Insulation Contractor in Petaluma - Warmer Rooms in Older, Drafty Houses
Evergreen Petaluma Spray Foam Insulation is an insulation contractor in Petaluma, CA. We seal the gaps and insulate attics, walls and crawl spaces in Petaluma houses, so the upstairs stops baking and the floors stop feeling cold.
- Licensed and fully insured.
- Free quotes on site.
- Expect a reply within 1 business day.
Insulating Petaluma houses, old and new
I grew up handing tools to my dad in Petaluma attics and crawl spaces, and in 2017 I started this business on what he taught me. Most of our calls come from older, drafty houses near downtown and on the west side, the kind with raised floors and an attic nobody has visited since the last owner's Christmas boxes went up there. The newer neighborhoods east of the freeway have their own complaints, usually a hot room over the garage or an upstairs that won't cool down. We work up the road in Santa Rosa and down in Novato too, and the houses there give us much the same puzzles.
In houses that age, the job is less about piling on insulation than doing things in the right order, so we check what's up there, clear out anything soaked or dirty and seal the gaps before new material goes in. What's already in the attic, whether it has to come out and how easy the attic and crawl space are to get into move both the price and how long we're at your house, and I'll walk you through all of it on the estimate.
What we do for Petaluma houses
Spray foam insulation
Over garages and where ductwork runs through the attic, spray foam insulation seals and insulates at once. We use it where it earns its higher cost.
Attic insulation
Lots of older Petaluma attics still have a few thin, settled inches. We keep the eave vents clear and blow in new fill evenly out to the edges.
Insulation removal
In older Petaluma attics, insulation that's soaked or full of droppings just gets buried under a top-up. We remove it and clean up before anything new goes in.
Crawl space insulation
Cold floors in Petaluma's raised-floor houses usually trace back to a bare crawl space underneath. We insulate up between the floor joists so the rooms above stay warmer.
Wall insulation
Many older Petaluma houses went up with empty walls, which is why the outside rooms feel chilly. We fill closed walls through small holes and patch them afterward.
Attic air sealing
Can lights, pipes and the hatch in older Petaluma ceilings leak house air into the attic. We seal those gaps first, so the insulation isn't fighting a draft.
What Petaluma houses usually need
Petaluma gets cool, foggy mornings and plenty of warm afternoons, so an attic here bakes through the day, the rooms under it hold that heat into the evening and the floors are cold again by breakfast. That swing is why people tell me the upstairs is hot and the downstairs is drafty in the same breath, and it's usually the attic and the crawl space working against each other. We look at both ends of the house before we suggest anything, because fixing one and ignoring the other rarely settles it.
The question I hear most is whether to go with foam. Foam costs more and seals air while it insulates, which pays off when the ductwork lives in the attic or a bedroom sits over the garage. For most older houses here, sealing the gaps and topping up the loose fill usually does the job, and I'd rather tell you that than sell you foam your house doesn't need.
Get a free on-site insulation estimate for your Petaluma house
Call or send the form and we'll reply within one business day to set up a visit. I come out to your Petaluma house myself, look over the attic and crawl space with you and write up 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.
Petaluma insulation questions
These are the questions Petaluma homeowners ask us most, from permits to price. If yours isn't here, give us a call and ask about your own house.
How much does attic insulation cost in Petaluma?
There's no set price, because the cost turns on what's already in your attic, whether old material has to come out first and which material suits your house. Sealing the gaps and topping up loose fill usually costs less than spray foam, while a cramped crawl space, a small hatch or a lot of removal adds work. If the job needs a city permit, its fee is either flat or based on what the project costs to complete, and I'll give you your own number when I come out.
Do I need a permit to insulate my attic in Petaluma?
The City of Petaluma's permit examples don't name insulation by itself, so we check what the city wants for each job before we start. Its list does include renovations, additions and certain electrical or plumbing changes, and its permit rules fold in state building codes and energy conservation requirements, so insulation that goes along with that kind of work may need one. When a permit is needed we handle it, and if we're not sure, we ask the city's building office first.
How long does it take to get a building permit in Petaluma?
Most permits from the city take a few weeks, and some take several months, though a few are issued over the counter or within a few days. In most cases the city wants plans that its staff review and approve first, and that review is where the time goes. If your job needs a permit, I'll tell you when I write the estimate so the schedule allows for it.
How do I apply for a building permit in Petaluma?
You apply online through the city's Permits & Planning Hub, and the city's building permit page walks you through it. Building and code questions go to building@cityofpetaluma.org, or you can call City Hall at (707) 778-4345, keeping in mind it's closed Fridays. When we handle the permit for your insulation job, we take care of the application ourselves.
Does an insulation contractor need a Petaluma business license?
Yes, the city's instructions have contractors based outside Petaluma fill out the business license application and pay, and businesses in town apply too, with a zoning clearance from Planning for their location. The application asks a contractor for their contractor's license number, listed as a CSLB number, and its expiration date, so it's fair to ask anyone you're thinking of hiring for theirs. We're based in Petaluma, licensed and fully insured.
What causes a hot upstairs and cold floors in an older Petaluma house?
Usually it's air leaking through gaps in the ceiling and floor, plus insulation that's thin, settled or missing in the attic and under the floor. In older houses here, warm air slips up through can lights, pipe holes and the attic hatch, and cold air comes up from an open crawl space to take its place. We seal those gaps first and then add insulation evenly, so the new material isn't fighting a draft.
Insulation work, up close
Other cities we work in
If you're outside Petaluma, look for your city here or just get in touch, because we work in more places than any list shows.