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Serving Petaluma, CA and surrounding areas. (707) 778-6192
If your Petaluma home runs the heat all morning and still feels drafty, air leaking out of your attic is likely the cause. We find and seal every gap so your insulation can finally do its job.
Attic air sealing in Petaluma finds and closes the hidden gaps in your attic floor - around light fixtures, pipes, and wall tops - that let conditioned air escape and outside air push in. Most standard single-family homes are completed in a single day.
Insulation slows heat from moving through your ceiling, but it cannot stop air from flowing through gaps. Those gaps - hidden above your drywall, around every light fixture and plumbing pipe that passes through the attic floor - are the reason rooms feel drafty, energy bills climb, and smoke from Sonoma County wildfires finds its way inside. Attic air sealing closes those pathways first, so your insulation can actually do the job you are paying for. For older Petaluma homes, this is often the highest-impact upgrade available.
Most attic air sealing projects are paired with insulation work for the best result. If you are replacing old insulation at the same time, see our air sealing services page for whole-home gap sealing, or check crawl space vapor barrier if moisture from below the home is also a concern.
If your utility bill climbs sharply from October through February but you have not changed your thermostat habits, air leaking out of your attic is one of the most common causes. Petaluma winters are mild compared to most of the country, but the cool, damp air from the Petaluma Gap puts a steady load on your heating system when warm air is escaping through the ceiling. Bills that feel out of proportion to how cold it actually gets here are a reliable signal.
If one bedroom is always colder than the rest of the house in winter, or upstairs rooms feel stuffy and hard to cool in summer, that unevenness usually points to air moving through the attic in ways it should not. This is especially common in Petaluma's older homes, where the attic floor was never properly sealed at the time of construction. The problem is not your HVAC system - it is that conditioned air is escaping before it can do its job.
When air leaks through your attic, it pulls dust, insulation particles, and outdoor allergens down into your living space. If you find yourself dusting more often than seems reasonable, or family members with allergies notice worse symptoms at home, attic air leaks may be contributing. During Sonoma County wildfire season, a leaky attic can allow smoke particles inside - if you noticed smoke smell indoors during a recent fire event, that is a strong signal to act.
Homes built in Petaluma before modern energy codes were adopted were not designed to be airtight. If you own a Victorian, Craftsman, or mid-century home in Petaluma's older neighborhoods, there is a very good chance your attic has never been properly sealed. You do not need to wait for a dramatic symptom - the age of the home alone makes an assessment worthwhile, especially before adding or replacing insulation.
We start every attic air sealing job with a blower door test - a calibrated fan temporarily mounted in your front door that measures exactly how leaky your home is. That number gives us a baseline and gives you a way to verify the improvement after the work is done. Then the crew accesses your attic, carefully moves any existing insulation aside, and seals each gap with foam or caulk - recessed light fixtures, plumbing and wiring penetrations, wall top-plates, and attic hatches. Once every gap is sealed, we replace insulation to its original depth and re-run the blower door test so you can see the difference in numbers. We also review any PG&E rebates or federal tax credits you may qualify for at the time of the estimate, not as an afterthought afterward. For homeowners who want a complete thermal upgrade, air sealing services covers the whole building envelope beyond the attic alone.
California homeowners served by PG&E may qualify for rebates on qualifying attic air sealing work. The ENERGY STAR Seal and Insulate program and the federal Inflation Reduction Act energy efficiency credit can both apply to qualifying projects, potentially offsetting several hundred dollars of your cost. Contractors certified by the Building Performance Institute are trained specifically to assess and improve home energy performance using the blower door testing that PG&E requires for rebate qualification. We handle that documentation so you do not have to figure it out yourself.
Before-and-after air leakage measurement so you can see the improvement in numbers - not just take our word for it.
Every gap around light fixtures, pipes, wiring, wall tops, and chimneys is sealed with foam or caulk before insulation is replaced.
The attic hatch is one of the biggest single air leaks in most homes - we seal the frame and add weatherstripping so it holds a tight seal every time it is closed.
For homeowners replacing old insulation at the same time - we seal first, then install new insulation on top, so both services are done in the right order in a single visit.
Petaluma sits in a natural coastal gap where cool Pacific air is funneled through the hills on most afternoons and evenings - locals call it the Petaluma Gap. That persistent wind and humidity means outside air is constantly being pushed against your home and into any crack it can find. A large share of Petaluma homes were built before 1980, and most of them were never designed to be airtight. The Victorians and Craftsman bungalows near the historic downtown, the mid-century ranch homes in the central neighborhoods, and the early tract homes on the west side all share the same characteristic: attic floors full of gaps that were never sealed. Homeowners in Santa Rosa and Novato face the same marine-influenced conditions and see comparable improvements after attic air sealing.
Sonoma County wildfire smoke events have added a second reason Petaluma homeowners are prioritizing attic air sealing. During the 2017 and 2019 fires, many residents experienced smoke smell inside closed homes - and the attic is the primary entry point. A properly sealed attic significantly reduces how fast smoke can infiltrate during a nearby fire, which is a meaningful health benefit for families with children, elderly members, or anyone with respiratory conditions. PG&E, which serves all of Petaluma, also offers rebates for qualifying attic air sealing work that can reduce your out-of-pocket cost - ask your contractor about the current program requirements when you request your estimate.
We respond to all inquiries within one business day. We will ask a few quick questions about your home - age, whether you have had any insulation work done, and what is prompting you to call - so we can come prepared and give you an accurate estimate.
A trained technician visits, runs the blower door test to measure your home's air leakage, and checks the attic for gap locations and any moisture or structural issues. You get a written estimate before they leave. This visit typically takes about an hour.
We walk you through what we found, what needs to be sealed, and which PG&E rebates or tax credits may apply to your project. No pressure. Ask any questions at this stage - a good contractor gives you straight answers, not a sales pitch.
The crew seals every gap, replaces insulation to its original depth, and runs the blower door test again so you can see the improvement in actual numbers. You receive written documentation of the work - useful for rebate applications and any future home sale.
Free blower door test and written estimate. We handle PG&E rebate paperwork. No obligation.
(707) 778-6192We run a calibrated air leakage test before we start and again after we finish on every project. That means you get a number that shows exactly how much improvement was made - not just a contractor's promise that the work was done well. That documentation also satisfies PG&E's rebate requirements.
We work in all 12 communities in our service territory, from Petaluma and Santa Rosa to Novato and Napa. That familiarity means we already know the City of Petaluma Building Division's permit process, which homes in which neighborhoods tend to have the most gaps, and what PG&E's current rebate program requires.
Victorian and Craftsman homes have attic characteristics that newer construction does not - hand-cut framing, irregular penetrations, and settled insulation that shifts around as you work. We have sealed attics in Petaluma's historic neighborhoods enough to know where to look first and how to work carefully without damaging original materials.
PG&E's rebate qualification requires specific documentation - pre and post air leakage measurements, contractor enrollment, and a written project summary. We are familiar with these requirements and handle the paperwork on your behalf so the rebate check actually arrives instead of getting lost in the process.
Petaluma has specific conditions - the Petaluma Gap wind, the wildfire smoke risk, the large stock of pre-1980 homes - that shape how attic air sealing gets done here. We work in this market every week, and that local experience shows up in the quality of the estimate, the care taken during installation, and the results you see on your utility bill.
Address moisture rising from below while the attic above is being sealed - a complete approach for older Petaluma homes with both problems.
Learn moreWhole-home gap sealing beyond the attic - walls, crawl spaces, and every other pathway where outside air finds its way in.
Learn morePG&E rebate availability changes each program cycle - book your assessment now so you do not miss the current offer.