's homes.
How we find and seal the leaks
Some drafts are easy to fix yourself, and I'll tell you which ones so you aren't paying us for work a tube of caulk could handle. What we go after are the leaks you can't see, the ones in the attic floor where air moves between your rooms and the attic, often under inches of old insulation. Before anything gets sealed, our crew checks the attic for live knob and tube wiring, the old wiring strung on ceramic posts, for vermiculite, a pebbly gray-brown loose fill, for roof leaks and for bathroom fans that blow into the attic instead of outside, because each of those has to be dealt with first.
We also leave some openings alone on purpose. Soffit, ridge and gable vents let the attic breathe, and combustion air ducts feed your gas appliances, so closing them would cause the very moisture and venting trouble we're trying to prevent. Before we close anything up, I look at how your gas appliances vent and how the house gets fresh air, which the questions below explain.
Most leaks close with caulk or foam sealant, and then we top up the loose fill over them. Closed-cell foam insulation, a dense foam that blocks moisture as it seals, costs more, and I usually recommend it only when the ductwork runs through the attic. If your house has a basement, the framing that sits on the foundation walls leaks too, and we can seal it along with basement insulation.
Where air sealing makes a difference
A hot upstairs or garage room
Rooms upstairs and the room over the garage often run hot because attic air leaks down into them, so sealing the attic floor matters before anyone adds more insulation.
Before new attic insulation
Fresh insulation laid over open gaps keeps fighting a draft, so we seal first and insulate second, which lets the new material actually slow the heat the way it should.
Older houses and rentals
Older houses tend to have more gaps around pipes, wires and the attic hatch, and property managers call us about rentals where tenants mention drafts or high bills.
Get a written air sealing estimate
Send the form and we'll reply within one business day to set a time. I come out, look at the attic and the drafty rooms, and put the work in writing, free and with no obligation.
Which rooms feel drafty
Tell us which rooms run drafty, hot or cold, because that points me toward where the air is getting in before I even climb into the attic.
Where your attic access is
Let us know where the attic hatch or crawl space opening is, and whether anything is stored in front of it, so the visit goes smoothly and I can see everything.
Gas appliances and known problems
Mention a gas stove, furnace or fireplace, along with any roof leak or old wiring you know about, since those shape the plan before anything gets sealed.
Examples of insulation and air sealing work
These photos show the kinds of materials and attic layouts we can talk through, from foam around pipes to loose fill over sealed gaps.
Common questions about sealing air leaks
These are the questions South Pasadena homeowners usually ask once they start chasing drafts and wondering what's worth calling a crew for.
Can I seal air leaks in my house myself?
Yes, the obvious ones are fair game, like gaps around door frames and the places where pipes, vents and wires pass through outside walls. The small leaks in the attic are another matter, because they're hard to spot and often sit under layers of insulation, so that part of the house is better left to a professional.
How do professionals find hidden air leaks in a house?
Energy assessors use a blower door test, a strong fan set in an outside doorway that pulls air in through every gap, and a thermal camera that shows where it enters. That finds the leaks a homeowner's search misses. When hiring an assessor, you can ask about the Building Performance Institute Building Analyst or Residential Energy Services Network rater certification.
What should an air sealing estimate cover in my attic?
Ask which of the common attic leak points it covers, such as the tops of walls, recessed lights, plumbing vent pipes, exhaust fans, chimneys and flues, and duct openings into the attic. Those are where air slips between your rooms and the attic. Our written estimate names the spots we plan to seal, so you can compare it with another bid.
Is air sealing safe in a home with a gas furnace or fireplace?
Yes, when the plan starts with a ventilation check. A tighter house still has to bring in enough fresh air to keep the indoor air healthy, and a gas stove, oven, furnace or fireplace needs enough air to vent properly. If your house will need more fresh air once it's sealed, I'll tell you at the estimate rather than after the work.
What hours can construction crews work in South Pasadena?
In most of South Pasadena, crews can work 8:00 a.m. to 7:00 p.m. Monday through Friday, 9:00 a.m. to 7:00 p.m. on Saturday, and 10:00 a.m. to 6:00 p.m. on Sundays and holidays the city recognizes. Southwest Monterey Hills has different rules. We plan your job inside whichever hours apply to your address.
Insulation work that goes with air sealing
Book a look at your attic leaks
Call (626) 597-0202 any day of the week until 11 PM, or use the form, and I'll come see where your house is losing air.