NuShake came out to our house and removed the old roof, installed the new roof with all the trim and the aluminum around the vents, and it looks brand new. They did it all in one day and did an excellent job. I highly recommend them.
Free roof estimates • CSLB #1142280 • 4.5 stars, 107 Google reviews
Attic insulation that lowers Central Valley & East Bay energy bills.
Your roof and attic work together to keep your home comfortable and your energy bills low. NuShake does both: one visit, one contractor, one warranty.
Title 24 Compliant
PG&E Rebate Eligible
GAF Master Elite
Bundle With Your Roof
CSLB #1142280
Free estimates
Mon–Fri 8am–5pm · Sat 8am–12pm
Get your free insulation
project estimate.
Takes 30 seconds. No obligation.
- Licensed — CSLB #1142280
- 5 manufacturer certifications — GAF, Owens Corning, CertainTeed
- Written quote — before any work
- No high-pressure sales — ever
What customers say
4.5 stars across 107 Google reviews.
NuShake did a beautiful job of installing my new roof. The amazing crew seemed to work non-stop and the roof turned out beautifully. My property was completely cleaned of any debris and I commend them all for doing a fantastic job.
The process from start to finish was excellent. Lindsey (office manager) and Sergio (estimator) respond quickly and efficiently to calls, emails, and texts. Edgar, Carlos, and Jose were very communicative when I had questions during the removal, dry rot repair, and installation of new roof.
Why NuShake offers insulation.
A roof job usually stops at the ceiling line. That's a problem, because the attic sits between your roof and your living space — and what happens in your attic directly affects your heating bills, your roof's lifespan, and your home's energy permit compliance.
When you call NuShake for insulation, you get a licensed C-39 roofing contractor who also understands what's happening in your attic.
Insulation services from NuShake.
Blown-In Fiberglass
The most common attic insulation upgrade. Fast installation, no disruption to your living space. Suitable for most Bay Area attic configurations.
Blown-In Cellulose
Made from recycled paper. Dense-pack cellulose fills gaps around blocking and framing that fiberglass batts can miss. Good choice for older homes.
Spray Foam (Open & Closed Cell)
The premium thermal and air-sealing option. Closed-cell spray foam adds structural rigidity and is the best moisture barrier. Higher upfront cost, longer payback period.
Radiant Barrier
Foil-faced sheeting installed in attic rafters. Reflects radiant heat before it reaches your insulation. Best results on south- and west-facing roof sections.
Vapor Barrier
Plastic sheeting on attic floors prevents ground moisture from entering the attic. Important during tule-fog winters (dense Valley ground fog), when attic air stays damp for weeks.
Batt Insulation
Fiberglass or mineral wool batts for framed attic knee walls and cathedral ceiling applications where blown-in is not appropriate.
California energy requirements — what you need to know.
California has the most detailed residential energy code in the country. Title 24, Part 6 (the Building Energy Efficiency Standards) sets minimum R-value requirements for attic insulation whenever a roofing permit is pulled. That means your insulation is part of your roofing permit — not a separate optional project.
| Roofing permits trigger an energy check. When Brian pulls your roofing permit, the inspector verifies that insulation meets current code. If your existing insulation is below standard, you may be required to upgrade it before the permit closes. |
| R-49 is what the code calls for when attic insulation is added. That's roughly 15–20 inches of fiberglass or cellulose. Many Bay Area homes built before 1990 have R-11 or R-19 — far below today's code. |
| Air sealing comes with it. Homes in Livermore, Dublin, and the Tracy area — where summer temperatures regularly hit 100°F — see meaningful utility bill reductions from R-49 and a sealed attic floor. |
| PG&E offers rebates for qualifying upgrades. The Energy Upgrade California program funded by PG&E provides cash rebates for insulation upgrades that improve your home's overall energy score. Brian's crew documents the installation to support your rebate application. |
Central Valley & East Bay thermal challenges — why insulation
matters here.
The Central Valley & East Bay have unusual thermal demands that affect how much your insulation does for you. Understanding your specific climate zone helps set realistic expectations.
Valley heat makes insulation work harder. Summer highs in Stockton, Manteca, and Tracy often reach 100–105°F, and an under-insulated attic can climb past 140°F. That heat ages shingles from below and forces your AC to run longer every afternoon. In winter, tule fog (dense Valley ground fog) keeps attic air damp for weeks, so air sealing and vapor control matter too. Across our service area, Title 24 (the state energy code) calls for R-49 when attic insulation is added or replaced, and applies cool-roof rules to many re-roofs.
Delta & East County (Antioch, Brentwood)
Hot, dry summer afternoons cooled by evening delta breezes. Air sealing plus R-38 or better keeps daytime heat out and evening cool air in.
Inland East Bay (Livermore, Dublin, Pleasanton)
Hot summers, mild winters. Cooling costs drive the insulation ROI. Radiant barriers plus R-49 attic insulation lower air-conditioning costs.
