Spray foam insulation
Spray foam fits the hard spots, like a rim joist or the room over the garage, because it fills odd shapes and seals air in the same pass.
Insulation contractor in Sebastopol, CA - attics and crawl spaces done in the right order
T&S Rohnert Park Spray Foam Insulation is an insulation contractor based in Rohnert Park, and in Sebastopol we seal drafty gaps and insulate attics, crawl spaces and walls, doing the sealing first so the new insulation isn't fighting a draft.
T&S Rohnert Park Spray Foam Insulation insulates attics, crawl spaces and walls in Sebastopol, and we pull out old insulation when it's past saving. Most jobs start with air sealing, which is closing the small gaps around pipes, lights and the attic hatch, because insulation laid over an open gap just lets the draft keep coming through.
What insulation work looks like in Sebastopol homes
Most of the Sebastopol calls I get sound about the same. There's a back bedroom that never warms up, a room over the garage that's hot upstairs all summer, cold floors in winter, or an attic the owner has meant to deal with since they moved in. When I come out, I go up the hatch before I talk about any product, because the attic usually tells you what the house needs.
Up there I'm checking how many inches are already down, whether the old stuff is matted, damp or full of droppings, and whether the eave vents, the openings under the roof edge that let the attic breathe, are still open. Under the house I look at the crawl space and the ground cover. It's the same look we give every house, from Rohnert Park down to San Rafael, and it decides what we recommend.
- Based in
- Rohnert Park, CA 94928
- Hours
- Mon–Fri: 6 AM–10 PM, Sat–Sun: 8 AM–10 PM
Insulation services we offer in Sebastopol
Attic insulation
If the upstairs runs hot or the power bill climbs every season, the attic is usually where we start, sealing the gaps and then bringing the depth up evenly.
Blown-in insulation
Blown-in insulation is loose fill we blow through a hose, and it's the easy way to top up an open attic where the old layer is thin but clean.
Home insulation
When several rooms feel off at once, we look at the whole house, the attic, walls and crawl space, and tell you which part is worth fixing first.
Insulation removal
If what's up there got soaked, flattened or full of droppings, we vacuum it out and clean up first, because new insulation over a mess keeps the problem.
Crawl space insulation
Cold floors usually trace back to the crawl space, so we fit insulation snugly between the floor joists and keep it from sagging away from the floor above.
Wall insulation
Older walls are often empty or thin, so we can fill them through small holes from outside or inside and patch them, which helps a drafty room hold heat.
Air sealing services
Drafts sneak in around pipes, wires, outlets and doors, so we track the leaks down and close them, which often fixes a drafty room more than extra insulation would.
Basement insulation
Where a house has a basement or a partial one, we insulate the walls and the rim area so the room above stops pulling cold up through the floor.
Closed-cell foam insulation
Closed-cell foam is dense foam that also blocks moisture, so we use it where damp is a concern, like rim joists and walls below ground level.
Open-cell foam insulation
Open-cell foam is softer and lighter, and it suits rooflines and interior walls where you want air sealing and quieter rooms without paying for closed-cell.
Commercial insulation
We also insulate offices, shops and small commercial buildings, planning the work around your hours so the space keeps running while we're in the ceiling or walls.
Crawl space vapor barrier
Bare dirt under the house gives off moisture, so we lay a heavy plastic sheet over the ground and seal its seams to keep that damp out of the framing.
Vapor barrier installation
A vapor barrier keeps moisture from moving into walls, floors or ceilings where it can soak the insulation, and we put it on the side your house actually needs.
Attic air sealing
Before anything gets blown in, we seal the attic floor around can lights, plumbing pipes, wiring holes and the hatch, so the new layer isn't fighting a draft.
Retrofit insulation
For an older house whose insulation never got updated, we add to what's there or replace it, room by room if that's what makes sense for you.
Get a free on-site insulation estimate in Sebastopol
Send the form and we'll reply within one business day to set a time that works for you. I come out to your Sebastopol home myself, look at the attic and crawl space, and walk you through what I find. The estimate is free and there's no obligation to book anything.
(707) 576-6028Working in Sebastopol: permits, licenses and what moves the price
In Sebastopol, the City of Sebastopol Building Department issues permits for work on a building and its electrical, gas, mechanical and plumbing systems, and when a job needs one, the application and inspections add time to the schedule. We apply for it, keep you posted and set up the inspections with the city. If it isn't clear whether a permit is needed, we check with the Building Department before work starts.
You can check any contractor the same way. Look up their state license with the Contractors State License Board, and know that the city issues its own business license to contractors and subcontractors working here and has them certify their state license is current. We're licensed and insured, and we come over from Rohnert Park the same way we head up to Santa Rosa.
