Dedicated Insulation Contractor in Windsor CA - Even comfort in every room of your house

H&M Windsor Spray Foam Insulation puts in attic insulation and spray foam across Windsor and nearby cities like Santa Rosa and Healdsburg. We also insulate crawl spaces under cold floors and seal attics over hot upstairs rooms.

(707) 687-4455 Request an estimate

Wall studs filled with textured cream spray foam insulation above a bare concrete floor.

Ask for a free insulation estimate at your house

We reply within one business day to set up a time, and I come out to look at the house with you before you get a written estimate. It's free and obligation-free.

Licensed and insured.
Free quotes on site.
We reply within 1 business day.

Insulation work we do in Windsor, CA

H&M Windsor Spray Foam Insulation is an insulation contractor in Windsor, CA, and we offer 16 services, from topping up an attic to sealing off a damp crawl space. Most of them fix the same few complaints, like a drafty house, a hot upstairs, cold floors or a power bill that keeps climbing. The price turns on how big the space is, whether old insulation has to come out first and whether you choose foam or loose fill. The schedule turns on that removal and on anything I find that has to be fixed before new material goes in, like old wiring or a roof leak. Your free on-site estimate puts your own figure in writing.

Spray foam insulation
We spray foam into rafters, walls and floor framing, where it expands, fills the cavity and seals air while it insulates, for spots loose fill can't reach.
Attic insulation
Hot upstairs or a high power bill? We check how many inches are in your attic now, seal the gaps, then bring the depth up evenly, edges included.
Blown-in insulation
Blown-in insulation is loose fill we blow through a hose, and it's usually the simplest way to top up an attic that already has some.
Home insulation
Not sure where the drafts are coming from? We look at the attic, walls and crawl space together, then fix them in the order that pays off.
Insulation removal
Soaked or droppings-filled insulation has to come out, because new material over it keeps the problem. We vacuum it out so the attic starts clean.
Crawl space insulation
Cold floors usually start in the crawl space, so we insulate between the floor joists under your house and hold it tight to the floor above.
Wall insulation
We insulate open walls during a remodel and finished walls in lived-in rooms, where we blow fill through small holes and patch them afterward.
Air sealing services
Air sealing means closing the gaps around pipes, wires and outlets before insulating, because insulation can't stop air that's moving straight past it.
Basement insulation
For houses with a basement, we insulate the walls and the band of framing on top of the foundation, where cold air tends to slip in.
Closed-cell foam insulation
Closed-cell foam is dense foam that also blocks moisture, so we use it where damp is part of the problem, like crawl space walls and rim framing.
Open-cell foam insulation
Open-cell foam is the softer, lighter foam, and we spray it under the roof and into walls where you want air sealed but moisture isn't the worry.
Commercial insulation
We insulate shops, offices and small commercial buildings too, and we plan the work around your hours so the space can stay open while the crew is there.
Crawl space vapor barrier
A crawl space vapor barrier is heavy plastic laid over the dirt to keep ground moisture from rising into your floor framing and insulation.
Vapor barrier installation
Does your house need a vapor barrier? Some walls and ceilings do and some don't, and we'll tell you which before we put one in.
Attic air sealing
From the attic side, we seal the hatch, the plumbing holes and the light openings in your ceiling, so the insulation on top isn't fighting a draft.
Retrofit insulation
Retrofit insulation goes into a house that's already built and lived in, through the attic, crawl space and small wall holes, without tearing out finished walls.

Why homeowners have us look before we insulate

Most calls start with cold floors, a hot room or an attic nobody's looked in. A job done in the wrong order wastes money, so I'd rather explain first than rush.

See your own attic first
I take photos of what's in your attic, walls or crawl space and walk you through them, pointing out where air gets in and where moisture collects. You decide what the house needs with the evidence in front of you.
Even depth, edges included
Coverage often ends up deep in the middle of an attic and thin at the eaves, which is backward. Our crew fills the edges and keeps the eave vents clear, so the attic can still breathe once the new insulation is in.
Honest about what's not worth it
If your attic already has plenty and the real trouble is a handful of open gaps, I'll say so. A smaller job you need beats inches that won't change how the house feels. Call (707) 687-4455 and ask.

