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Your attic is likely full of hidden gaps pushing triple-digit heat into your home. We find and seal every opening so your AC can finally keep up.
Attic air sealing in San Jacinto means finding and closing every gap, crack, and opening in your attic floor so hot air cannot pour into your living space and conditioned air cannot escape - most jobs are finished in a single visit of two to six hours with results you can feel the same day.
San Jacinto attics regularly hit 150 degrees in summer. Every unsealed gap around a light fixture, pipe, or wire is a channel for that extreme heat to flow directly into your home. Homes built here before 2000 were never required to meet today's air tightness standards, which means most have dozens of openings that have never been addressed. Attic air sealing in San Jacinto is one of the most direct ways to reduce how hard your air conditioner has to work all summer long.
Attic sealing works best when combined with proper insulation above the sealed floor. If your existing insulation is thin or settled, pairing the sealing work with retrofit insulation delivers a significantly better result than either task done on its own.
If your air conditioner runs for hours during a hot San Jacinto afternoon and the house still feels stuffy, hot attic air is likely flooding in through unsealed gaps faster than your system can remove it. This is not a sign you need a bigger unit - it is usually a sign the attic floor has never been sealed. The problem is most severe in homes built before the 1990s, which describes a large portion of the housing in this area.
If the upper portion of a room is noticeably warmer than floor level, heat is radiating down from an attic that is not properly separated from your living space. You can feel this difference by standing in the room on a hot day - no tools required. In San Jacinto homes from the 1970s through 1990s, this temperature gap is common and points directly to unsealed penetrations in the attic floor.
The San Jacinto Valley sees strong wind events, including Santa Ana winds in fall that carry dust and debris. If fine grit settles quickly on furniture and surfaces - especially near ceiling fixtures or vents - outdoor air is moving through your attic floor and into your home. Sealing those gaps stops the air pathway that is bringing the dust in.
If your Southern California Edison bill has crept up year over year and nothing obvious has changed, air leakage is one of the most likely causes. Every unsealed gap in your attic lets that extreme summer heat directly into your living space, forcing your AC to run longer and harder. The impact on your bill compounds over a full San Jacinto summer that stretches from May through October.
We work methodically across your attic floor, applying foam and caulk around every penetration we find - recessed lights, plumbing pipes, electrical wires, the tops of interior walls, and any other opening that connects the attic to the space below. We do not skip the small ones. A thorough job means closing all the gaps, not just the obvious ones. For homes that also need broader whole-home air sealing, we offer air sealing services that address gaps throughout the building envelope in a single project.
After sealing, we walk you through what was found and addressed, with photos from inside the attic so you can see the work. We provide the documentation you need for Southern California Edison rebates and the federal tax credit, which can cover up to 30% of qualifying project costs. The U.S. Department of Energy air sealing guidelines define the standard we follow on every job. For homes where insulation is also thin or degraded, we coordinate attic sealing with retrofit insulation in a single visit.
Best for homes where the attic is the primary heat source - addresses every penetration between the attic and the living space below.
Best for homes with older can lights in the ceiling, which are among the largest air leak sources in pre-2000 construction.
Best for older homes where the tops of interior walls were never sealed, allowing hot attic air to travel down into wall cavities.
Best for homes that need both - sealing stops air movement, then insulation slows the remaining heat transfer for maximum impact.
San Jacinto sits in a valley that traps heat during summer, and temperatures regularly exceed 105 degrees from June through September. At that level, the air difference between your attic and your living space is extreme - your attic may be at 140 to 150 degrees while you are trying to keep the rooms below at 75. Every unsealed gap in the attic floor is a direct path for that air to pour down into your home. Add the Santa Ana winds that push through the Inland Empire each fall, and you have a home that faces air infiltration problems for much of the year. Wildfire smoke - which affects the San Jacinto Valley most falls - also enters through the same unsealed openings, affecting indoor air quality for your whole household.
Most of the homes we work on were built in the 1970s through the 1990s, a period when air tightness requirements did not exist. Those homes have had 30 to 50 years of unsealed gaps that have never been addressed. We serve homeowners throughout the region, including Hemet and Menifee, where the same combination of older homes and intense valley heat makes attic sealing one of the most impactful single-day improvements a homeowner can make.
We ask a few questions about your home's age, attic access, and what prompted you to call. We reply within 1 business day and schedule a free on-site assessment - we never quote attic sealing over the phone without seeing the space.
A technician goes into your attic, identifies every unsealed penetration, and measures the scope. You receive a written estimate before any work begins - no pressure, no upsells, just a clear number for the job.
The crew sets up near the attic access, applies foam and caulk to every identified gap, and keeps the work area covered. Living areas stay largely undisturbed. Most jobs are done in two to six hours.
We walk you through what was sealed with photos from inside the attic, then provide the documentation you need for any SCE rebates or federal tax credits. You should feel the difference before the week is out.
Free estimate. No obligation. We reply within 1 business day and give you a written number before any work begins.
(951) 910-7091A proper attic sealing job addresses all the gaps - recessed lights, plumbing and electrical penetrations, top plates, and any other opening in the attic floor. We work methodically so nothing is left to chance. Partial sealing produces partial results, and we only do thorough work.
We provide photos from inside the attic showing the sealed areas, plus a written project summary. This documentation is useful for SCE rebates, the federal tax credit, and when you sell the home. You should never have to take a contractor's word alone that the work was done right.
Southern California Edison serves San Jacinto and offers rebates for qualifying air sealing and insulation work. We know which programs are currently active, and we handle the rebate documentation as part of the job - so you get the credit without chasing paperwork yourself.
Any contractor working in your home in California is required to hold a current state license. You can verify our license on the California Contractors State License Board website before you hire us. We follow California's construction and energy standards on every project, including all applicable permit requirements in the City of San Jacinto.
When you put those things together - thorough work, verified results, rebate knowledge, and proper licensing - you get the kind of project you can point to when your energy bill drops and when you go to sell the home. That is what we deliver on every attic air sealing job in San Jacinto.
Pair attic sealing with blown-in insulation added over the sealed floor to maximize both air and thermal performance in a single project.
Learn moreWhole-home air sealing addresses gaps beyond the attic - including crawl spaces, rim joists, and the full building envelope.
Learn moreSan Jacinto summers start early and stay brutal - book your attic air sealing now and feel the difference before your next SCE bill.