Insulation Contractor in Sonoma, CA - Fewer Drafts in Older Homes
Evergreen Petaluma Spray Foam Insulation insulates and seals the drafty gaps in attics, walls and crawl spaces in Sonoma, CA. Our Petaluma crew comes over for hot upstairs rooms, cold floors and power bills that keep climbing.
- Licensed and fully insured.
- Free quotes on site.
- Expect a reply within 1 business day.
Insulating Sonoma's older houses
Sonoma is a short drive over the hill from us, and as an insulation contractor based in Petaluma, CA, I'd call it one of my favorite places to crawl around, because the houses here have some history in the walls. Close to the Plaza we get into older homes that have been added onto over the years, and farther out we see newer houses that were built tighter from the start. We do the same work over in Napa and down in Corte Madera, but Sonoma attics have a way of keeping me on my toes.
That mix shapes the job more than anything else. An addition built years after the main house usually has its own attic with different insulation, different gaps and sometimes no way through from one side to the other, so I look at every part before I write the estimate.
Insulation work we do in Sonoma
Air sealing services
Older Sonoma houses leak air at can lights, pipes and the attic hatch. Our air sealing services close those gaps first, so new insulation isn't fighting a draft.
Attic insulation
Hot upstairs bedrooms here usually mean a thin, tired layer in the attic. We top it up with loose fill blown in through a hose.
Insulation removal
Older attic fill here that's been soaked or full of droppings has to come out, or the problem stays. We vacuum it out before anything new goes in.
Crawl space insulation
Cold floors in the raised houses here usually trace to a bare crawl space. We insulate under the floor so the kitchen stops feeling like a walk-in cooler.
Wall insulation
Plenty of older Sonoma houses have nothing in the walls. We blow insulation in through small holes and patch them, so the rooms stop leaking heat.
Commercial insulation
Property managers call us about Sonoma offices and shops where tenants complain of hot and cold rooms. We find the leaks first, then insulate.
What older Sonoma houses usually need
Most Sonoma attics I climb into already have a few inches of old insulation, and it's rarely spread right, piled deep in the middle where it was easy to reach and thin at the edges, which is backward. Earlier top-ups often buried the eave vents too, so the attic stops breathing and moisture starts showing in the framing. We build the edges back up and keep the vents open with baffles that hold the insulation back from them, because a house that can't breathe will make you pay for it later.
Price and schedule turn on the same few things: what's already up there and whether it has to come out, how easy the attic or crawl space is to reach, how much of it there is, and whether we use foam or loose fill. A permit can change the timing too, so I check with the City of Sonoma Building Division whenever we're not sure what the city wants. Your own number comes with the estimate.
A free on-site insulation estimate for your Sonoma house
Send the form or call (707) 238-6044, and we'll reply within one business day to set a time. I come out to your Sonoma house myself, look at the attic or crawl space and write a free estimate, with no obligation. If you go ahead, our crew lead and installers do the work, and I check it with you at the end.
Sonoma insulation questions
These are the questions Sonoma homeowners ask me about permits, licenses, cost and how long we'll be in the attic. If yours isn't here, call or send the form.
Do I need a permit to insulate my attic in Sonoma, CA?
It may, because the city's building official issues permits for most construction and repair work in Sonoma, and the city's permit handout lists electrical, plumbing, mechanical, grading and demolition work without naming insulation either way. Even work the city exempts still has to meet state and city code. We find out what the city wants for your job and handle the permit when one is needed, and if we're not sure, I ask the Building Division before we start.
When does an insulation contractor need a California state license?
A contractor needs a license from California's Contractors State License Board when the job needs a building permit, brings in any extra workers, or totals $1,000 or more in labor and materials. A bigger job can't be broken into smaller pieces under $1,000 to get around that rule. We're licensed and fully insured.
Do contractors working in Sonoma need a city business license?
Yes, the city requires every business working inside Sonoma city limits to file a business license each year. That includes subcontractors, independent contractors and one-person outfits, so it's a fair question to ask anyone you're thinking of hiring.
How much does it cost to insulate an older house in Sonoma, CA?
It comes down to how much has to happen before the new insulation goes in and which material you pick, so I give you your own number at the estimate instead of a guess over the phone. Spray foam costs more and seals air while it insulates, but sealing the gaps and topping up loose fill is usually the better buy, unless your ductwork runs through the attic. Old fill that has to come out first adds to the job, and I'll tell you straight if yours can stay.
How long does attic insulation take in Sonoma, and do we have to leave the house?
With loose fill you can usually stay home while we work, and how long we're up there depends mostly on how much old material comes out first and how easy the attic is to get into. Spray foam is different, because everyone, kids and pets included, stays out until the re-entry time tells you it's safe to come back inside. I'll go over both at the estimate so you can plan around it.
What is the best way to insulate an older house in Sonoma?
Do it in the right order: clear out anything soaked or dirty, seal the gaps, then add insulation evenly with the vents kept clear. That's how my dad taught me, and it's the order that makes new insulation actually pay off. Plenty of older houses only need the attic done for now, and I'd rather tell you the walls can wait than sell you work your house doesn't need.
Insulation work, up close
Other cities we work in
Choose a city from the list for more about our work there, or call (707) 238-6044 if you don't see yours.