Air sealing services in Santa Rosa CA - fewer drafts and a house that holds its heat
Cold drafts, a hot upstairs or a power bill that keeps climbing usually trace back to air leaks. We find them and seal them.
What does air sealing fix in a drafty house?
Air sealing services in Santa Rosa find the gaps where outside air slips into your house and close them, so rooms stop feeling drafty, your heating and cooling don't strain as hard, and your power bill isn't paying for air that leaks straight out. Leaks can also carry moisture in that warps wood and leads to mold, so sealing them protects the framing too.
Most calls we get start with cold floors, a drafty room over the garage or a power bill that looks too high for the size of the house. At D&R Santa Rosa Spray Foam Insulation we're based in Santa Rosa and travel to many of the cities around it, and on a sealing job the price mostly turns on how many gaps your house has, how easy the attic and crawl space are to get into and whether old, damaged insulation needs insulation removal first. The schedule hangs on those same things, plus a permit and inspection when the job needs one, and the estimate visit is where you get the figure for your house.
How our air sealing service works
I'd rather know where your house leaks than guess, so we start every job by finding the leaks, usually at the attic floor, the crawl space and anywhere pipes, wires or ducts pass through. Before we seal anything, I check how your furnace, stove or fireplace gets its air, because closing up a house changes the air those have to draw on. Then our crew closes the gaps around can lights, plumbing and wiring holes and the attic hatch with caulk or foam, and we keep the eave vents open so the attic can still breathe. We clean up as we go and show you what we sealed.
Sealing is often the first half of a bigger job. If you have a basement, sealing the rim joist, the band of framing that sits on the foundation wall, fits naturally with basement insulation. Foam costs more because it seals air while it insulates, and in most attics I'd rather seal the gaps and top up the loose fill, but if your ductwork runs through the attic, closed-cell foam insulation, a dense foam that also blocks moisture, is usually worth the extra.
Why Santa Rosa homeowners call us to seal their houses
I look at every job myself
I come out to look at your house before we quote, and when the work happens I'm on site running our install crew. The person who looked at your attic is the one making sure it gets sealed the way we talked about.
The right licenses for insulation
We're licensed and insured. A job that adds insulation falls under what California's contractor licensing board calls insulation work, and contractors working inside Santa Rosa city limits also need an active city business license, so both are fair things to ask any crew you're comparing.
Permits applied for and inspected
When a job needs a permit, we apply for it, set up the inspections and give you a copy of the paperwork for your records. The city checks permit work against the state and local energy code and inspects it, so you end up with a record of what was approved.
City crew habits since 2023
I started this business in 2023 after years on a municipal crew, sealing and insulating city buildings. That work taught me to do things in order, write down what we find and get each job past an inspector, and we run houses the same way.
On this job the order of the steps matters most, so leaks get found and your appliances' air gets checked before anything is sealed. Request your estimate or call (707) 508-4085, and mention any fuel-burning furnace, stove or fireplace so I know to look at it.
Get a free on-site estimate for air sealing
We reply to calls and messages within one business day, and the estimate is free, done at your house and comes with no obligation. Once you send the form, we'll set a time for me to come out, look at where your house leaks and answer any questions you have before you decide anything.
Air sealing work up close
Questions before you book air sealing
How do I find out where my house is leaking air?
The surest way is a home energy audit, where a certified auditor uses a blower door test and an infrared camera to show where outside air gets in. A blower door is a strong fan set in an outside doorway that pulls air out of the house so the leaks show themselves, and the camera picks up the cold or warm streaks around them. Knowing the leak spots first means the sealing goes where it's needed, which is why our visit starts with finding them.
Do I need a safety check before sealing a house with a gas furnace or fireplace?
Yes, that check comes first. Federal guidance calls it essential to work out how much fresh air a home needs before it's sealed, because stoves, ovens, fuel-burning furnaces and fireplaces need proper venting. It's a normal step on a careful job, and I'll ask about yours on the estimate visit.
How do I know if air sealing actually worked?
A blower door test run before and after the work measures how leaky the whole house is, so it can confirm the change. If other parts of the house were sealed at the same time, that number covers all of it and not just the attic, so read it as a whole-house result.
How much does air sealing cost in Santa Rosa?
There's no set price, because the cost of air sealing comes down to how many gaps your house has and how hard they are to reach. A low, cramped attic, a lot of can lights or plumbing runs, old insulation that has to be pulled back or removed, and whether new insulation goes in afterward all move the number. I'll give you a figure for your house after the free estimate visit.
Who can pull a building permit for insulation work in Santa Rosa?
In Santa Rosa, only properly licensed contractors or owner-builders can get a building permit. The city requires a permit to build, alter or repair a building unless the California Building Code expressly exempts the work, so ask the city's building permit office whether your job is covered. When a permit is needed, we handle the application and inspections, as I mentioned above.
Should I seal attic air leaks before adding insulation?
Yes, seal first. When you're insulating an existing vented attic, federal guidance says to air seal every opening through the attic floor before the insulation goes in, using sealant, spray foam or rigid blocking as each one needs. Doing it in that order means the new insulation isn't fighting a draft, and it's far easier than digging insulation back out later to find a leak.
Work that often goes with air sealing
- Basement insulation
If your floors run cold over a basement, insulating its walls and rim framing pairs with sealing to keep that chill from working its way up into the rooms above.
- Closed-cell foam insulation
Foam that sets hard and blocks moisture makes sense where ducts share the attic or a wall stays damp, since it seals and insulates in a single application.