How an insulation job works with us

Here's what happens from your first call to the final cleanup, so you know who you'll talk to and who'll be in your attic at each step.

Step 01
Call or send a request
Call (707) 687-4455 or use our contact form and tell us a little about what's bothering you, like cold floors, a hot bedroom or an attic you've never looked in. We reply within one business day to set up a free on-site estimate, and there's no obligation.
Step 02
I look at the house with you
I come out myself, and we go through the attic, crawl space or walls together. I'll ask how each room feels, explain what I find and point out anything that has to be fixed first, like old wiring, a roof leak or damp ground. Then you get a written estimate.
Step 03
Our crew does the work
When you're ready, our install crew comes out with a lead installer on site who knows the plan. We seal the gaps before any insulation goes in, because insulation laid over open gaps ends up fighting a draft. If your job needs a permit, that side is handled too.
Step 04
Cleanup and a look at the finished job
When the work's done, we clean up and show you what changed, from the sealed openings to the depth along the edges. If your job had a permit, the final inspection is part of wrapping up, and we'll walk you through anything you want to see again.

Who we are and how we work

Small on purpose
We've kept the business small on purpose, so the plan I explain at your house is the plan our crew follows. Nothing gets lost between the person who looked at your attic and the people working in it.
Taught by the makers' guides
I learned insulation from manufacturer guides and building science books, then from working attics and crawl spaces around Windsor, so we put each product in the way its maker means it to go.
Careful inside your house
Insulation work means hoses and people coming through your home, so we cover the floors along the path, keep the mess in the work area and clean up before we leave.

Why I run it this way

H&M Windsor Spray Foam Insulation is an insulation contractor in Windsor, CA, and we've been at it since 2017. We're licensed and insured, and we offer 16 services across Windsor and the cities around it. I care most that people understand their own house, because a job done in the wrong order wastes money. You can read more about how we got started on our about page.

Insulation questions Windsor homeowners ask

How much does insulation cost in Windsor, CA?

It depends on your house, so I give you a written figure after a free on-site estimate rather than a guess over the phone. The biggest factors are how many inches are already up there, how easy the space is to get into and how old the house is, since age tells me a lot about what I'll find.

Is spray foam worth the extra cost over blown-in insulation?

Usually not for a regular attic floor, where sealing the gaps and topping up blown-in insulation gets you most of the way for less. Foam earns its cost when your ductwork runs through the attic, because sealing the roofline brings those ducts inside the insulated part of the house.

How long does attic insulation take, and do we have to leave the house?

That depends on the size of the attic and whether old insulation has to come out first, and I'll tell you the timing at your estimate. With blown-in insulation you can usually stay home. With spray foam, you, the kids and the pets stay out until the re-entry time, the point when it's safe to come back in, and we'll tell you when that is.

Are you a licensed and insured insulation contractor in Windsor?

Yes, H&M Windsor Spray Foam Insulation is licensed and insured. If you'd like to see proof of insurance before the crew starts, ask at the estimate and we'll get it to you.

What should I do to get ready for an insulation estimate?

Not much, just make sure I can get to the attic hatch and the crawl space opening. It also helps to think about which rooms feel too hot, too cold or drafty, so we can trace where the air is moving.

Do you guarantee your insulation work?

Yes, our work is satisfaction guaranteed. Tell me what you expect from the job at the estimate, so we both know what finished looks like before any work starts.

Should I put new insulation on top of the old insulation in my attic?

Usually yes, if the old insulation is dry and clean, because there's no reason to pay to haul out material that still works. If it's been soaked or is full of droppings, it comes out first, or the new layer just inherits the problem.

Do I need a permit for insulation work in Windsor, CA?

That depends on the job, and I'll go over it with you at the estimate. When a permit is needed, it comes from the Town of Windsor Building Division, and we take care of the application and set up the inspections. If you want to check something yourself, you can contact the Building Division.

Cities we serve around Windsor

H&M Windsor Spray Foam Insulation is based in Windsor, California, and we insulate homes in Santa Rosa, Healdsburg and the other cities around it. The 11 cities below each have their own page, and we work in others nearby too.