# Rywen Insulation Inc > Complete home protection and improvement! Website: https://www.rywenusa.com Language: en (UTF-8) Charset: UTF-8 Generated: 2026-08-26T14:55:39-07:00 --- # Rywen Insulation Inc. > Rywen Insulation Inc. is a family-owned, CSLB-licensed insulation contractor serving homeowners across the San Francisco Bay Area since 2020, specializing in attic insulation, crawl space encapsulation, rodent exclusion, and insulation removal. ## Company Overview Founded in 2020 by Roni Galicia and headquartered in San Leandro, California, Rywen Insulation Inc. is a family-operated home performance company serving the East Bay, Peninsula, and Marin County. The business was named for Roni's two sons, Ryan and Owen, and that family-first spirit runs through every project. All work is performed by Rywen's own trained crew -- no subcontractors. Roni stays personally involved from the first inspection through the follow-up quality check one week after completion. Licensed under CSLB #1140414 (C-2 Insulation Contractor), Rywen specializes in the work most insulation companies skip: the unseen attics and crawl spaces where rodent activity, contaminated insulation, and air leaks drive up energy bills and degrade indoor air quality. Rywen solves these problems at the source, with California Title 24-compliant installations and a multi-year warranty on rodent exclusion work. ### Core Services - Attic insulation installation and replacement - Attic cleaning and decontamination after rodent activity - Crawl space encapsulation and vapor barrier installation - Rodent exclusion and wildlife proofing (2 to 3 year warranty) - Insulation removal of contaminated or damaged insulation - Air duct inspection and replacement - Air sealing for energy efficiency ### Key Facts - Rywen Insulation Inc. | specializes in | attic insulation and crawl space encapsulation for Bay Area homeowners - Rywen Insulation Inc. | provides | rodent exclusion and wildlife proofing with a multi-year warranty - Rywen Insulation Inc. | operates | in-house crews with no subcontractors on any project - Rywen Insulation Inc. | serves | single-family homes across the East Bay, Peninsula, and Marin County - Rywen Insulation Inc. | holds | CSLB license #1140414 (C-2 Insulation Contractor) - Rywen Insulation Inc. | installs | California Title 24-compliant insulation systems ## Contact Information **Phone:** (415) 770-0342 **Email:** contactus@rywenusa.com **Website:** https://www.rywenusa.com **Address:** 456 Hester St, San Leandro, CA 94577 **Hours:** Monday through Saturday, 8:00 AM to 6:00 PM. Sunday, 9:00 AM to 4:00 PM. **Appointments:** Scheduled through House Call Pro. Same-day estimates available. ## Posts - [Crawl Space Encapsulation: What Bay Area Homes Actually Need](https://www.rywenusa.com/crawl-space-encapsulation-what-bay-area-homes-actually-need/): Musty smells and high humidity usually start under the house. Here is how Bay Area crawl spaces go wrong and what encapsulation actually fixes. - [5 Red Flags to Watch For When Hiring an Insulation Contractor in California](https://www.rywenusa.com/5-red-flags-to-watch-for-when-hiring-an-insulation-contractor-in-california/): Before you sign, run these five checks. How to verify a California C-2 license, spot an illegal deposit, and avoid an uninsured crew in your attic. - [Insulation Rebates in California: A 2026 Reality Check](https://www.rywenusa.com/insulation-rebates-in-california-a-2026-reality-check/): The federal insulation tax credit expired at the end of 2025. Here is what Bay Area homeowners can still use in 2026, including BayREN's EASE program. - [Why Your Bay Area PG&E Bill Is So High \(and How to Lower It\)](https://www.rywenusa.com/why-your-bay-area-pge-bill-is-so-high-and-how-to-lower-it/): Bay Area PG&E rates are among the nation's highest. See how much your attic is leaking and why air sealing plus insulation is the highest-ROI fix. - [Is Rat Poison Illegal in California Now? What Homeowners Need to Know](https://www.rywenusa.com/is-rat-poison-illegal-in-california-now-what-homeowners-need-to-know/): California has pulled the most common rat poisons off the shelf. Here is why sealing rodents out