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Serving Pasadena, CA and surrounding areas. (213) 953-8008
Your AC works hard all summer but conditioned air keeps escaping through ceiling gaps. We seal every penetration in your attic floor so that cool air stays where you paid for it to be.
Attic air sealing in Pasadena means finding every gap, crack, and opening in your attic floor - the ceiling of your living space - and closing them so conditioned air stays inside. Most jobs take four to eight hours, and you never need to leave your home while the work is done.
Many Pasadena homeowners add insulation hoping to solve high energy bills, but insulation cannot stop air moving through gaps. Air sealing closes those pathways first. When both are done together, the results are dramatically better than either alone. If your home already has insulation but your bills are still high, unsealed gaps are likely the missing piece. Pair attic air sealing with air sealing services throughout the rest of the home for the most complete solution.
This is especially relevant in Pasadena, where summer temperatures in the San Gabriel Valley regularly push into the 90s and beyond, and where a large share of homes were built before the energy codes that required proper sealing even existed.
If rooms directly under your attic stay noticeably warmer than the rest of the house even when the AC runs hard, hot attic air is pressing through gaps in your ceiling. This is common in Pasadena craftsman and ranch homes built before modern energy codes. The problem tends to worsen every summer.
If your cooling costs seem disproportionately high compared to neighbors in similar homes, a leaky attic is one of the first places to look. Southern California Edison customers can use the utility's online comparison tools to check usage against similar nearby homes - a significant gap is a signal worth investigating.
During Pasadena's fall Santa Ana wind events, a leaky attic pulls dry, dusty outdoor air through your ceiling and into your living space. If you find yourself dusting more than seems reasonable, or if your home smells different when the winds pick up, air is moving through gaps it should not be using.
If you peek into your attic and insulation looks thin, compressed, or uneven - or if you can see the tops of the ceiling joists - your attic almost certainly has not been professionally air sealed. Homes that have never had insulation upgraded typically have not had air sealing done either.
Our standard approach covers every penetration in the attic floor - pipe openings, wire holes, recessed light cans, tops of interior walls, and any other gaps where conditioned air escapes. We use rigid foam board for larger openings and fire-rated caulk or spray foam for smaller cracks. Before we leave, we verify coverage and walk you through exactly what was done. For homeowners whose attic also has thin or degraded insulation, we recommend pairing this work with retrofit insulation in the same visit to get the full benefit of both.
For homeowners who want to understand their home's performance before committing to work, we offer a diagnostic blower door assessment. This test measures how much air your home currently leaks and tells us exactly where the biggest losses are - so the sealing work that follows is targeted, not guesswork. Many California utility rebate programs also require before-and-after testing, so starting with a diagnostic can simplify the paperwork. The U.S. Department of Energy provides guidance on air sealing best practices that informs our process.
Suits homes built before 1980 with multiple unsealed penetrations, recessed lights, and unsealed wall tops.
Best for homeowners who want to address both gaps and thermal resistance in a single visit at combined cost.
Ideal for homeowners who want a measured baseline before committing to any sealing work.
Pasadena sits in the San Gabriel Valley, where summer temperatures regularly reach the high 90s and the surrounding mountains trap heat and limit cooling breezes. When attic air leaks are present, that extreme heat presses down through your ceiling all afternoon, and your air conditioner runs almost constantly trying to catch up. Homeowners here often feel the impact as stubbornly high electricity bills every July and August - and sealing those leaks is one of the most direct ways to bring those costs down. Residents in Arcadia, CA and Glendale, CA face the same valley heat and benefit from identical attic sealing work.
Pasadena also has a significant share of homes built before 1960 - craftsman bungalows, Spanish colonial revivals, and mid-century ranches constructed long before any energy codes required sealing attic penetrations. These homes often have dozens of unsealed gaps above the ceiling joists that have never been touched. On top of that, Pasadena and the broader San Gabriel Valley experience seasonal Santa Ana wind events that push dry, dusty outdoor air through every gap in a home's envelope. Homeowners who notice more dust inside or who smell smoke during fire season often find that attic air sealing makes a meaningful difference in indoor air quality.
When you call or submit a request, we will ask a few questions about your home's age and the problems you have been noticing. We reply within one business day and schedule an in-person assessment - no price is given over the phone without seeing the space.
We access your attic and inspect every penetration - pipes, wires, recessed lights, and wall tops. Many assessments include a blower door test, which gives you a measured baseline of your home's current air leakage before any work begins.
You receive an itemized written estimate covering scope, materials, and total cost. We identify any Pasadena Water and Power, Southern California Edison, or SoCalGas rebates that apply so you know your net cost before you decide.
The crew enters your attic, moves or lifts existing insulation, and seals every gap with foam and caulk. The work typically takes four to eight hours. Your living spaces are not disturbed - most homeowners go about their normal day while we work.
Free estimate, no obligation. We reply within one business day.
(213) 953-8008We measure your home's air leakage before work starts and again when it is done. You get a number - not a promise - showing exactly how much your home improved. That documentation also supports rebate applications with Pasadena Water and Power and SCE.
Pasadena's craftsman bungalows, Spanish revivals, and mid-century ranches have more unsealed penetrations than newer construction. We know where the gaps hide in pre-1960 homes and bring the right materials for each type of opening - rigid foam for larger gaps, fire-rated caulk for smaller cracks.
We are familiar with current Pasadena Water and Power, Southern California Edison, and SoCalGas rebate programs. We handle the documentation before and after the job so you do not lose money because of a missed form or filing deadline.
BPI is the leading national certification body for home energy professionals. Working to BPI standards means we address every penetration systematically rather than spot-treating obvious gaps and calling it done. See standards at bpi.org.
Every attic air sealing job we do is backed by measurable results and documented for rebate applications. If you want to know whether the work was worth it, the blower door numbers give you the answer in plain terms.
For permit questions, see the City of Pasadena Building and Safety Division.
Add new insulation to an existing home without major demolition, often paired with attic air sealing for maximum impact.
Learn MoreWhole-home air sealing that addresses gaps in walls, floors, and other areas beyond the attic.
Learn MoreSummer heat fills the calendar fast - lock in your appointment now before the hottest months arrive and our schedule fills up.