North Central Valley (Stockton, Tracy, Ripon)
High summer heat and valley radiation. Often the highest cooling bills in the service territory. Insulation upgrades have the fastest payback here.
Brian's audit looks at your climate zone, your existing insulation depth, your attic ventilation, and your utility bills. You get a written recommendation — not a sales pitch.
R-value targets by application.
| Application | California Minimum | Energy-Conscious Upgrade | Notes |
|---|---|---|---|
| Flat attic floor (most homes) | R-49 when added | R-49 + air sealing | Blown-in fiberglass or cellulose; done in one day. |
| Cathedral ceiling / vaulted | R-22 (R-19 when an existing ceiling is altered) | R-38 | Requires rigid foam or spray foam; more complex. |
| Knee wall (attic over living space) | R-13 (2×4 wall) / R-20 (2×6 wall) | R-30 | Batt insulation. |
| Crawl space floor | R-19 | R-25 | Batts or spray foam between floor joists. |
R-values reflect California Climate Zone 12, which covers most of our Central Valley & East Bay service area. Your zone may vary. Brian confirms zone and requirements at the inspection.
How we combine roof replacement and insulation.
When you replace your roof and upgrade your insulation in the same project, you get structural alignment that you can't get from two separate contractors on two separate visits.
| Thermal audit. Brian or Mark inspects your attic — existing R-value, air leaks, ventilation balance, and moisture signs. You get a written summary. |
| Combined plan. Roof replacement specs and insulation specs are written together. Ventilation requirements (ridge vents, soffit vents, baffles) are coordinated — an attic insulation upgrade that blocks soffit ventilation causes more problems than it solves. |
| Roof first, then insulation. The roof replacement happens first. Any attic ventilation components are installed during tear-off. Then the insulation crew blows new material over the entire attic floor, working around new ventilation baffles. |
| Documentation. You receive installation records showing R-value achieved, material used, and square footage covered. Use this for Title 24 permit documentation and PG&E rebate applications. |
| Optional blower door test. For comprehensive energy projects, Brian can coordinate a blower door test with an energy auditor to verify that air sealing is effective before closing out the permit. |
Bundle it with your roof replacement and the combined project costs less than doing the two separately. The crew is already staged, the attic is already open, and the coordination overhead drops significantly. Brian shows the line-item breakdown in every estimate.
Insulation FAQ.
Yes. California's Title 24 energy code requires that roofing permits include an energy compliance check. If your attic insulation is below current standards, you may need to upgrade it as a condition of your roofing permit. Brian's crew installs insulation to meet or exceed current Title 24 R-value requirements, and provides documentation for your permit file.
PG&E's Energy Upgrade California program offers rebates for insulation upgrades that improve your home's overall energy efficiency. Rebate amounts vary by measure and program cycle — call PG&E or check their website for current figures. Brian's crew installs to qualifying R-value levels and can provide the documentation required for rebate applications.
Yes. Adding blown-in insulation to an existing attic is one of the most cost-effective energy upgrades a Bay Area homeowner can make. No roof work is required. Brian's crew accesses the attic through the interior hatch and blows new material over the existing insulation. The work is completed in one day on most homes.
Under the 2025 California Energy Code, adding or replacing attic insulation calls for R-49 in most climate zones, including the Bay Area and the Central Valley; attics that already have R-38 or more are exempt. R-49 makes a meaningful difference in heating and cooling bills — especially useful for inland East Bay cities like Livermore and Dublin, which see 100°F summer days.
NuShake offers insulation alongside roofing because the roof and attic work as a single thermal envelope. NuShake keeps the crew skills and equipment for both, which means one visit, one contractor, and one warranty for the whole thermal envelope.
A radiant barrier is a foil-faced layer installed in the attic rafters. It reflects solar radiant heat before it reaches your insulation layer. Radiant barriers are most effective in hot climates and on homes with steep south- or west-facing roof sections. For Bay Area homes with afternoon sun exposure, a radiant barrier can lower attic temperatures and cooling costs.
Every insulation job is priced after a free on-site estimate and given as a written quote; your cost depends on attic size, existing insulation depth, material (blown-in fiberglass, cellulose, spray foam, or radiant barrier), and the ventilation work required. Bundled with a roof replacement, the combined project costs less than doing the two separately — the crew is already staged and the attic is already open. PG&E rebates may offset a portion of the cost.
Cities we serve — insulation
and roofing.
Your roof and attic should work together — let Brian make sure they do.
Brian Espindola started in the trade at 18, tearing off roofs. He has seen what a poorly insulated attic does to a roof from the inside. Get a free insulation estimate — no pressure, no obligation.
NuShake Roofing • 540 Frontage Rd, Ripon, CA 95366 • CSLB #1142280 • Mon–Fri 8am–5pm · Sat 8am–12pm