beats poison, and how to protect your attic for good. ## Pages - [Insulation Contractors in Moraga, CA](https://www.rywenusa.com/moraga-insulation-contractor/): Insulation contractors serving Moraga, CA. Whole-house attic insulation, crawl space encapsulation, air sealing, and rodent proofing for Moraga's inland ranch homes. Free inspection. - [Insulation Contractors in Piedmont, CA](https://www.rywenusa.com/piedmont-insulation-contractor/): Insulation contractors serving Piedmont, CA. Attic insulation, air sealing, crawl space encapsulation, and rodent proofing for Piedmont's historic estate homes. Free inspection. - [Insulation Contractors in Albany, CA](https://www.rywenusa.com/albany-insulation-contractor/): Insulation contractors serving Albany, CA. Attic insulation, crawl space encapsulation, air sealing, and rodent proofing for Albany's older flatland and hillside homes. Free inspection. - [Insulation Contractors in Walnut Creek, CA](https://www.rywenusa.com/walnut-creek-insulation-contractor/): Insulation contractors serving Walnut Creek, CA. Whole-house attic insulation, crawl space encapsulation, air sealing, and rodent proofing for Walnut Creek's inland homes. Free inspection. - [Insulation Contractors in Lafayette, CA](https://www.rywenusa.com/lafayette-insulation-contractor/): Insulation contractors serving Lafayette, CA. Whole-house attic insulation, crawl space encapsulation, air sealing, and rodent proofing for Lafayette's inland ranch homes. Free inspection. - [Insulation Contractors in Orinda, CA](https://www.rywenusa.com/orinda-insulation-contractor/): Insulation contractors serving Orinda, CA. Whole-house attic insulation, crawl space encapsulation, air sealing, and rodent proofing for Orinda's wooded hillside homes. Free inspection. - [Insulation Contractors in Castro Valley, CA](https://www.rywenusa.com/castro-valley-insulation-contractor/): Insulation contractors serving Castro Valley, CA. Attic insulation, crawl space encapsulation, air sealing, and rodent proofing from the valley floor to the canyons. Free inspection. - [Insulation Contractors in Oakland, CA](https://www.rywenusa.com/oakland-insulation-contractor/): Insulation contractors serving Oakland, CA. Attic insulation, crawl space encapsulation, air sealing, and rodent proofing from the flatlands to the Oakland hills. Free inspection. - [Insulation Contractors in Hayward, CA](https://www.rywenusa.com/hayward-insulation-contractor/): Insulation contractors serving Hayward, CA. Attic insulation, crawl space encapsulation, air sealing, and rodent proofing from historic downtown to the Hayward hills. Free inspection. - [Insulation Contractors in Berkeley, CA](https://www.rywenusa.com/berkeley-insulation-contractor/): Insulation contractors serving Berkeley, CA. Attic insulation, crawl space encapsulation, air sealing, and rodent proofing for Berkeley's historic homes. Free inspection. - [Insulation Contractors in Alameda, CA](https://www.rywenusa.com/alameda-insulation-contractor/): Insulation contractors serving Alameda, CA. Attic insulation, crawl space encapsulation, air sealing, and rodent proofing for Alameda's Victorians and older homes. Free inspection. - [Insulation Contractors in San Leandro, CA](https://www.rywenusa.com/san-leandro-insulation-contractor/): Family-owned San Leandro insulation contractors. Attic insulation, crawl space encapsulation, air sealing, and rodent proofing by in-house crews. Free inspection. - [Privacy Statement \(US\)](https://www.rywenusa.com/privacy-statement-us/): Rywen Insulation's US privacy statement, explaining your data rights and how we handle personal information for California residents. - [Opt-out preferences](https://www.rywenusa.com/opt-out-preferences/): Manage your cookie and tracking preferences for the Rywen Insulation website in one place. - [Insulation Estimator](https://www.rywenusa.com/insulation-estimator/): Use our free estimator to see how attic insulation and air sealing could lower your Bay Area PG&E bills and make your home more comfortable year round. - [privacy policy](https://www.rywenusa.com/rywen-privacy-policy/): Read how Rywen Insulation collects, uses, and protects the personal