Licensed Insulation Company in Orinda, CA

It helps both ways here. Orinda sits in California’s Title 24 Climate Zone 12, the inland zone with genuinely hot summers and cool winters, not the mild coastal fog belt just over the Berkeley hills. That means good attic insulation and air sealing cut your summer cooling load and hold heat on cold Lamorinda winter nights, so the payback works in both seasons. It is a very different calculation than a bay-facing home a few miles west.

Orinda does not run its own building department, so the City contracts with Contra Costa County for building permits and inspections. Applications go through the County’s digital ePermits portal, and inspections are scheduled through the County on the automated line at 925-646-4108, while the City of Orinda Planning Department at 22 Orinda Way handles planning review. On our larger Orinda projects we manage that County permit and inspection process for you.

Yes. Insulation has to be inspected before it is concealed behind drywall, which is standard under the building code the County enforces for Orinda. That matters most in Orinda’s older Orinda Village homes from the 1920s, where an inspection can also catch things like aging knob-and-tube wiring in the attic before new insulation is added on top of it. We schedule the County inspection so nothing gets buried before sign-off.

It usually is. Most Orinda homes were built between 1950 and 1970, and neighborhoods like Glorietta, Sleepy Hollow, and Orinda Downs are full of single-story ranch houses built to insulation standards far below today’s Zone 12 targets. A ranch has a large attic footprint for its square footage, so an under-insulated attic has an outsized effect on comfort and energy bills, which makes whole-house re-insulation and air sealing one of the highest-return jobs we do on these homes.

Be careful with old rebate claims. The broad BayREN cash rebate for individual insulation and air sealing ended in August 2024, so it is no longer claimable. The current path is income-qualified: PG&E’s Energy Savings Assistance Program offers no-cost attic insulation and weatherization to qualifying households, and BayREN’s EASE Home Program covers most of the project cost for eligible homeowners. We help Orinda homeowners check whether they qualify before committing to anything.

Orinda is a wooded hillside community wrapped in oak woodland, EBMUD watershed land, and open space, and that habitat is ideal for roof rats, which climb tree limbs, fences, and utility lines straight into attics and eaves. Contra Costa Mosquito and Vector Control (925-685-9301) will inspect and confirm what you have for free, but they do not do the exclusion or clean-up. That is our work: we remove the contaminated insulation, seal the entry points, and re-insulate so it does not come back.

It can. Many Orinda homes are raised-foundation or daylight-basement houses built into slopes, and hillside lots funnel winter rain runoff and subsurface moisture under and against the foundation. Combined with Zone 12’s wet, cool winters, that leaves vented crawl spaces damp and degrades old batt insulation. On these homes we assess moisture first and often recommend a vapor barrier or encapsulation, not just new batts, so the insulation actually stays dry and effective.