Premier Hollister Spray Foam InsulationPremier Hollister Spray Foam Insulation

Insulation contractor in Castroville, CA - gaps sealed before insulation goes in

Premier Hollister Spray Foam Insulation is an insulation contractor based in Hollister that works in Castroville, sealing attic and crawl space gaps, topping up blown-in insulation and spraying foam where it pays off.

White spray foam fills wall cavities between exposed wooden studs.

How we insulate houses in Castroville

Castroville sits between Salinas and the coast, with Tembladero Slough along its southwest edge. The calls we get here are the ones we get everywhere, a drafty living room, a cold floor over the crawl space, a power bill that won't come down. The houses run from older places on raised floors to newer ones where the attic never got much to begin with. We drive over from Hollister for these jobs, the same way we head out to Interlaken and Salinas.

Most of the rain here falls between October and April, and the summers are close to dry. A crawl space can sit damp for half the year, so before we insulate a floor, I look at the dirt and the vents under the house, because insulation laid over wet ground soaks up water like a sponge.

What sets the price and the schedule

The price comes down to how much attic or crawl space there is, how easy it is to reach, how many inches are already up there, and whether the old stuff has to come out first. Foam costs more than loose fill, so the material you pick moves it too. The schedule turns on the same things, plus the re-entry time on a foam job, which is the wait before you and the pets can come back inside. You get your own figure after I've been up in your attic, because a number from the driveway is a guess.

Why we seal the gaps first

Most drafty rooms and hot upstairs bedrooms we look at are leaking air, not just short on insulation. Air coming up around can lights, pipes, wiring holes and the attic hatch slips right past whatever's lying on top, so piling on more doesn't stop the draft. Our air sealing services close those gaps before any insulation goes in. While I'm up there, I also look for anything that shouldn't get buried, like old wiring that isn't safe. It's the unglamorous part of the job, and it's the part we're known for.

What happens to the old insulation

If what's up there is dry and clean, we usually leave it and add to it. If it's been soaked by a roof leak or rats have been living in it, it comes out, because new insulation on top just buries the problem. We keep the eave vents along the roof edge clear so the attic can still breathe, since a buried vent traps moisture that shows up later in the framing. We also build the edges up as deep as the middle. Plenty of attics we open are piled high in the center and bare at the eaves, which is about as useful as a coat with no sleeves.

Get a free insulation estimate for your Castroville house

Send the form and we'll reply within one business day to set a time for me to come look at your attic and crawl space. The estimate is free, done on site, and there's no obligation to book.

(831) 245-4007

Insulation questions from Castroville homeowners

Do I need a coastal permit to insulate my house in Castroville?

If your house sits in the unincorporated Coastal Zone, Monterey County's coastal permit rules exempt alterations to an existing single-family home, except on a beach or wetland or close to a bluff edge. That doesn't settle other permits, so I check with the building office for each address and we handle any permit the job needs.

Does an insulation contractor need a state license in California?

In most cases, yes. California's Contractors State License Board requires a license when the project needs a building permit, when employee labor is used, or when the contracts total $1,000 or more in labor and materials, and a home improvement business has to be licensed before it bids. We're fully licensed and insured.

How much can a contractor ask for as a down payment in California?

A down payment can't be more than $1,000, and on a small contract the limit is lower still. Every other payment has to be listed in the contract and tied to work already done or materials already delivered. The board says that applies to all home improvement projects.

Is spray foam better than blown-in insulation for my attic?

For most attics, no. Sealing the gaps and topping up blown-in insulation, which is loose fill blown through a hose, usually does the job for less. Foam costs more and seals air while it insulates, so it earns its price when your ductwork runs through the attic. I'll tell you which one your house needs once I've been up there.

Other cities we work in

Any other cities with their own page are listed below, and if yours isn't, call and ask whether we come out your way.