Roofing Contractor in Guerneville, CA

Mario Contreras Roofing serves homeowners and business owners in Guerneville with honest roofing work backed by over 20 years serving Sonoma County. Guerneville sits along the Russian River, with redwood shade, damp mornings, and older homes tucked into wooded lots. Roofs here deal with moisture, moss, fallen leaves, and winter storms more than hot inland sun.

Whether you are near Main Street, River Road, or the Johnson Beach area, we offer roof repair, roof replacement, roof inspections, gutter installation, and more — with clear pricing and no pressure.

Roof Repair, Replacement, and More for Guerneville Homes

Homes near River Road, Armstrong Woods Road, and the Russian River often sit under trees or on lots with heavy shade. That shade is nice in summer, but it can slow down roof drying after rain. When a roof stays wet, moss can grow, shingles can lift, and flashing can wear faster.

Many Guerneville homes are older cabins, river homes, and hillside properties. Some have steep roof lines, additions, or gutters that fill fast during storms. We check the roof, roof edges, valleys, vents, and gutters so you know what is safe, what needs repair, and what may need replacement.

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 Guerneville

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.