Roofing Contractor in Sebastopol, CA

Mario Contreras Roofing serves homeowners and business owners in Sebastopol with honest, dependable roofing work backed by over 20 years serving Sonoma County. Sebastopol sits close to the coast and its climate is noticeably cooler and wetter than inland Sonoma County cities. That moisture — fog, coastal rain, and damp winters — creates roofing challenges that are different from what you see in drier parts of the county. We know this area well and we know what to look for.

Whether you are near downtown Sebastopol on Main Street, out in the Gravenstein apple country along Gravenstein Highway, or in a rural property off Bodega Avenue, we offer roof repair, roof replacement, roof inspections, gutter installation, and more — with clear pricing and no pressure.

Roof Repair, Replacement, and More for Sebastopol Homes

Sebastopol's proximity to the coast brings consistent moisture — marine fog rolls in regularly, winters are wet, and many properties have large trees that hold shade and dampness against the roof for months at a time. That combination accelerates moss and algae growth, which holds moisture against shingles and breaks them down faster than normal. It also means gutters clog more quickly and flashing around chimneys and vents takes more abuse than in drier climates.

Many homes in Sebastopol — particularly older craftsman and farmhouse-style properties along Gravenstein Highway North and in the downtown area — are at the age where moisture damage has quietly been building for years. An inspection is often the smartest first step before committing to any repair or replacement work.

Start with what your roof needs

A property’s address or age alone does not tell us whether it needs a repair or a new roof. Tell us about leaks, earlier work, and the material if you know it. We assess the condition and explain the proposed work so you can make a decision with useful information.

• Leak diagnosis and repair for new or returning water entry.
• Roof replacement when a wider project makes sense.
• Roof inspections to understand the condition before deciding.
• Commercial roofing with access and building use in mind.
• Gutters and skylights connected to the roof system.

Planning a roofing visit in Sebastopol

Share the project address, your contact details, and any access concerns when you request an estimate. If the property is occupied by tenants or a business, let us know who can provide access and which hours work best. We can discuss your project in English or Spanish.

Our hours are Monday–Friday, 7am–5pm, and Saturday, 8am–2pm. Sunday is closed. For an active leak, call (707) 540-2592 during business hours to discuss current availability.

We also work in neighboring communities. Explore all Sonoma County service areas.