What moves the price is mostly what's already up there and how hard it is to reach. Old insulation that has to come out, a lot of gaps to seal, a tight crawl space or choosing foam over loose fill all add to it. The schedule turns on whether a permit is needed and whether removal comes first. Your own number comes from the estimate, once I've been in the attic.
Why the order of the work matters to us
I started out hauling bags and crawling through attics for a lead installer who made me look at the whole house before selling anybody anything, and I still work that way. I opened this business in Rohnert Park in 2021, and I come out for every estimate myself. Our crew does the work, with me on site or one of our lead installers running the day.
The part I care about most is the stuff you'll never see. We seal the gaps around lights, pipes and the hatch before anything covers them, keep the eave vents clear so the attic can breathe, and get the edges as deep as the middle, because thin edges are where a lot of jobs go wrong. If something isn't worth your money, I'll tell you.
I'll explain what's going on up there in plain words, so you understand your own house whether you hire us or not. We're licensed and insured, and our promise is satisfaction guaranteed. If you'd like me to take a look, call (707) 576-6028 or send a note through our contact form.
What we find under Sebastopol roofs and floors
These are the things that shape most of our work in Sebastopol, from what's sitting in the attic to a city rule that can change what a job costs before it even starts.
Old, thin attic insulation
A lot of the older houses we see still have whatever went in years ago, often a few inches that have packed down over time. I measure what's there before recommending anything, because clean, dry insulation can usually stay and get topped up. If it's soaked, stained or full of droppings, it comes out first, or the smell and the problem stay right under the new layer.
Cold floors over raised crawl spaces
Houses built up off the ground on a raised floor lose a lot of heat through the crawl space, and that's where cold floors come from. We check whether the old batts, the pre-cut blanket pieces, have dropped, whether the dirt is bare, and how much room there is to work, because a tight crawl space takes longer. The fix is usually insulation between the joists and a vapor barrier on the ground.
The room over the garage
That room is usually the hardest one in the house to keep comfortable, because it has open air below it and the roof right above. Gaps where the garage ceiling meets the house walls let air move straight through, so we seal those first. Foam often makes sense here, since it seals and insulates in one pass in spots loose fill can't reach.
Starting before the permit
If a job needs a permit and work starts without one, the city adds an investigation fee on top of the permit fee. That fee is at least as much as the permit fee and can run up to five times it, and the city collects it even if a permit is never issued. That's why we settle the permit question before anyone climbs into your attic.
Questions Sebastopol homeowners ask about insulation
Do I need a permit to insulate my attic in Sebastopol?
The city's exempt list doesn't answer that, because insulation isn't on it. The city's list of work exempt from permits names things like fences up to 7 feet, painting, tiling, carpeting and cabinets, and it's older than the code the city uses now. Exempt work still has to meet the code and local laws, so we get a clear answer before we start.
What hours can contractors make noise in Sebastopol?
The city limits noisy construction in or within 300 feet of a residential zone from 8 p.m. to 7 a.m. Monday through Thursday nights, and all day on designated holidays. Weekend limits run Friday 8 p.m. to Saturday 8 a.m., Saturday 4 p.m. to Sunday 8 a.m., and Sunday 4 p.m. to Monday 7 a.m. We plan loud work, like running the blower, inside the allowed hours.
How much of a down payment can a contractor ask for in California?
The state board says a contractor can't take a down payment of more than $1,000 or 10 percent of the contract price, whichever is less. Any other payments are listed in the contract and should match work completed or materials delivered, and the board says those rules apply to all home improvement projects.
How much does attic insulation cost in Sebastopol?
The price comes down to what's already in your attic and which material fits it, and you'll get your number from the estimate. Foam costs more and seals air while it insulates. For most attics, sealing the gaps and topping up with loose fill gives you more for the money, unless your ductwork runs through the attic, where foam usually earns its keep.
How long will the insulation crew be in my attic, and do we have to leave?
It mostly depends on whether old insulation has to come out first, and I'll lay out the plan for your house at the estimate. With loose fill, most families stay home while we work. Spray foam has a re-entry time, the wait before you, the kids and pets can come back inside, and we go over that wait with you well before the day.
How do I get my house ready for insulation work?
Clear a path to the attic hatch and move anything stored right around it or by the crawl space opening, so we can get hoses and lights in without shifting your things. Leave room in the driveway for our truck and keep pets in a closed room while doors are open. We cover the floor under the hatch and clean up when we're done.
Tell us which room never feels right
Call (707) 576-6028 any day until 10 PM or use our contact form, and if you tell us which room bothers you, I'll know where to start looking when I get there.