Your Local Roofer
in Montclair
Montclair's compact residential neighborhoods sit between Ontario and Upland, with a mix of post-war and 1970s-80s housing. GAX Roofing serves Montclair homeowners with tile and shingle replacements, repairs, and free estimates, same licensed crew, same standard as every job we do.
One advantage for Montclair homeowners replacing a tile roof: Eagle Roofing Products has a showroom in Rialto, a short drive from Montclair. Eagle makes some of the best concrete tile available, and their showroom lets you see and handle actual profiles and colors before committing to anything. When we do a tile replacement in this area, Eagle is one of the brands we use most, being able to walk in and pick your material in person makes the whole process a lot easier.
We're a family-owned C39 licensed roofing contractor based in Rancho Cucamonga. Our team handles every estimate and project-manages every job from start to finish. You always have a direct line to us with any question, before, during, or after the work is done. Free in-home estimates. There's a pitch, but we're not going to sit at your house for three hours and grind you down.
Roofing Services in Montclair
- Roof Replacement, full tear-off and install, all roof types
- Roof Repairs, leaks, storm damage, flashing, missing shingles
- Asphalt Shingle Roofing, installations built for SoCal heat
- Tile Roofing, concrete and clay tile, lift-and-relay, repairs
- Flat Roofs, TPO, PVC, EPDM, modified bitumen
- Residential Roofing, full-service, one crew, one point of contact
Why Montclair Homeowners Choose GAX Roofing
- C39 licensed and fully insured, never hire an unlicensed roofer
- Every estimate and every job run by an owner, start to finish
- We pull permits and handle city inspections
- Straight answers, we don't upsell replacements when repairs will do
- 5.0 stars on Google across dozens of reviews
- Bilingual crew, se habla Espanol
- Free in-home estimates, no obligation
Frequently Asked Questions
Yes. GAX Roofing serves Montclair and surrounding areas in San Bernardino County. We come to you for a free in-home estimate, call (909) 819-8394 to schedule.
Yes. GAX Roofing holds a California C39 Roofing Contractor license (#1135657) which covers all of California including Montclair. We're fully insured and pull permits on every job that requires one.
Most residential roof replacements in Southern California range from $11,000 to $20,000+ depending on size, roof type, and condition. We provide a detailed written estimate at no charge after walking the roof with you.
Typically within 1-3 business days. For active leaks or urgent situations call us directly at (909) 819-8394 and we'll do our best to get out sooner.
Before You Reroof in Montclair
The rules and numbers that shape a roof job here, each linked to where it comes from. Sources checked October 2026.
- Permit
- Montclair's Building Division issues building permits and performs construction inspections. Its inspection request line is (909) 625-9448; the city asks for next day requests before 5 p.m. the preceding day and is closed on Fridays. Source: City of Montclair, Building Division
- Energy Code
- The CEC ZIP lookup assigns 91763 to Climate Zone 10; confirm the zone for your address. In this zone, a single family steep slope reroof replacing more than 50% of the roof has a 2025 prescriptive minimum aged solar reflectance of 0.20 and thermal emittance of 0.75, or SRI of 16, subject to listed exceptions. Source: California Energy Commission, 2025 Energy Code 150.2(b)1I Also: CEC, Climate Zone Assignments by ZIP Code Also: CEC, property location and ZIP assignment guidance
- Homes Here
- The 2020 to 2024 ACS estimates Montclair's median year of housing construction at 1969. This describes the buildings, not the age of their current roofs. Source: U.S. Census Bureau, 2020 to 2024 ACS, table B25035
- Local Rule
- Montclair's Building Division says an inspection requested on Thursday is scheduled for Monday because the city is closed on Fridays. Account for that timing when planning work that needs inspection before it is covered. Source: City of Montclair, Building Division inspection instructions