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Insulation contractor in San Bernardino County, CA

The cheaper half of fixing a house that will not cool

A licensed Class B general contractor for attic and wall insulation across the West End and the High Desert. We measure what is up there before we quote, we seal the leaks before we add depth, and the depth we are installing is written into your scope rather than left to the crew on the day.

Call 844-534-7336 Get a written estimate

Why this is the first thing we look at

We measure before we quote

Somebody goes into the attic and measures what is actually up there. A quote given from the driveway is a quote for a house nobody has looked at.

Sealed first, then filled

Air leaks get closed before depth is added. Blowing insulation over an open top plate buries the problem instead of fixing it, and it is the commonest reason people pay for insulation and feel no difference.

Licensed and bonded

CSLB # 1105333, Class B General Building, plus a $25,000 contractor bond through Travelers. Both are public record and both are linked further down this page.

Change orders before the work

If the number has to move, you see why and you approve it in writing before anything else is built.

What attic insulation actually does out here

You are paying to cool an attic with almost nothing in it

A house built in San Bernardino County, CA around 1981 went up with roughly R-19 over the ceiling, which was the standard at the time. Current California code asks for something closer to twice that. Then give it forty years: batts settle, wind washes them back from the eaves, rodents flatten runs of it, and every time somebody ran a cable or a fan through the ceiling they pulled a section aside and left it. What is up there now is almost never what the label said.

Depth is only half of it, and it is the half people buy. The other half is air. Warm attic air pours down through unsealed top plates, recessed light housings and an attic hatch with no weatherstrip on it, and blowing another foot of insulation over those holes insulates the holes rather than closing them. That is why we seal first and add second, and why the scope tells you which of the two you are actually paying for. It is also the least glamorous money you can spend on a house out here and usually the best-returning.
Worker sealing a window frame beside newly installed fiberglass insulation

What an insulation installation includes

What the insulation scope covers

Get a written estimate

Every line below is written into your scope before work starts, including the depth we are installing to, so it can be checked afterwards.

  • The attic inspected first, and what is up there measured rather than guessed at
  • Air sealing at top plates, recessed light housings, and the attic hatch
  • Settled or rodent-damaged material removed and hauled away where it needs to go
  • Blown-in or batt insulation to an agreed depth, with a depth ruler left in the attic
  • Eave baffles kept clear so the attic can still breathe, and ventilation checked
  • Wall and garage-ceiling insulation where walls are open as part of other work

Start with the written scope

The next step is your job on paper

You have just read how the work runs. The next move is a walkthrough of your house, a written scope of what the job covers, and a schedule carrying the same stages. Ask for all three before you commit to anything.

  • Home walkthrough
  • Written scope
  • Working schedule
Ready to put a plan together? Start with a walkthrough with Jerome.
Call 844-534-7336 Get a written estimate

Free estimate · No obligation

Insulation and air sealing

Close the air paths before adding more material

Insulation slows heat flow, but moving air can bypass it through penetrations, chases and attic openings. Adding depth without addressing those paths can leave the same drafts and uneven rooms.

Inspect the accessible plane first, seal appropriate gaps and protect required clearances. Then install insulation evenly so the finished depth does not hide missed areas or block needed ventilation.
Insulated supply duct connected to the sheet metal plenum of a newly installed attic heating and cooling unit

Attic work coordination

Keep ventilation, wiring and future service access usable

An attic may carry ducts, electrical junctions, recessed fixtures and mechanical equipment in the same area being insulated. Those components need clearances and access after the work is complete.

Mark service paths and items that must remain visible before material is installed. The goal is a continuous thermal layer without burying the things a technician or inspector will need to reach later.
Close view of labeled wires and breakers inside an electrical panel

Reviews from San Bernardino County, CA homeowners

Every one of them is public, and every one is on Google

  • Steve Cowens

    2026-03-11

    My wife and I called Jerome directly at Socal Home Improvement. I heard him on KJLH Radio, Station advertising his business. When calling him, he set up an appointment to come out the same day, which was outstanding perfect. I must say on his arrival he was very professional and knew his job very well…

  • Rewa Cooper

    2026-05-15

    We recently completed a 6-week renovation with Jerome’s So Cal, and we couldn’t be happier with the results. As with any renovation, there were a few ups and downs along the way, but every concern we brought to their attention was addressed quickly and professionally…

