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Serving Rohnert Park, CA and surrounding areas. (707) 210-9475
Gaps in your attic let conditioned air escape all day, every day. We find and seal every opening so your home holds temperature and your heating and cooling system stops working harder than it needs to.
Attic air sealing in Rohnert Park means a contractor finds and plugs every gap, crack, and hole where your attic connects to your living space - around light fixtures, plumbing pipes, wall tops, and the attic hatch - and most jobs in a typical single-family home are completed in two to six hours.
If your home feels drafty in some rooms and stuffy in others, or if your PG&E bill seems high for your home's size, air moving through attic gaps is one of the most common culprits. Rohnert Park's wide temperature swings between morning and afternoon - cool starts in the 50s, afternoon heat in the 80s and 90s - drive air constantly in and out of every opening in your building envelope. Sealing those gaps is the step that makes insulation work properly. A home with thick insulation but unsealed gaps is still losing a significant amount of the energy you are paying for. For a complete approach, many homeowners combine attic air sealing with our retrofit insulation service to address both air movement and heat transfer at the same time.
The U.S. Department of Energy estimates that sealing air leaks and adding insulation together can cut heating and cooling costs meaningfully for a typical home. In a climate like Rohnert Park's, where your heating and cooling system runs most months of the year, those savings add up year after year.
If you are paying noticeably more to heat or cool your home than neighbors with comparable square footage, air leakage is one of the most common causes. In Rohnert Park's older neighborhoods - where many homes were built in the 1960s and 1970s - the gap between a sealed and an unsealed attic can translate to a meaningful difference on your monthly PG&E bill. This is especially noticeable in spring and fall when temperature swings between morning and afternoon are widest.
If one room is always too warm and another is always too cold, or if you feel a draft near the ceiling when the wind picks up outside, air is moving through your home in ways it should not. These comfort problems are often caused by air leaking through the attic floor - warm air escaping in winter, hot attic air pushing down in summer. The fix is not a bigger heating or cooling system. It is closing the gaps that are letting air move in the first place.
If you can smell wildfire smoke inside your home during Sonoma County's fire season even with windows closed, your home has significant air leaks - and the attic is one of the most common entry points. Smoke particles are small enough to travel through gaps you would never notice otherwise. A sealed attic will not make your home completely airtight, but it significantly reduces how much smoky outdoor air finds its way inside.
If you peek into your attic and the insulation looks flat, gray, and sparse - or if you can see the wooden joists poking through - the attic has likely never been properly air sealed either. Older Rohnert Park homes often have insulation that was installed decades ago without any sealing underneath it, which means air moves freely through the gaps even if there is some insulation sitting on top. Thin or old insulation is a reliable signal that the whole attic system needs attention.
We work systematically across the attic floor, applying foam or caulk to every gap we find - around light fixtures, plumbing pipes, electrical wiring, wall top plates, and the attic hatch itself. The hatch is one of the most commonly skipped spots, so we seal it every time. Before we start, we explain what we are looking for and what we expect to find based on your home's age and layout. After the work is complete, we walk you through what was done and provide documentation you can use for any PG&E rebate application. Many homeowners pair attic air sealing with our air sealing services for a whole-home approach, or combine it with our retrofit insulation work so the sealing and insulation are done together in a single visit.
We use materials rated for attic environments - two-part spray foam for larger gaps and acoustical sealant for smaller penetrations. We do not use standard caulk on gaps that see temperature swings, because it can crack over time. You should expect a written estimate, a clear timeline, and a contractor who answers questions directly before any work begins. We carry liability coverage and advise you honestly if a permit applies to your specific project.
Best for homeowners focused on stopping air movement first - sealing gaps before adding any new insulation so the insulation can do its job properly.
Best for homes where both the sealing and the insulation need to be addressed - doing both in one visit is more efficient and typically more cost-effective.
Best for homeowners preparing to sell - a sealed, documented attic is a verifiable improvement that can support your listing and satisfy home inspection concerns.
Best for homeowners who want to apply for PG&E rebates - we provide the project documentation the utility requires so you are not left managing paperwork alone.
Rohnert Park was developed rapidly as a planned community starting in the late 1950s, and a large share of its single-family homes were built between the early 1960s and mid-1970s. Those homes were constructed before energy efficiency was a priority, and most have never had their attic air sealing updated. Building codes at the time had minimal requirements for sealing the boundary between living space and attic - which means the gaps that were left open when your home was framed are still open today. If your home is from that era, attic air sealing is not a speculative upgrade. It is addressing something that was simply never done. Homeowners in Cotati and Petaluma face the same issues, as much of the housing stock across this part of Sonoma County dates from the same construction era.
Rohnert Park's climate adds urgency to the work. Sonoma County's inland corridor runs hot in summer - afternoons regularly reach the 80s and 90s - and cool and damp in winter, with temperature drops into the 30s on cold nights. That combination means your heating and cooling system is working almost every month of the year, not just in peak summer or winter. Wildfire smoke is an additional concern. During fire season, smoky outdoor air enters homes through exactly the same gaps that let conditioned air escape. The California Air Resources Board documents the health risks from smoke infiltration, and a tighter home is a measurably safer place to be during those events.
When you reach out, we ask a few basic questions - your home's age, whether you have noticed comfort or energy bill issues, and if any prior insulation work has been done. We respond within one business day and schedule your assessment from there.
We come to your home and access the attic to evaluate what is there - existing insulation, gap locations, and the condition of penetrations around plumbing and electrical. We can run a diagnostic fan test to measure how leaky your home actually is. You receive a clear explanation of what we found and a written estimate before anything is scheduled.
Clear a path to your attic hatch and move any items stored directly under it. You can stay home during the job. The crew works entirely in the attic - your living space is not disturbed. Most projects take two to six hours, with no strong odor or mess in your rooms.
After sealing is complete, we walk you through what was done and provide project documentation you can use for a PG&E rebate application. If we noticed anything else worth your attention - like old insulation that should be replaced or a bathroom fan that vents into the attic - we flag it at this point.
Free estimate, no obligation. We respond within one business day and explain exactly what we find before any work is scheduled.
(707) 210-9475We use a before-and-after diagnostic fan test that shows you in real numbers how much the air leakage in your home improved. You walk away with proof the job worked - not just a contractor's assurance. That is the difference between a thorough job and a fast one.
We document the work in the format PG&E requires so your rebate application goes smoothly. Many homeowners leave rebate money on the table because the paperwork feels complicated. We handle that part so you do not have to figure it out after the project is done.
Most of our work is in homes built between 1960 and 1985 - the era that defines most of Rohnert Park's housing stock. We know what to expect in attics of that age: loose insulation over unsealed gaps, knob-and-tube concerns, and hatches that have never been addressed. We come prepared for what we are likely to find.
Any insulation contractor working in California is required to hold a current license from the California Contractors State License Board. Ours is current and verifiable. You can check any contractor's license on the CSLB website in under a minute - and you should, before hiring anyone. We encourage that check.
Attic air sealing is one of the highest-return improvements available to owners of older Rohnert Park homes - and it is a job where the quality of the work determines the quality of the result. We bring the right materials, the right measurements, and the paperwork to back it up.
Add blown-in or foam insulation to walls, attics, and crawl spaces in existing Rohnert Park homes without major renovation - the logical next step after sealing.
Learn MoreWhole-home air sealing that addresses gaps beyond the attic - including rim joists, basement walls, and other air pathways throughout the building envelope.
Learn MoreRebate deadlines and installation schedules fill up fast - call now to lock in your date and we'll handle the PG&E paperwork.