Spray foam insulation
Spray foam fits rooflines and the room over the garage, sealing air and insulating in one pass. It costs more, so I'll tell you plainly when it's worth it.
Insulation contractor in San Rafael, CA - attics sealed first, then insulated
T&S Rohnert Park Spray Foam Insulation is an insulation contractor based in Rohnert Park that works in San Rafael, sealing air leaks first and then insulating attics, crawl spaces and walls in the order that lasts.
T&S Rohnert Park Spray Foam Insulation comes down to San Rafael for attic insulation, crawl space work, air sealing, spray foam and insulation removal. Most calls here start with a drafty room, a hot upstairs or a power bill that keeps climbing, and the fix usually starts with sealing gaps before any new insulation goes in.
Insulating San Rafael houses from attic to crawl space
The San Rafael houses we get into tend to have the same handful of complaints: a bedroom upstairs that runs hot while the rest of the house is fine, a room over the garage nobody wants to sit in, or cold floors over a crawl space that was never insulated. Each one points to a different spot, so I look at the attic, the walls and the crawl space before I suggest anything.
That habit came from the lead installer I started under, who taught me to look at the whole house before selling anybody anything. We work in the same order here that we do in Sonoma or back home in Rohnert Park, sealing the air leaks first and then adding insulation, because insulation laid over open gaps ends up fighting a draft it can't stop.
- Based in
- Rohnert Park, CA 94928
- Hours
- Mon–Fri: 6 AM–10 PM, Sat–Sun: 8 AM–10 PM
Insulation services for San Rafael houses
Attic insulation
When the attic has only a few inches of old insulation left, we seal the gaps and bring the depth up evenly, including the thin edges near the eaves.
Blown-in insulation
Blown-in insulation, loose fill blown through a hose, reaches the low corners of an attic that rolls and batts can't, so coverage stays even out to the edges.
Home insulation
If the whole house feels drafty or the temperature swings from room to room, I walk the attic, walls and crawl space and lay out what to fix first.
Insulation removal
Insulation that's been soaked or filled with rodent droppings has to come out before new material goes in, or the smell and the problem stay put.
Crawl space insulation
Cold floors usually trace back to a bare crawl space, so we insulate between the floor joists and seal the openings that let cold air under the house.
Wall insulation
Older walls are sometimes empty or half-filled, and we can usually add insulation without tearing out the drywall, which helps rooms that never seem to hold heat.
Air sealing services
Air sealing, closing the gaps before insulating, goes after the leaks around pipes, wires, can lights and the hatch that make a house feel drafty.
Basement insulation
When a house has a basement or a lower floor partly below ground, we insulate those bare walls so the space stops feeling chilly and gets usable.
Closed-cell foam insulation
Closed-cell foam, dense foam that blocks moisture, suits crawl spaces and spots near damp ground where other insulation would soak up water and sag.
Open-cell foam insulation
Open-cell foam is lighter and softer, and it suits an attic roofline when your ducts run up there and should sit inside the insulated part of the house.
Commercial insulation
Offices and small commercial buildings get the same order of work, sealing first and insulating second, scheduled around your hours so the business keeps running.
Crawl space vapor barrier
A vapor barrier over the crawl space dirt keeps ground moisture from rising into the floor framing, and we lay it before or alongside the crawl space insulation.
Vapor barrier installation
Beyond crawl spaces, we put vapor barriers wherever the house calls for one, so moisture stays out of new insulation instead of collecting in it.
Attic air sealing
Before new insulation goes down, we seal the attic's holes around can lights, plumbing pipes, wiring and the hatch, the step nobody sees and the one that pays off.
Retrofit insulation
Retrofit insulation means adding to a finished house, topping up what's already there or filling walls and floors that were skipped when it was built.
Get a free on-site insulation estimate in San Rafael
Send the form and we'll reply within one business day to set a time that works for you. I come out to your San Rafael house myself, look over the attic and crawl space, and give you a free estimate with no obligation.
(707) 576-6028Permits, business licenses and pricing for San Rafael jobs
Building permits in San Rafael come from the city's Building Safety Division, which covers work that alters or repairs a building. If it's not clear whether your insulation job needs one, we check with that office before work starts. When a permit is needed, we apply for it, keep you posted and set up the inspections, and waiting on those dates can push the schedule out a bit.
