Cold floors and a chill coming up from below? We deal with any water first, then seal and insulate so the rooms above feel warmer.
Crawl space insulation in Rohnert Park means air sealing and insulating either the floor above your crawl space or the crawl space walls, so the cold air under your house stops coming up through the floor.
A floor sitting over an unheated crawl space is one of the bigger places a house loses heat, and you feel it first in your feet. It's the kitchen floor that's cold in the morning, or the one bedroom that never warms up. Most of the calls I get about crawl spaces start right there, with cold floors and a power bill that seems high for what you're getting.
What moves the price is what's down there. That means any water or drainage trouble that has to be fixed first, old insulation that needs to come out, how tight the space is to crawl through, and whether we insulate the floor or close up the walls. The schedule turns on the same things, plus any permit. Your own price comes from the estimate, once I've been under the house.
Insulation under a floor only works if it stays put and stays dry. These are the details I look at on every crawl space, and the ones worth asking any installer about.
Batts, the precut blankets of insulation, should fit tight between the floor joists with no gaps, squashed spots or empty pockets, because cold air finds every one of them. Metal supports or wire can hold the batts against the underside of the floor so they don't sag over the years, so ask any installer how they'll keep them up.
Every crawl space, vented or closed up, needs a ground cover that keeps moisture in the ground from rising into the space. If yours has bare dirt or a torn old sheet, I'll show you at the estimate, and our crawl space vapor barrier work takes care of it.
Pipes and wires running up through the floor leave holes, and we seal those before any insulation goes in, since insulation laid over an open hole just fights a draft. Where floor insulation is open to the outside or to rodents, a rigid barrier usually goes over it as an extra layer of protection.
Here's how a crawl space job goes with us, from your first call to the walk-through at the end, so you know who you'll see and when.
You call (707) 576-6028 or use our contact form, and we get back to you to set up a time that works for you.
I come out myself, crawl under the house and take photos of the ground, framing, vents and anything running down there. Then I sit down with you to show what I found and what I'd do first.
If your job needs a permit, the city reviews applications in the order it gets them, so that can set the start date. On the day, our crew protects your floors and handles the prep and install, with me or a lead installer running it.
I walk through the finished work with you before we pack up, photos and all. After that, keep the access hatch closed, and call us if you ever see standing water or a torn ground cover down there.
Down in a crawl space, water comes before insulation. So the first thing I look for is damp ground, stains on the framing and drainage trouble around the house. Moisture problems have to be fixed before a crawl space is sealed and insulated, or the space won't stay dry once it's closed up. If your house needs a water fix, that's step one of the plan.
Once it's dry, we talk through the two ways to go, insulating the floor above or closing up the crawl space itself. Either way, we don't seal a single vent until we have a plan for any gas furnace or water heater down there, because that equipment needs its air. That plan comes before the insulation does.
Insulation does its best work over sealed gaps, which is why our air sealing services often go hand in hand with a crawl space job. Spray foam costs more and seals air while it insulates. For most floors, sealing the holes and fitting batts snug is the better spend, unless your ductwork runs through the crawl space. If rooms stay chilly along the outside walls after the floor is done, wall insulation may be the next piece.
The crawl space stays vented and outside the warm part of your house, and we seal and insulate the floor over it. This is usually simpler when gas equipment lives down there or the space is hard to close up.
The crawl space becomes part of the house, with its walls sealed and insulated, the ground covered and the vents closed on a plan. It's more work up front and only makes sense once water is handled.
We reply within one business day to set up a time, and I come out myself to look under the house. The estimate is free, done at your home, and there's no obligation, so you can take what I show you and decide on your own time.
(707) 576-6028Rohnert Park requires a permit from the city's Building Division for any alteration or repair of a building. Its permit list names jobs like reroofs, fireplaces, pools and carports, not crawl space insulation, so the list alone doesn't settle whether your job needs one. When it isn't clear, we check with the Building Division before work starts. When a permit is needed, we apply for it, keep you posted and set up the inspections.
We're based in Rohnert Park and work across the cities around it in Sonoma and Marin counties, including Cotati, Santa Rosa and plenty of others nearby. Most crawl space calls start with cold floors in a room or two, or an old vented crawl space nobody has looked at in years, and we work in the same order wherever the house sits.
I started out hauling bags and crawling through attics on a small crew, and the lead I worked under taught me to look at the whole house before selling anybody anything. I opened this business in Rohnert Park in 2021, and five years later I still come out for every estimate myself, so the person who looks under your house is the one who plans the job.
Our crew does the work, with me on site or one of our lead installers running the day. We're licensed and insured. And every job is satisfaction guaranteed. I care most about the steps you'll never see, like sealing the holes in the floor before the insulation covers them, because that's where the job really pays off.
If your floors are cold or you've been meaning to deal with that crawl space for years, call (707) 576-6028 and I'll come take a look.
If you feel drafts around outlets, doors or the attic hatch, closing those gaps keeps warm air inside and lets new insulation do its job.
Rooms that stay chilly along the outside walls, even after the floor is warm, often have thin or empty wall cavities worth filling.
We're based in Rohnert Park and do crawl space work across Sonoma and Marin counties. The cities below have their own pages, and we work in plenty of others nearby too.
Building guidance calls sealing and insulating the crawl space walls the best practice in every climate, though in dry climates the crawl space can stay outside the house's insulated shell. If it does, the floor and joists need thorough air sealing, with insulation in full contact with the underside of the floor. I'll tell you which fits your house once I've been down there.
No, closing up a vented crawl space takes more than sealing the vents. Sealing them alone can raise the moisture down there, and if a gas furnace or water heater that draws its air naturally sits in the space, it can create a deadly situation. Ask us before you cover a vent.
Your price depends on what's under your house, so I give you a number after I've been down there. Water or drainage fixes, old insulation that has to come out, how tight the space is and whether we do the floor or the walls all move it. Spray foam costs more than batts.
The schedule depends on whether water work comes first, how much old material comes out and whether a permit is needed, and I'll lay that out at the estimate. With batts, most people stay home while we work. If we use spray foam, I'll tell you up front when you and your pets can come back inside.
Clear a path to the crawl space access and move anything stored near it, so we can get in without shifting your things. Keep pets away from the opening on work day, and tell us about any water you've seen down there since the estimate.
In Rohnert Park, only a licensed California contractor or the legal owner of the property can be issued a building permit. The city takes applications online and books inspections through its online portal, and you can call building staff at 707-588-2240 with questions. When your job needs a permit, we apply for it as your contractor.
California's licensing board has a class for insulation and acoustical contractors, who install any kind of insulating material to control temperature or sound. That covers crawl space floors and walls as well as attics. Ask any contractor you're considering how they're licensed before work starts.
When you call (707) 576-6028, tell us whether your crawl space has vents, a gas furnace or water heater down there, and any signs of water, so I come ready to look at the right things.
