Insulation Contractor in Rohnert Park - Even Comfort, Upstairs and Down
Evergreen Petaluma Spray Foam Insulation is an insulation contractor working in Rohnert Park, CA. We seal drafts, clear out spoiled old insulation and add new in attics, walls and crawl spaces so your house holds its temperature.
- Licensed and fully insured.
- Free quotes on site.
- Expect a reply within 1 business day.
Rohnert Park attics, walls and crawl spaces
Rohnert Park sits just up 101 from us in Petaluma, between Cotati and Santa Rosa, so it's an easy morning drive for our crew. The city is mostly neighborhoods of single-family houses with apartments and rentals mixed in, so I hear from homeowners with a drafty house and from property managers with a building to sort out.
What moves the price on a job here is how much area we cover, whether old insulation has to come out first and how many gaps need sealing, and the schedule turns on attic access and whether removal comes before anything new goes in. I spell all of that out in the estimate after I've seen your house. A lot of streets here went up in batches, so the houses on a block often share an attic layout and the same tired insulation, which gives me a head start, though I still climb up and look at yours.
What we do in Rohnert Park houses
Attic insulation
Many Rohnert Park attics still hold a few thin, settled inches from when the house went up. We measure what's there and top it up evenly, edges included.
Attic air sealing
Drafty rooms here usually trace back to gaps around can lights, pipes and the attic hatch. We seal those first so new insulation isn't fighting a draft.
Insulation removal
Some Rohnert Park attics hold insulation that's flattened, damp or full of rodent droppings. We pull it out and clean up before anything new goes down.
Home insulation
Plenty of houses here have cold floors and a hot upstairs. Our home insulation work treats the house as one job, sealing gaps first.
Crawl space vapor barrier
Crawl spaces under raised-floor houses here can stay damp and musty. We lay a plastic vapor barrier over the dirt to keep that moisture out of the floor.
Closed-cell foam insulation
The room over the garage is often the worst one in the house. We spray dense closed-cell foam there to seal and insulate in one go.
What houses here need from insulation
The ground under Rohnert Park is highly expansive soil, the kind that swells when it's wet and shrinks as it dries, and that movement can crack foundations and slabs. That's true of the city as a whole, not a verdict on your lot, but it's why I look hard at a crawl space before we put a vapor barrier down. If a downspout is dumping water at the foundation, I'll tell you to sort that out first, because gutters, downspouts and splash blocks are what keep rainwater away from the house, and no sheet of plastic can do their job.
Up top, the attics we open here tend to tell on themselves: insulation that's settled thin, gaps around can lights and the hatch that nobody sealed, and eave vents buried so the attic can't breathe. For most of these houses we do air sealing, closing those gaps, then top up with blown-in insulation, loose fill blown through a hose, spread evenly out to the edges with the vents kept clear. Foam costs more and seals while it insulates, so I steer you toward it when your ductwork runs through the attic and away from it when it doesn't.
Get a free on-site estimate for your Rohnert Park 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 Rohnert Park house, look at the attic and crawl space with you 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.
Rohnert Park insulation questions
These are the questions Rohnert Park homeowners ask me most often. If yours isn't here, call or send the form and I'll talk it through for your house.
Do I need a permit to insulate my attic in Rohnert Park?
It can need one, so we check with the city before we start. The city's Building Division issues permits for work that alters, repairs or improves a building, and it lists some work that's exempt. We handle the permit when one is needed, and if we're not sure, I ask the city's building office first.
Does an insulation contractor in Rohnert Park need a license?
Yes, a state license and a city business certificate. The state licensing board requires a current license from anyone who contracts for work that needs a building permit, uses employees or takes on a job worth $1,000 or more in labor and materials combined, and the city wants a Business Tax Certificate from anyone doing business inside city limits, including companies whose crews come in from out of town. We're licensed and fully insured.
How much can a contractor ask for up front on an insulation job in California?
No more than $1,000 or 10 percent of the contract price, whichever is less, under the state licensing board's rule for home improvement work. It's worth knowing before you sign with anyone, us included.
How much does attic insulation cost in Rohnert Park?
It comes down to the size of your attic, how many inches are already up there and whether the old stuff has to come out before anything new goes in. Air sealing, a tight hatch to work through and foam instead of loose fill push it up, while a clean attic that only needs topping up keeps it down. I give you the number in writing after I've been up there.
How long does attic insulation take, and when can my family go back inside?
With blown-in loose fill you usually don't have to leave at all, and how long we're in the attic depends on its size, the access and whether removal comes first. With spray foam, you, the kids and the pets stay out until the re-entry time, the wait the foam maker sets before people come back, has passed. I'll tell you which applies to your job when I write the estimate.
What is the best way to insulate an older house in Rohnert Park?
Do it in order, sealing air gaps and dealing with damp or dirty old insulation before adding anything new, because insulation over a draft or a wet mess doesn't pay off. My dad drilled that order into me when I was the kid holding his flashlight, and it's still how we work. Sometimes the honest answer is that part of the house can wait, and I'll tell you when that's the case.
Insulation work, up close
Other cities we work in
Check the list for another city you're curious about, or just call (707) 238-6044, since these pages don't cover every place we go.