Before you hire anyone, there's one thing you can check yourself. San Rafael requires a business license to work inside city limits, even for a company based outside them like ours, and you can confirm a contractor's with the city's business license office. The city treats that license as a tax, not proof of skill, so ask about experience and how they'd do the work too.
What moves the price is mostly what I find up there: how big the attic is, how easy it is to get into, how old the house is, how many inches of old insulation are left, whether any of it has to come out and how many gaps need sealing. The schedule turns on the same things plus any permit. You get your own number at the free estimate, the same way we work in Novato and Corte Madera.
How we run an insulation job from estimate to cleanup
I come out for every estimate myself, so the person looking in your attic is someone who started as a helper hauling bags and crawling through attics. I opened the business in Rohnert Park in 2021, and our crew does the work with me on site or one of our lead installers running the day. We're licensed and insured, and our promise is satisfaction guaranteed.
I'll also tell you when something isn't worth the money. Spray foam costs more because it seals air while it insulates, but for most attics, sealing the gaps and topping up loose fill does the job for less, unless your ductwork runs through the attic. Call (707) 576-6028 or send the form, and I'll walk you through what your house actually needs.
What we find in San Rafael attics and crawl spaces
Most insulation problems we get called about in San Rafael come from a few things that are easy to miss from the hallway. Here's what I look for and how we handle each one.
Old insulation that has to go
If the insulation up there got soaked by an old roof leak or filled with rodent droppings, putting fresh material on top just buries the problem. We pull out what's ruined, clean up and then insulate, so you're not paying to cover something that keeps smelling or holding moisture. If the old layer is dry and clean, it can usually stay, and we build on it.
Gaps around lights, pipes and the hatch
Warm air finds every opening around can lights, plumbing pipes, wiring and the attic hatch. Insulation slows heat, but air still moves right through it, so a draft keeps cutting across no matter how deep the layer is. That's why we seal those gaps first, the part of the job you'll never see once the insulation covers it.
Eave vents and thin edges
A common mistake is piling insulation deep in the middle of the attic and leaving it thin along the edges, or burying the eave vents that let the attic breathe. Buried vents trap moisture, and it shows up later in the framing. We keep those vents open with baffles, simple guards that hold insulation back, and make sure the edges get full coverage.
The room over the garage
The room over the garage usually feels worse than the rest of the house because the garage below isn't heated and the floor between them often has little or no insulation. We check that floor, the walls around the room and the gaps where the garage ceiling meets the house, then seal and insulate the weak spots so the room keeps up with the others.
San Rafael insulation questions homeowners ask us
Where do I apply for a building permit in San Rafael?
New permit applications in San Rafael go through the city's OpenGov system, and inspections for every permit, old or new, get scheduled there as well. When your insulation job needs a permit, we take care of the application and the inspection bookings, so you don't have to learn the portal yourself.
How long is a building permit good for in San Rafael?
A San Rafael building permit stays valid for two years, while minor permits, like the ones for a water heater or furnace, last only 180 days, according to the city's permit page. A permit that hasn't passed its final inspection by then needs a renewal fee, so we book the final as soon as the work allows.
How much does attic insulation cost in San Rafael?
I can't give you an honest number until I've seen your attic, and the free estimate is where you get it. The biggest swings come from removal and material, because pulling out soaked or rodent-fouled insulation adds labor and disposal, and spray foam costs more than sealing gaps and blowing in loose fill. A small, easy-to-reach attic with clean insulation already up there costs the least.
How long will the insulation crew be at my house, and do we have to leave?
It mostly comes down to attic size and whether old insulation has to come out first, and I'll lay out the schedule for your house at the estimate. With blown-in insulation you can usually stay home. With spray foam, everyone, kids and pets included, stays out while we spray and until the foam maker's re-entry time, the point when it's safe to come back inside, has passed.
How do I get my house ready for insulation work?
Clear a path to the attic hatch or crawl space door and move anything stored right around them, since that's where the crew and hoses come through. If you keep boxes up in the attic, plan to pull them down, and keep pets in a closed room on work day. We lay down covers and clean up before we leave.
Tell us about your San Rafael house
We pick up the phone until 10 PM every day of the week, weekends included, so call (707) 576-6028 or send the form whenever the drafty room is on your mind.