Service Area

Reliable Roofing Services in Your Area

We proudly serve homeowners and businesses across multiple locations with reliable, high-quality roofing services. From minor repairs to full roof replacements, our experienced team delivers the same level of care, professionalism, and long-lasting results on every project—no matter the size.

  • 100% Mobile — we come to you

  • Residential & commercial roofs

  • Durable, energy-efficient

  • Years of experience

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Our Service Area

We offer a full range of residential roofing and exterior services, so you don’t have to hire multiple contractors. Everything is handled by one trusted team.

  • Contra costa county

  • Marin county

  • Alameda county

  • Solano county

Guaranteed To Extend, Restore And Rejuvenate Your Roof!

Tell us about your roof. Let’s Meet.

Frequently Asked Questions

Have questions about your roofing or exterior project? Below are answers to the most common questions homeowners ask Crest Roofing before getting started.

1. How long has Os1 construction inc been in business?

Os1 construction inc brings years of industry experience and a commitment to delivering quality workmanship, reliable service, and customer satisfaction on every project.

2. Do you offer free estimates?

Yes. We provide free, no-obligation estimates for all roofing and exterior services so you can make informed decisions with confidence.

3. What roofing services do you provide?

We handle roof repairs, full roof replacements, inspections, storm damage restoration, and maintenance for residential properties.

4. Are you licensed and insured?

Absolutely. Os1 construction inc is fully licensed and insured to protect both our customers and our team on every project.

5. How long does a typical roof installation take?

Most residential roofing projects are completed within one to two days, depending on the size, materials, and weather conditions.

Service

Roof Repair

Roof Replacement

Storm Damage

Gutters

Siding

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Hours

Mon – Fri: 9:00 AM – 6:00 PM

Sat: 5:00 AM – 8:00 PM

Sun: Closed

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