Insulation contractor in Campbell, CA - sealed attics and even upstairs rooms
Thermal Gilroy Spray Foam Insulation is an insulation contractor working in Campbell, CA. We seal attic gaps, top up or replace tired insulation and spray foam where it fits, in homes and commercial buildings.
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Campbell's mix of older and newer homes
On our jobs in Campbell, we go from older one-story houses on quiet streets to two-story homes, townhouses and the small shops and offices along the main roads, sometimes all in the same week. It feels a lot like nearby Saratoga and Santa Clara that way, with a house that's had the same attic for decades sitting a few doors from one that was redone not long ago.
That mix is why I never assume what's up there. Two houses on the same block can need completely different work, so each one gets its own look and its own plan.
Working in Campbell: permits, licenses and what sets the price
The City of Campbell's building department issues permits for all construction in the city, so whether your insulation job needs one is the city's call, and I check before we set a start date because a permit review can add weeks to the schedule. On any job under a Campbell permit, the contractor has to keep a state license and bond in good standing with the Contractors State License Board and hold a current City of Campbell business license for the whole job, so those are two fair things to ask any contractor you're talking to.
As an insulation contractor based in Gilroy, CA, we're licensed and insured, and when a Campbell job needs a permit, we pull it and set up the inspections with the city so you're not chasing them. On the older streets near downtown, I check at the estimate where our truck can park close enough to run the hose. The price mostly turns on how much old insulation is up there and whether it can stay, how many gaps need sealing, how easy the attic is to reach and whether loose fill or foam fits the house, while the schedule hangs on whether old material comes out first and whether the city has a permit to review, and the written plan I walk you through gives you your own figures.
What do Campbell houses need most from insulation?
Older houses here usually have a few inches of insulation that has packed down over the years, and the bigger problem is often what's underneath it, like gaps around can lights, pipes and the attic hatch, a tired wire or droppings in the old material. That's why I look before we add anything, since fresh insulation laid over a leak or a wiring problem just hides it, and some attics need the old material pulled and the gaps sealed before anything new goes down.
Two-story homes and townhouses bring a different call, the room over the garage that's hot when the rest of the house is fine. That's usually thin or gapped insulation in the floor and the short walls around it, which we seal and fill, or foam when the space is too tight for loose fill.
- Call (669) 205-6284
- Mon–Fri: 6 AM–11 PM, Sat–Sun: 7 AM–11 PM
- Gilroy, CA 95020
Insulation work we do in Campbell
Attic insulation
Most Campbell calls start in the attic, where older houses tend to have a few inches of settled insulation. We seal the gaps first, then bring the coverage up evenly all the way out to the edges, not just piled deep in the middle.
Attic air sealing
Drafty rooms and a climbing power bill often trace back to gaps around can lights, pipes and the attic hatch. We start with air sealing, closing those gaps before any insulation goes down, because insulation can't stop air pouring through a hole.
Insulation removal
When the old insulation in an older Campbell attic is soaked or full of droppings, topping it up just keeps the problem. We pull it out, clean up and get the cause fixed before new material goes in.
Spray foam insulation
Rooms over the garage and attics with ductwork running through them are where we use spray foam most, because it seals air and insulates in one pass. We plan foam days ahead so you know exactly when your household needs to be out.
Wall insulation
Some older homes here have little or nothing in the outside walls, and you feel it as cold, drafty rooms. We add blown-in insulation, loose fill blown through a hose, into the wall cavities through small holes we patch afterward, so the walls don't have to come open.
Commercial insulation
Property managers call us about the shops and offices around Campbell, where a space that runs too hot or too cold wears on tenants and owners alike. We plan commercial insulation work in the right order and talk through access and timing with you before we start.
What happens when you call us about your Campbell house
Call or send a message
You call and I answer, or I call you back to ask a few questions about the house and set a time to come out. Tell me what's bugging you, like a hot room upstairs or cold floors, so I know where to look first.
Walk through the house together
I come out myself to check the attic, walls or crawl space, and it helps if you're home to show me the rooms that bother you. You get a written plan listing anything that needs fixing first and what drives the price, so you know the cost before you decide.
Get the permit through review
If your job needs a Campbell permit, this is when it goes to the city. When plans are reviewed, the city's guide asks you to allow at least 4 to 6 weeks for the first check and 2 to 4 weeks for any later round, so we set the start date around that.
Install in order, then review
Our installers work in order, fixing and sealing first and insulating last, within the city's construction hours of 8 AM to 5 PM on weekdays and 9 AM to 4 PM on Saturday, with no work on Sundays or holidays. Before we pack up, I go over the finished job with you.
Get a written insulation plan for your Campbell home
Send the form and I'll get back to you within one business day to set up a time to see your Campbell house. The on-site estimate and the written plan are free, and there's no pressure to book.
- Licensed and insured.
- Phone
- (669) 205-6284
- Location
- Gilroy, CA 95020
- Hours
- Mon–Fri: 6 AM–11 PM, Sat–Sun: 7 AM–11 PM
Questions about insulation in Campbell
How much does it cost to insulate an attic in Campbell?
Your price comes from what I find in the attic, so you get it in the written plan after I look, not as a guess over the phone. Pulling out soaked or dirty insulation, sealing a lot of gaps around lights and ducts, or choosing foam over loose fill all raise it. A clean attic that just needs its gaps sealed and a top-up usually keeps it lower.
What is the best way to insulate a Campbell attic, spray foam or blown-in?
For most attics, sealing the gaps and topping up with blown-in insulation gives you the most for your money. Foam costs more, so I save it for attics where the ductwork runs through or where loose fill can't sit right. I'll tell you which fits your house at the estimate, and why.
Do we have to leave the house when you install spray foam insulation?
Yes, for spray foam you, the kids and the pets stay out while it goes in and through the re-entry time, the wait before you can come back inside, which the foam maker sets for each product. Blown-in and air sealing jobs usually let you stay home. I'll lay out the day for your house at the estimate so you can plan around it.
Can I pull my own permit for insulation work in Campbell?
If you act as your own owner-builder, the city has you sign and submit disclosure forms with the permit application. The city's permit guide says an LLC can't be an owner-builder, so if an LLC owns the house, a licensed contractor is required. When you hire us, we handle the permit if your job needs one.
What happens if a Campbell building permit sits too long?
It expires. An application expires without a refund of fees if no permit is issued within 180 days of submittal, and an issued permit expires unless the work passes an inspection every 180 days. The city's building official can grant extensions case by case before those dates, and when we hold the permit, I keep the inspections moving.
How do I tell if my Campbell attic needs more insulation?
Shine a flashlight through the attic hatch, and if you can see the tops of the ceiling joists, the wood beams the ceiling hangs from, you likely need more. Hot or cold rooms, drafts around lights and outlets and a power bill that keeps creeping up are other signs. At the estimate I measure how many inches are up there and check the edges, where coverage is often thinnest.
Book a look at your Campbell attic
If you're about to finish the room over the garage or close up a wall, call (669) 205-6284 now so we can insulate while it's still open and easy to reach.
Request an estimateCall (669) 205-6284