  • jacqueline wright

    2026-03-27

    My Jerome’s SoCal Home Improvement experience was great. He remodeled my two bathrooms and I was very pleased and impressed with the outcome. Jerome’s team was amazing. They were punctual, efficient, hard working, courteous, skilled fast and accommodating. They clean behind their work; leaving no mess. His worker came to me at each stage of the progress to ensure I approved the work…

  • Debra Tucker

    2026-03-10

    I've worked with Jerome and his staff on two separate occasions. They are very professional and very nice. I had my house painted, windows replaced and a roof. my home is beautiful…

  • Joseph Ford

    2026-03-31

    Very reliable and professional company. Communication was clear throughout the project, and the final result was perfect. I highly recommend Jerome's SoCal Home Improvement

  • Elijah Brooks

    2026-03-31

    Jerome's SoCal Home Improvement did an amazing job on my house renovation! The team was professional, punctual, and paid attention to every detail. Highly recommended for anyone looking for quality work

Questions about Insulation

Straight answers before you commit

All questions
Will more insulation actually lower my electricity bill?
In a 1981 house out here, usually yes, and the effect is largest in August when it costs you the most. What we will not do is put a percentage on your bill, because that number depends on your thermostat, your windows, your duct and the state of your AC, and anyone who quotes you a saving before going into your attic has made it up. We will tell you what is up there now and what we would change.
How much insulation should a house out here have?
Substantially more than 1981 code required. Houses of that vintage were built to around R-19 over the ceiling and current California code asks for roughly double, with the exact figure depending on which climate zone your town sits in, and the High Desert and the West End are not the same zone. We tell you your number and where it comes from.
Does the old insulation have to come out first?
Not always. Dry, clean, settled fiberglass can usually be topped up, and removing it would be spending your money for nothing. It has to come out when it is wet, moldy, contaminated by rodents, or covering something we need to seal or repair. We will show you photographs of what is up there and tell you which of those two you have.
Is it better to insulate or to buy a bigger air conditioner?
Insulate and seal first, in almost every case, and then size the system to the improved house. A bigger unit over a leaky ceiling costs more to buy and more to run and treats the symptom. Doing it the other way around often means the system you needed was smaller than the one you were about to buy.
Can you insulate the walls without opening them up?
Walls can be drilled and filled from outside without a full tear-out, but it is more disruptive to the stucco or the siding than people expect and the result is harder to verify than an attic. The honest order is the attic first, because it is cheaper, does more, and can be inspected. Walls make most sense when they are already open for other work.
Are you licensed for this, and who does the work?
We are a licensed California Class B General Building Contractor, CSLB # 1105333, with a $25,000 contractor bond through Travelers, and the work is carried out under that contract by our crew. Whoever is in your attic is working under our license, and we are the ones answerable for what is left up there.

How your insulation job runs

A written schedule, and what happens once we are in the attic

The full process

Schedule of work

Insulation · CSLB # 1105333

  1. We go up and measure

    Somebody gets into the attic, measures the existing depth in several places, looks at the duct, the hatch and the can lights, and checks whether the eaves are still clear. There is no charge for this and no expectation that you decide anything on the day.

  2. You get the scope and the number

    A written scope, a written schedule and a written number, with the sealing priced separately from the insulation and the target depth stated so it can be verified. Nothing is ordered until you sign.

  3. We seal it, fill it and clean up

    Access protected, the leaks closed, the material blown or laid to the agreed depth, a ruler left up there so anyone can check it, and the house vacuumed on the way out.

If we find something

Opening a wall sometimes turns up rot, old wiring, or a leak nobody knew about. When that happens the work stops and you get a written change order with the new scope and the new number. Nothing further is built until you sign it. You will never learn about an extra cost from the invoice.

Permits are pulled in the licensed name, CSLB # 1105333, and we meet the inspector. That is our job, not yours.

Call Jerome Written estimate

Check the record

Licensed and bonded, and you can verify both

  • Class B General Building ContractorActive
    Number
    1105333
    Issued by
    Contractors State License Board
    Expires
    Verify on Contractors State License Board
  • Contractor's bond
    Number
    $25,000
    Issued by
    Travelers Casualty and Surety Company of America

Get a written estimate

Tell us what is going on with the house

Would rather talk? Call 844-534-7336, open 24 hours Monday to Saturday.

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