Best insulation contractor in Gilroy CA - a house that stays comfortable all year
Thermal Gilroy Spray Foam Insulation handles attic insulation and spray foam for homes in Gilroy and nearby cities like Morgan Hill. If you've bought an older house, we also pull out old insulation and seal a drafty crawl space.
Insulation contractor work we handle in Gilroy, CA
Spray foam insulation
Spray foam goes on wet, expands into every gap and hardens, so it seals air and insulates in the same pass. It costs more than loose fill, so we usually suggest it where ductwork runs through the attic or a space is hard to seal any other way.
Attic insulation
Hot upstairs or cold all winter? We check how many inches are already up there, seal the gaps and bring the coverage up evenly, all the way out to the edges where it's usually thinnest.
Blown-in insulation
Blown-in insulation is loose fill blown through a hose, and it's how we usually top up an attic that has some insulation but not enough. It settles into corners and around framing that batts tend to miss.
Home insulation
Not sure where the heat is going? We look over the attic, walls and crawl space in person, and the price depends on how much area needs work, whether old material has to come out and which material fits, while the schedule turns on any repairs that need doing first, so the estimate gives you your own number.
Insulation removal
When old insulation got soaked or is full of droppings, laying new material over it just keeps the problem, so we bag it up and clear it out first. If anything up there looks like vermiculite, we'll tell you before anyone touches it so you can plan for it.
Crawl space insulation
Cold floors in winter usually trace back to the open crawl space under the house. We insulate between the floor joists so the rooms above hold their heat.
Wall insulation
We fill the empty walls of older houses through small holes we patch afterward, and we insulate open walls during a remodel before the drywall goes up.
Air sealing services
Air sealing means closing the gaps around pipes, wires, can lights and doors to the attic before any insulation goes in. Skip it and the new insulation ends up fighting a draft.
Basement insulation
We insulate basement walls and the rim joists, the wood band where the house sits on the foundation, so the room down there stops losing heat to the ground.
Closed-cell foam insulation
What is closed-cell foam? It's dense foam that blocks moisture as well as air, which makes it the pick for crawl spaces, rim joists and walls where dampness is a worry.
Open-cell foam insulation
Open-cell foam is softer and lighter than closed-cell, and it fills odd-shaped rooflines and walls while quieting sound between rooms. It costs less than closed-cell and works best where moisture isn't an issue.
Commercial insulation
Property managers call us about offices, shops and rental buildings. We plan the work in the right order so the building can keep running while we're there.
Crawl space vapor barrier
We lay heavy plastic sheeting across the crawl space floor and up the walls so ground moisture stays out of the framing and the insulation.
Vapor barrier installation
A vapor barrier is a sheet that stops moisture from moving into walls, ceilings or floors. We put it on the side that keeps your framing dry, which depends on where in the house it goes.
Attic air sealing
Does the attic hatch let in a draft? We seal the hatch, the can lights and every pipe and wire hole up there before topping up insulation, and we keep the eave vents clear so the attic still breathes.
Retrofit insulation
Retrofit insulation is adding insulation to a house that's already built and lived in, usually an older one. We work through the attic, crawl space and walls without tearing the house apart.
A look at insulation work
Why Gilroy homeowners call our crew
Jobs planned in order
Before anyone climbs into the attic, we lay out what happens first, second and third, so a wiring repair or a leak gets fixed before sealing, and sealing happens before insulation. Insulation laid over a problem only hides it, and you'd find out the hard way later.
You talk with the owner
You talk with me from the first call through the estimate, and I'm the one who comes out to look at your house. Our installers do the work, and I check in along the way and go over the finished job with you. You can read more about how we got started.
Problems flagged up front
We look over your attic, crawl space or walls in person before we price anything. If we spot old wiring, damp spots or insulation that looks like vermiculite, we tell you right then so you can plan for it.
Tell us a bit about your house and set up a time for us to come look.
About usServing Gilroy and nearby cities
Thermal Gilroy Spray Foam Insulation is based in Gilroy, CA, and works in the cities around it, from Morgan Hill to the north down to Hollister. The 12 cities below have their own pages, but they aren't the only places we go, so if yours isn't listed, call (669) 205-6284 and ask.
Tell us about your attic, walls or crawl space
We reply within one business day, then I come out to look at the job in person and write a free estimate, with no pressure to book. At the visit we go over what I found, the order the work would happen in and whether your job needs a permit, which we'd pull and set up inspections for with the city or county office.
- Phone
- (669) 205-6284
- Location
- Gilroy, CA 95020
- Hours
- Mon–Fri: 6 AM–11 PM, Sat–Sun: 7 AM–11 PM