Insulation contractor in Windsor, CA - attics sealed and topped up right
Evergreen Petaluma Spray Foam Insulation is an insulation contractor based in Petaluma, CA, and working in Windsor. We seal attic gaps, top up thin insulation, pull out damaged material and insulate crawl spaces and walls.
- Licensed and fully insured.
- Free quotes on site.
- Expect a reply within 1 business day.
Insulation work in Windsor homes
Windsor sits just north of Santa Rosa. Most of the houses we crawl through there are newer subdivision homes, the kind with a hatch in the hallway ceiling and an attic nobody's looked at since the builder blew in the first layer, with older ranch houses, a few farmhouses and some shops and small offices mixed in.
We cover Windsor the same way we cover Larkspur down south, and here the job usually turns on what's already in the attic. The price moves with how much old material comes out, how many gaps need sealing and how hard the space is to get into, and the schedule turns on whether removal has to come first, so I look at all of it before I write your estimate. In the newer houses that usually means sealing and topping up, and in the older ones it often means clearing out what's there before anything new goes in.
What we do on Windsor houses
Attic air sealing
Builder-grade attics here usually leak around can lights, pipes and the hatch. We seal those gaps first, so the new insulation isn't fighting a draft.
Blown-in insulation
Original attic insulation in Windsor subdivisions has often settled thin, especially out at the edges. We blow in loose fill evenly to the eaves, keeping the vents clear.
Insulation removal
Older ranch houses and farmhouses here sometimes have attic insulation that's damp or full of droppings. We pull it out and clean up before anything new goes in.
Closed-cell foam insulation
The room over the garage in many Windsor homes has cold floors. Closed-cell foam, a dense foam that blocks moisture, seals and insulates that floor at once.
Crawl space insulation
Raised-floor houses here often have missing or sagging insulation under the floor, which you feel through your socks. We refit it and support it so it stays put.
Wall insulation
Some older Windsor houses have little or nothing in the exterior walls, so rooms stay drafty. We fill those walls through small holes instead of tearing them open.
What Windsor houses usually need
In the newer subdivision homes, the attic insulation is usually still the builder's original layer, and after years of settling it's often deep in the middle and thin out at the eaves, which is backward. A lot of these houses also have their ductwork running through the attic, and that's when I'll point you toward foam, because it seals the air and insulates in one go. Otherwise, sealing the gaps around the lights, pipes and hatch and then topping up with blown-in insulation, loose fill blown through a hose, does the job for less money.
The older houses are where my dad's rule matters most, which is to do things in the right order. I measure how many inches are up there and check what shape they're in, because new material over damp or dropping-filled insulation just hides the problem, so that comes out first and we keep the eave vents clear so the attic can breathe. And if your attic's in decent shape, I'll tell you it can wait.
Your free Windsor insulation estimate, done on site
Send the form or call (707) 238-6044, and we'll reply within one business day to set a time. Then I come out to your Windsor house, look at the attic and crawl space, and write you a free estimate with no obligation. Your satisfaction, guaranteed.
Questions we hear in Windsor
Here are the questions Windsor homeowners ask us most about permits, inspections and price. If yours isn't here, call or send the form and ask about your own house.
Who issues building permits for insulation work in Windsor, CA?
The Town of Windsor Building Division issues building permits in Windsor and checks work through plan review, permits and inspections. We find out what the city wants for each job, handle the permit when one is needed, and ask the building office before we start if we're not sure. We're licensed and fully insured.
When is a building inspection needed in Windsor?
As a rule of thumb, the city wants an inspection whenever something is about to be covered up or made hard to reach, and the number and type depend on the project's scope. The permit holder requests inspections, which run Monday through Thursday, 8:30 a.m. to 4:30 p.m., so when we hold the permit we book them before anything gets closed in. If you're unsure whether your job needs one, you can check with the Building Division through the city's inspections page.
What hours can insulation contractors work in Windsor, CA?
The Building Division posts construction hours of Monday to Friday, 7 a.m. to 7 p.m., and Saturday, 8 a.m. to 7 p.m. Sunday work needs express permission from the Building Official, so we plan Windsor jobs inside those weekday and Saturday hours.
How do I apply for a building permit in Windsor?
Windsor takes building permit submittals electronically, and you can email buildingpermits@townofwindsor.ca.gov for details. The permit counter is open Monday to Thursday, 8 a.m. to 11 a.m., or by appointment. When your insulation job needs a permit and we're doing the work, we take care of the application.
How much does insulation cost for a house in Windsor, CA?
Your price comes down to how much old insulation has to come out, how many gaps need sealing first and how much attic, wall or crawl space we're covering. Foam costs more than loose fill, and a tight attic or low crawl space takes longer, so a newer Windsor house with a clean attic usually comes in lower than an older place that needs a full clear-out. I come out, measure what's up there and write the estimate, so you get a number for your own house.
How long does an insulation job take, and when can my family go back inside?
With attic sealing and blown-in work you can usually stay home, and how long we're up there depends mostly on whether old material has to come out first. Spray foam comes with a re-entry time, the stretch before you, the kids and the pets can come back in, and we give you those hours ahead of the job so you can plan around them.
Examples of insulation work
Other cities we work in
We work in many cities around Petaluma, not just this one. Look for yours here, or get in touch about your job wherever you are.