Santa Rosa Based, Serving Sonoma County 
(707) 540-2592 
Mon-Fri: 7AM–5PM | Sat: 8AM–2PM
Santa Rosa's Roofing Contractor for Over 20 Years
Mario Contreras started this company on a straightforward principle — do honest work, show up when you say you will, and stand behind every job. Over 20 years later, that is still how Mario Contreras Roofing operates in Santa Rosa and across Sonoma County.
Whether the job is a roof repair, a full roof replacement, or a roof inspection, Mario brings the same level of care and accountability to every project. No subcontractors, no runaround — just dependable roofing work from a contractor who takes the finished product personally.
- 20+ Years roofing homes and businesses in Santa Rosa and Sonoma County.
- Lic. Fully licensed and insured in California. Every job is covered.
- ES/EN Bilingual service in English and Spanish for all of Santa Rosa.
The Kind of Roofing Contractor Santa Rosa Homeowners Can Count On
Roofing is one of the biggest investments a homeowner makes. Mario Contreras Roofing is built around making that investment feel worth it — with honest guidance, clean work, and a process that respects your time and your property.
Honest Guidance
Mario tells you what your roof actually needs — not what generates the biggest invoice. If a repair will solve the problem, he will say so. If you need a full replacement, he will explain why clearly and without pressure.
Careful Workmanship
From tear-off and deck prep to final flashing and cleanup, we pay attention to every step. Santa Rosa roofs deal with hot dry summers and heavy winter rain — the details matter if the work is going to hold up.
Respect for Your Property
We protect your home while we work, keep the job site organized, and do a full cleanup before we leave. You should not have to deal with leftover debris or damage to your yard when the job is done.
A Simple Process That Keeps Every Roofing Project on Track
Most roofing problems in Santa Rosa come down to one of three things — deferred maintenance, poor original installation, or weather damage from the wet season. Whatever the cause, the fix starts with a clear-eyed look at what is actually going on.
We keep the process simple and transparent so you always know what is happening and why. Whether you need a composition shingle roof, tile roofing, metal roofing, or flat roof work, the approach is the same.
- 01 Inspect and Evaluate
We get on the roof, look at the full picture, and explain what we find in plain terms. No vague assessments, no manufactured urgency — just an honest read on the condition and what it needs.
- 02 Give You a Clear Estimate
We walk you through the scope of work and the cost before anything starts. Free estimates, no obligation. If you have questions about materials or timing, we answer them straight.
- 03 Complete the Work with Care
We show up on time, work cleanly, and finish the job properly. When we leave, your roof is protected and your property is clean. That is the standard on every job from Santa Rosa to Petaluma.
Roofing Contractor Serving All of Sonoma County
Based in Santa Rosa, Mario Contreras Roofing serves homeowners and business owners throughout Sonoma County. Wherever you are in the county, we bring the same honest work and dependable service.
Protect Your Home With Reliable Roofing Services