Cal Spray Foam Insulation

4.8 (33 reviews)

| San Francisco, CA | General Contractor

Cal Spray Foam provides general contracting services in San Francisco, specializing in spray foam insulation for existing homes and new construction.

At a Glance

Category: General Contractor
Location: San Francisco, CA
Rating: 4.8/5 (33 reviews)
Phone: +14156302204
Services: General Contractor, Service, Point Of Interest

Cal Spray Foam Insulation - General Contractor in San Francisco

About Cal Spray Foam Insulation

Cal Spray Foam Insulation is a general contractor based in San Francisco, CA. The company has a 4.8/5 rating from 33 reviews. They specialize in insulation services for properties in the Bay Area.

Their primary service is spray foam insulation installation. This includes open-cell spray foam and closed-cell spray foam, applied in residential and commercial buildings. They also offer insulation removal and replacement, air sealing, and crawl space insulation.

When considering this contractor for a project, clients may inquire about specific R-values for insulation types, project timelines, and warranty information. Verifying their contractor license and insurance status is also advisable. For insulation projects, discussing the specific areas to be insulated and the desired energy efficiency improvements can help ensure project alignment.

Services

General Contractor

Service

Point Of Interest

Establishment

Hours

Friday 6:00-21:00 Monday 6:00-21:00 Tuesday 6:00-21:00 Saturday 6:00-21:00 Thursday 6:00-21:00 Wednesday 6:00-21:00

Business information verified via Google Business Profile. Last updated: 2026.

Last verified: May 2026

Contact

680 Valencia Street

San Francisco, CA 94110

(415) 630-2204

Visit Website

Map

How to evaluate Cal Spray Foam Insulation

Before hiring Cal Spray Foam Insulation for general contractor work in San Francisco, take a few minutes to verify their qualifications and confirm they are the right fit for your project. The right general contractor for one homeowner may not be the right fit for another, so do the diligence up front.

Verify licensing and insurance

Confirm that Cal Spray Foam Insulation carries an active CA contractor license appropriate for the scope of work, plus general liability and workers’ compensation coverage. Ask for the license number and look it up on the state board website. A general contractor that hesitates to share these details is a red flag, regardless of how favorable their reviews look.

Get a written, itemized quote

Request a detailed written estimate that lists materials, labor, permit fees, timeline, and payment schedule. Itemized quotes make it possible to compare Cal Spray Foam Insulation side-by-side with other general contractor options in San Francisco, and they protect you from scope creep once the work begins.

Ask about project experience

Ask Cal Spray Foam Insulation how many projects similar to yours they have completed in the last 12 months, whether they will be the primary on-site team or are subcontracting, and how they handle change orders. Request two or three local customer references and actually call them — reviews on Google are useful but a five-minute conversation reveals much more about how a general contractor actually shows up.

Frequently Asked Questions

What services does Cal Spray Foam Insulation provide?

Cal Spray Foam Insulation specializes in professional residential and commercial spray foam insulation, including attic, wall, and crawl space insulation.

What are the benefits of choosing spray foam insulation from Cal Spray Foam Insulation?

Spray foam insulation from Cal Spray Foam Insulation can lead to significant energy savings (up to 50% on energy and heating bills), prevents air and heat transfer, and acts as a soundproofing solution. They use polyurethane material which is harmful-free and doesn't release toxic fumes or odor.

Does Cal Spray Foam Insulation offer free estimates?

Yes, Cal Spray Foam Insulation offers free estimates for their insulation services. You can request one by calling them or visiting their website.

What areas does Cal Spray Foam Insulation serve?

Cal Spray Foam Insulation serves the entire State of California, including major areas like the Bay Area, Los Angeles, San Diego, Sacramento, and many other cities listed on their website.