Dripping roof panels, cold offices or a climbing power bill? We seal and insulate your building so it stays dry and comfortable.
Commercial insulation in San Rafael covers a building's roof and exterior walls, plus the pipes, ducts and equipment inside, so the building holds its heat, uses less energy and keeps moisture off cold surfaces. At Comfort San Rafael Insulation Services, we plan it around your building and, when we can, around roof work you already have coming.
Most calls start with something you can see. Water drips from the underside of a metal roof, the office over the loading area never warms up, or the power bill keeps climbing. Insulation helps with all of that, but only if leaks, gaps and wet material get dealt with first, so I look for those before I talk about adding anything.
Price moves with the size of the roof and walls, how easy they are to reach, whether pipes and ducts are in the scope, and what has to be fixed or pulled out first. The schedule turns on whether a reroof is coming, whether the job needs a permit and when your tenants can spare the space. I put your own figure on paper after I've walked the building.
A commercial job usually touches three things. There's the shell of the building, the systems running through it, and the people who keep working inside while we're there.
The roof and outside walls are where heat moves in and out, and on a metal building the roof is where condensation usually shows up first. We check what's up there now, how it's held in place and whether it's wet or torn, because new insulation over damaged material just hides the problem.
Hot lines lose heat before it gets where it's needed, and cold lines sweat and drip onto ceilings and stock. Insulating them keeps the energy in the system, and lines that run outside get a weather-tight jacket or sealing coating so they don't sweat. We list every run in scope so nothing gets missed.
Your staff and tenants still have work to do while we're there. We usually work one area at a time, keep the dust contained, clean up at the end of each day and set the order of work around your busiest hours so the building keeps running.
Here's how a job goes from your first call to the walk-through at the end. I'm the one you deal with at the start, and I'm on site while the crew works.
Call (628) 234-2144 or use the form. It helps to have the building type, the roof type, any planned reroof date and which pipes or ducts you want looked at, so I can plan the visit.
I come out myself, get up on the roof or into the ceiling space and mechanical rooms, and look for leaks, wet insulation and anything else that has to be fixed first. Then I write up the estimate with the plan for your building.
If you go ahead, we handle any permit the job needs. Our crew preps the space, seals the gaps and installs the insulation and moisture layer, and I'm on site running the work.
Before we leave, I walk you and your maintenance staff through what we did, where the moisture layer runs and what to keep an eye on, so the work keeps doing its job after we're gone.
We write the plan for your building instead of pulling an old spec off the shelf. A spec borrowed from another job usually brings confusion, delays and extra cost, because it was written for a different roof and different goals. Ours says what we're installing, how thick, what finish goes on it and what it's meant to do, so you can hold any bid up against it.
Timing matters as much as material. If a reroof is already on the calendar, that's usually the moment to insulate, because the roof gets opened once instead of twice, so I'll ask about it when I come out. If water is already dripping or old insulation is falling down, I'd rather fix that now than wait for the roofers.
Moisture control goes into the plan from the start, not as an add-on, and we lay out the seams and pipe openings so your staff can find them and keep them sealed later. If your building sits over a crawl space, a crawl space vapor barrier handles ground moisture, and vapor barrier installation covers walls and ceilings that need their own moisture layer.
If a new roof is coming, plan the insulation into the same project. The roof is opened once, the work happens in one sequence, and you're not paying to tear into it a second time.
If condensation is already dripping or insulation is sagging, waiting for a reroof just lets the damage spread. We work from inside, fix what's wet and add the moisture layer and insulation that can go in without touching the roof.
Send the form and we'll reply within one business day to set up a visit. I come out, walk the roof, walls and mechanical spaces, and write up a free estimate for your building. There's no obligation to go ahead.
(628) 234-2144The City of San Rafael issues minor permits for reroofs and general permits for remodels and repairs, and its list names those jobs, not insulation on its own. That list doesn't settle whether your insulation work needs a permit, so the city's building division at (415) 485-3367 or building@cityofsanrafael.org is the place to ask. I'll find out before we start, and if a permit is needed, we pull it and set up the inspection.
The city takes new permit applications online through OpenGov, and that's where we file when your job needs one. Outside San Rafael, the permit comes from whichever city or county office covers your address, so for a building in Novato or Richmond we check with that office before any work starts.
I come out myself to look at your building and write the estimate. Our crew does the install, and I'm on site running it, so the person who wrote the plan is the one checking that it goes in that way.
I spent my first years in the trade insulating new houses, with everything open, and that's where I learned how insulation is supposed to go in. I started this business in 2023. We're licensed and insured. Our work is backed by our satisfaction guarantee.
If your building isn't ready for insulation yet, I'll tell you, along with what has to happen first. To set up a time for me to come look, call (628) 234-2144 or send us a message.
When your building sits over bare soil, a ground cover keeps damp air from rising into the floor and the space above it.
When a wall or ceiling needs a moisture layer of its own, separate from new insulation, this is the job that puts one in.
We're based in San Rafael and work in cities across Marin and nearby, from Petaluma down to Strawberry and over to Richmond and Berkeley. If your city isn't named here, call and ask.
Yes. Insulation industry guidance says fiberglass can go in as an added layer during a metal reroof, and on the built-up and single-ply roofs common on commercial buildings. Planning both in one project means the roof is opened only once. If you have a reroof date, tell me when I come out.
Install the insulation with a vapor retarder, a layer that blocks moisture, because together they keep condensation off interior surfaces when they're put in right. One trade association's design guide says the retarder should let very little moisture through, with sealed joints and seams, and should allow for resealing after maintenance. Ask each bidder to include it and explain how it goes in.
California's Contractors State License Board lists an insulation and acoustical contractor class, which covers installing any insulating material for temperature or sound control. Sound is part of the same trade because insulation in a metal building also blocks outside noise and soaks up echoes inside, which can make a busy building quieter for tenants and staff.
The city says the code in effect on the day a complete permit application goes in applies for the whole project. California's updated building code took effect at the start of 2026, so a job filed now falls under it. That's why the filing date, not the start date, sets the rules.
There's no fair number until I've seen the building, because two buildings the same size can need very different work. The biggest swings come from wet or damaged insulation that has to come out first, how hard the roof is to reach and how many pipes and ducts are in scope. You get your figure in writing after I walk it.
Clear stock, files and furniture from under the work area, and let tenants know which areas we'll be in and when. With fiberglass, people can usually keep working in other parts of the building. If the plan uses spray foam, that area has to stay empty until it's safe to go back in, and the estimate says how we'll schedule around that.
We answer the phone seven days a week, 8 AM to 9 PM, so call (628) 234-2144 or send us a message whenever it fits your schedule.