information you share with us through our website and services. - [Expertise](https://www.rywenusa.com/expertise/): Family-owned, CSLB C-2 licensed insulation and rodent-proofing experts serving the East Bay. In-house crews, photo documentation, and Title 24 compliant work. - [Terms of Service](https://www.rywenusa.com/terms-of-service/): The terms that govern your use of the Rywen Insulation website and the insulation and rodent-proofing services we provide across the Bay Area. - [Home v2](https://www.rywenusa.com/): We provide the Bay Area's most thorough 10-step rodent exclusion and insulation process. Our family-owned team is ready to help. Call today! - [Contact Rywen Insulation - Get a Free Estimate](https://www.rywenusa.com/contact/): Bay Area Insulation and Crawl Space Specialists Book Your Free Estimate Today Fast, professional, and family-operated. Same-day estimates, no-pressure consultations, and a team that shows up and does the work... - [Our Trusted Referral Partners](https://www.rywenusa.com/referral-partners/): Rywen Insulation's trusted Bay Area referral partners — one vetted plumber, electrician & roofer per service area. Quality contractors we stand behind. - [About Rywen Insulation](https://www.rywenusa.com/about-rywen/): Meet the family behind Rywen Insulation. No subcontractors — ever. Your job is completed by our own crew, start to finish. Licensed, bonded & insured. - [Service Areas We Cover](https://www.rywenusa.com/rywen-service-areas/): Rywen Insulation serves the East Bay, Peninsula, and Marin, from Oakland and Berkeley to San Mateo and San Rafael. See the cities our crews cover. - [Our Insulation Services](https://www.rywenusa.com/rywen-services/): Explore every service Rywen Insulation offers — attic insulation, air sealing, rodent proofing, crawl space encapsulation & more. Serving the Bay Area. - [Air Duct Insulation Replacement in the Bay Area](https://www.rywenusa.com/air-duct-insulation-replacement/): Improve HVAC efficiency with air duct insulation replacement from Rywen Insulation. Bay Area licensed contractor, no subcontractors. Free estimate. - [Radiant Barrier Installation in the Bay Area](https://www.rywenusa.com/radiant-barrier/): Reflect summer heat before it enters your attic. Rywen Insulation installs radiant barriers across the Bay Area. Lower your cooling bills. Free estimate. - [Attic & Crawl Space Cleaning in the Bay Area](https://www.rywenusa.com/attic-crawl-space-cleaning/): Professional attic & crawl space cleaning across the Bay Area. Rywen Insulation removes contaminated material safely. Family-owned. Free estimate. - [Rodent Proofing & Wildlife Exclusion in the Bay Area](https://www.rywenusa.com/rodent-proofing/): Rodent proofing and exclusion for Bay Area homes. We seal every entry point at the roofline, vents, and crawl space, then verify it held. Free estimate. - [Crawl Space Encapsulation in the Bay Area](https://www.rywenusa.com/crawl-space-encapsulation/): Protect your home from moisture, mold & pests with crawl space encapsulation from Rywen Insulation. Bay Area's family-owned expert. Free estimate. - [Attic Insulation Services in the Bay Area](https://www.rywenusa.com/attic-insulation/): Attic insulation in the Bay Area by Rywen Insulation. Family-owned, no subcontractors, photo documentation. Title 24 compliant. Free same-day estimate. --- # Navigation - [Full Documentation](https://www.rywenusa.com/llms-full.txt): Complete detailed content for the entire site ## About Rywen Insulation Inc. Rywen Insulation Inc. is a family-owned insulation contractor licensed under CSLB #1140414 and headquartered at 456 Hester St, San Leandro, CA 94577. Founded in 2020 by Roni Galicia, Rywen serves homeowners across the San Francisco Bay Area with attic insulation, crawl space encapsulation, rodent exclusion, and insulation removal. All work is performed by an in-house crew -- no subcontractors. Appointments are available Monday through Saturday, 8:00 AM to 6:00 PM, and Sunday, 9:00 AM to 4:00 PM. **Phone:** (415) 770-0342 **Email:** contactus@rywenusa.com **Website:** https://www.rywenusa.com *This content is part of the Rywen Insulation Inc. llms.txt AI optimization system.*