101 Exterminators
101 Exterminators
(831) 500-1613

Insulation Services

Insulation Installation in Berkeley, CA

Blown-In Cellulose · Fiberglass Batt · Attic & Crawl Space

After insulation removal or when installing fresh insulation in an uninsulated or under-insulated space, proper installation restores thermal performance and can incorporate pest-resistant products. 101 Exterminators installs blown-in cellulose and fiberglass, as well as batt insulation for crawl space floor installations. Serving Berkeley and surrounding Alameda County.

Free Inspection in Berkeley(831) 500-1613

Local Context

Why Berkeley Homes Need Insulation Install Services

California Title 24 energy standards require minimum R-values that many older homes in Monterey, Salinas, and Hollister do not currently meet. Upgrading insulation in these properties reduces energy costs and meets current standards. Borate-treated cellulose insulation (such as Cocoon or similar products) provides inherent pest resistance, making it an excellent choice for attics in termite-active areas.

Drywood termites in pre-1930 construction are the dominant structural pest concern in Berkeley. The volume of un-treated or under-treated historic housing is exceptionally high. Subterranean termites are active in fog-belt flatland neighborhoods and creek-adjacent properties. Berkeley's real estate market is one of the most active in the East Bay — WDO inspection demand is high and buyers are sophisticated about what a Section 1 finding means for transaction negotiations.

Berkeley Climate

Berkeley's climate transitions from the foggy flatlands near the Bay to the warmer, drier hillside neighborhoods above the UC campus. The flats receive more marine fog, supporting subterranean termite activity in moist soils. The hills and hillside neighborhoods are warmer and drier — ideal drywood termite territory with swarms active from May through October. Annual rainfall averages 22–25 inches in the hills.

Housing Stock

Berkeley's housing stock is among the oldest in the East Bay. The flatland and hillside neighborhoods have exceptional concentrations of pre-1930 construction — Craftsman bungalows, brown shingled homes, and Edwardian flats built by the architects and developers who shaped Bay Area residential architecture. Many of these structures have original old-growth Douglas fir framing, minimal previous termite treatment history, and structural configurations that allow lateral colony spread through shared spaces. The hills have 1920s–1940s construction with their own significant termite histories. Post-war development in South Berkeley and West Berkeley is more modern but not immune.

Why Local Expertise Matters

Berkeley's historic housing stock is among the most complex termite inspection environments in California. The specific structural characteristics of brown shingle homes, the lateral colony spread common in Craftsman blocks, and the historic preservation considerations that affect treatment options all require direct field experience. We bring SPCB License #9119 and deep East Bay expertise to every Berkeley inspection.

Warning Signs

Signs You Need Insulation Install Service in Berkeley

Blown-in cellulose or fiberglass installation to achieve target R-value (typically R-38 to R-60 for California attics). Crawl space joist bay fiberglass batt installation for under-floor insulation. We work to California Title 24 standards and can provide documentation for permit purposes when required.

Attic insulation below R-19 or compressed to less than 4 inches — significant energy loss

Recent insulation removal that needs replacement

Home failing energy audit or experiencing higher-than-expected heating/cooling costs

Crawl space floor insulation missing or falling from between joists

How It Works

Our Insulation Install Process in Berkeley

Every job follows the same methodical approach — no shortcuts, no guesswork. Here is what to expect when you work with us in Berkeley.

01

Existing Conditions Assessment

We measure current insulation depth, note any areas requiring air sealing before installation, and confirm that the attic is rodent-free before new insulation goes in.

02

Air Sealing (As Needed)

Gaps around recessed lights, plumbing penetrations, HVAC ductwork, and top plates are sealed before insulation is blown in to maximize thermal performance.

03

Insulation Installation

Machine-blown cellulose or fiberglass is distributed to uniform depth and density across the attic floor or specified area. Depth gauges are placed and photographed for documentation.

04

R-Value Confirmation

Installed depth is documented and final R-value confirmed. For permit applications, we provide the necessary documentation of materials and installation specs.

Why 101 Exterminators

Insulation Install You Can Count On in Berkeley

Title 24 Compliance

We install to California energy standards with documentation for permit and utility rebate purposes.

Pest-Resistant Options

Borate-treated cellulose provides both thermal performance and inherent pest resistance — termites and cockroaches avoid borate-treated materials.

Common Questions

Insulation Installation FAQs for Berkeley

What R-value do I need for my California attic?

California Title 24 requires R-38 minimum for new construction in most climate zones. For existing homes in Monterey and Santa Cruz counties (Climate Zone 3), upgrading to R-38 or R-49 is recommended. For inland areas like Hollister and South Santa Clara County (Climate Zone 5), R-49 or higher maximizes energy savings due to larger temperature swings.

Insulation Installation · Berkeley

Free Insulation Install Inspection in Berkeley

CA licensed and insured. Written estimate before any work begins. Same-day response available for urgent situations in Berkeley.

Schedule an Inspection(831) 500-1613
Trusted by Berkeley families since 2005