Retrofit insulation in Hollister CA - comfort without tearing your walls open
If the upstairs runs hot or the rooms feel drafty, we seal the gaps and add insulation to the house you already have.
I come out to look myself
When you call, I'm the one who looks at your attic, crawl space or walls to see what's there, not a salesman with a clipboard. Our crew does the install, and I check the work before we call it done.
Problems found before insulation goes in
We've been in business since 2017, and we're best known for the unglamorous part. We find the leaks, the soggy old insulation and whatever the mice left behind, so none of it gets buried under the new layer.
Fully licensed, insured and straight with you
We're fully licensed and insured. Satisfaction guaranteed on every job, and I'd rather tell you a job isn't worth doing than sell you one. Call (831) 245-4007 or use the form to set up a visit.
Retrofit insulation in Hollister
Retrofit insulation in Hollister means adding insulation to a house that's already built, on the attic floor or inside the walls, without tearing it apart. It's for owners of older houses with hot upstairs rooms, drafts or a power bill that keeps climbing.
The first decision is attic, walls or both. The attic is usually where we start, because we can reach the whole floor from the hatch and seal the gaps while we're up there, and the walls come next when rooms still run hot or cold after the attic is done. California's contractors board has its own license classification for insulation work, so ask anyone you're comparing which license they hold.
The price moves with how much attic floor and wall there is, how many inches are already up there, and whether the old insulation has to come out first because it's soaked or full of droppings. The schedule turns on what turns up when I look at the attic, since old wiring or bad insulation gets handled before anything new goes in, and on whether the job needs a permit. Your written estimate puts all of that in order for your house.
Retrofit insulation, air sealing and the rules around it
Seal the attic, then top it up
Most retrofits start in the attic, and we seal before we insulate. Air sealing, closing the gaps around can lights, pipes and the hatch, keeps the new layer from fighting a draft. Then we blow in loose fill through a hose, as deep at the edges as in the middle, with the eave vents left clear. Foam costs more and seals while it insulates, so spray foam insulation usually earns its price when your ducts run through the attic. Otherwise sealing and topping up wins, and our attic insulation page covers the rest.
Walls, ideally alongside new siding
Older houses can usually take insulation without much tearing apart, and the walls are where that matters most. If new siding is on your list, that's a good time to do the walls too, because the old siding is coming off anyway and the patches end up under the new. Filling from inside works as well, but the guidance for that work calls for protecting the floor below and closing off the area so dust doesn't travel, so plan on that room being out of use while we're in it.
California rules for existing houses
California's Energy Code covers changes to existing houses, not just new ones. The state's guidance says replacing or adding attic insulation can count as altering the ceiling over a heated or cooled room, which brings in its rules for insulating and air sealing a vented attic. The code also sorts the state into climate zones, and what it asks of a house's outer shell depends on the zone. We're based in Hollister and work here and in the cities around it, and I check what applies at your address.
Get your attic and walls looked at before you spend a dime
We reply within one business day to set up a free on-site estimate, with no obligation. Mention your house's age and any can lights, old wiring or siding plans you know about, so I know what to look for.
(831) 245-4007How a retrofit job goes
Call, and I come look
Call (831) 245-4007 or send the form, and we'll get back to you. Then I come out and look at your attic, crawl space or walls myself, checking how many inches are up there and what has to be fixed first.
Written estimate and any permit
You get a written estimate listing what needs fixing first and what we'd do. I check your address with the city or the San Benito County Building Division, which issues building permits, and we handle any permit before work starts.
Crew installs, I check
Our crew does the work, sealing the gaps before any insulation goes in. I check it before we call it done, and then we walk through it with you so you know what went in and where.
Retrofit insulation questions in Hollister
What does attic insulation cost near Hollister?
Attic insulation in the San Jose-Sunnyvale area usually costs about $1,800 to $6,000 per job. That's an area figure for the whole market, not our price, and where your attic lands depends on its size and what we find up there. Our estimate lists what your house needs first and what we'd do.
Can my walls be insulated without opening them up?
Usually, yes. With drill and fill, small holes go in near the top of each wall cavity, the cavity gets filled with blown-in insulation, and the holes are patched, so there's little to tear out. In houses built before 1980, lead safety rules may apply depending on how much wall surface gets disturbed.
Is it safe to insulate around old wiring or recessed lights?
Not until it's checked and the problems are dealt with. Insulation waits until active knob and tube wiring is replaced or properly boxed, and work stops if the old insulation turns out to be vermiculite, which may contain asbestos. Can lights not rated for insulation contact are a serious fire hazard when buried, and the state says to treat an unclear rating as unrated.
Does insulation need upkeep once it's in?
No, insulation doesn't need maintenance once it's in. Left alone, it keeps helping with comfort and cuts down on outside noise too. The usual reasons to go back up are a roof leak, pests or new wiring, and any of those is worth a quick look afterward.