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Roof Repair in San Dimas, CA | Shingle, Tile & Metal Roof Repair

Pomona Superior Roofing provides expert roof repair in San Dimas, CA, backed by over 20 years of experience repairing shingle, tile, and metal roofing systems. Our team quickly identifies visible and hidden roof damage, then delivers targeted repairs that protect your home and prevent leaks from spreading. We provide reliable workmanship and durable solutions built for long-term performance. San Dimas, CA sits along the foothills of the San Gabriel Mountains, about 28 miles east of downtown Los Angeles. The area's warm-summer Mediterranean climate, classified as Köppen Csb, exposes roofs to intense Southern California sun, canyon winds, and seasonal weather. We provide roofing solutions designed for these local conditions and proudly serve nearby La Verne, CA and Glendora, CA.

Our roofing contractors guide you through common warning signs and explain whether repair or replacement is the better option. We handle every stage of the project, from emergency roof repairs to complete roof restoration, with clear communication and dependable service. With thousands of homes throughout San Dimas, we deliver roof repairs that protect your property and extend your roof's lifespan.

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Why We Are the Leading Commercial Roofer in Pomona, CA & Surrounding Areas

  • Holder of a C-39 roofing contractor license with over 28 years of experience
  • Completed major commercial roofing projects valued at over $3.7 million
  • Factory-trained and certified by leading manufacturers such as GAF, Carlisle SynTec, Firestone, Johns Manville, and CertainTeed
  • Expertise in installing and servicing TPO, PVC, EPDM, Modified Bitumen, BUR, etc.
  • Certified for energy-efficient and reflective roofing systems
  • Specialized in roof replacements, retrofits, coatings, and energy-efficient upgrades,
  • Skilled in infrared moisture scanning, leak detection, and preventive commercial roof maintenance
  • Rescued numerous unfinished commercial roofing projects abandoned by other contractors lacking proper roof engineering knowledge
  • Financially stable, ensuring projects are completed on time without delays
  • Offering industry-leading warranties, including a 50-year Golden Pledge Warranty on shingle roofs and 30-year warranties on commercial flat roofs
  • No-dollar-limit warranty guaranteeing full roof replacement if the roof fails


Signs You Need Roof Repair or Replacement

We inspect roofs for leaks, missing materials, and structural wear that affect safety and waterproofing. Because San Dimas, CA features everything from historic mid-century properties near old U.S. Route 66 to newer developments near the Frank G. Bonelli Regional Park, understanding your specific material's limitations is key.

Common Roof Damage Indicators

We watch for water stains on ceilings, blistering or peeling paint in attic spaces, and active drips after our intense winter rainstorms. These signs point to compromised underlayment or flashing failures that require timely roof repair to prevent mold and structural rot.

Exterior clues include curled, cracked, or missing shingles and granule loss in gutters. For tile roofing—which is incredibly popular across the city's master-planned neighborhoods—look for broken, displaced, or sunken tiles and mortar decay at ridgelines. On metal roofs, check for rust, loose fasteners, and raised seams that allow water intrusion.

Other indicators include sagging rooflines, consistent daylight through roof decking, and increased energy bills from lost insulation effectiveness during blazing summer months. If we spot more than a few of these issues across your property, replacement planning becomes prudent to restore long-term waterproofing and structural integrity.

When to Call a Roofing Contractor

With over 72% of homes in San Dimas, CA being owner-occupied, staying ahead of major structural damage is one of the best ways local homeowners protect their equity. Call a licensed roofing contractor when you see active leaks, repeated patching needs, or storm damage affecting more than isolated shingles or tiles. We recommend immediate inspection after heavy foothill winds, hail events, or fallen tree limbs to properly document damage for insurance and safety.

Schedule a professional roof inspection if your roof is over 20 years old, shows widespread granule loss, or exhibits multiple failing components. A qualified roofing company will use drone imaging, moisture scanning, or a rigorous 30-point assessment to identify hidden problems and accurately estimate repair versus replacement costs.

Urgent calls include structural sagging, electrical hazards from water contact, and interior ceilings collapsing. For non-urgent but persistent issues—such as recurring leaks or deteriorating flashing along Arrow Highway or San Dimas Avenue properties—we still advise contacting a roofer early to avoid escalating repair costs.

Assessing Shingle, Tile, and Metal Roof Issues


  • Shingle roofs: Inspect for cracked, cupped, or missing shingles and check gutters for heavy granule buildup. We closely evaluate flashings around chimneys, vents, and valleys; failed flashings often cause leaks despite intact shingles.

  • Tile roofing: Look for cracked, slipped, or broken tiles and check the underlying waterproof membrane when tiles are loose. We pay close attention to valley areas and ridge caps where mortar can fail over time; small tile repairs can prevent large underlayment replacement if caught early.

  • Metal roofing: Examine for corrosion, split seams, and missing or loose fasteners. We test for "oil-canning" (visible waviness) that signals panel movement from temperature swings and check seals at penetrations and roof transitions. For all roof types, we document damage, estimate life expectancy, and recommend targeted roof repairs or full reroofing based on safety, cost, and remaining service life.

Types of Roofing Services Available in San Dimas, CA

We perform targeted repairs, durable replacements, and preventative treatments for the common architectural styles found throughout San Dimas, CA. Our work emphasizes long-term weather resistance, correct flashing, and material-appropriate techniques.

Shingle Roof Repairs and Replacement

We inspect asphalt shingle roofs for torn, curled, or missing shingles and for granule loss that exposes the underlying fiberglass mat. For small leaks, we replace affected shingles, reset flashing around chimneys and vents, and seal valleys to stop water intrusion completely.

When shingles are aged (characterized by curled edges, widespread granule loss, or multiple active leaks), we recommend a full replacement with modern architectural or 3‑tab shingles matched to local wind and high-UV exposure ratings. Our replacement process includes an underlayment upgrade, an ice-and-water shield in vulnerable valley areas, ridge ventilation checks, and proper nail patterns designed to meet strict manufacturer warranties. We provide clear estimates comparing spot repair versus full replacement, including expected service life and warranty options.

Tile Roofing Solutions

We handle concrete and clay tile roofs, focusing first on identifying cracked, slipped, or broken tiles and on locating underlayment deterioration caused by decades of heat.

For repairs, we replace individual tiles, reset displaced wood battens, and reseal flashings around roof penetrations to prevent localized leakage. When underlayment or widespread cracking appears across an older home, we recommend reroofing with new heavyweight felt or advanced synthetic underlayment beneath either matching tiles or a completely different roofing system, depending on your budget and structural capacity. We carefully address weight concerns, handle ridge and hip tile re-bedding, and use compatible fasteners and mortar to preserve tile integrity and maintain proper roof drainage patterns.

Metal Roofing Repairs

We service standing seam, corrugated, and metal shingle roofs, prioritizing seam integrity, fastener condition, and specialized panel coatings. Common repairs include re-sealing seams, replacing deteriorated fasteners and rubber washers, patching punctures, and treating early surface corrosion before it spreads.

For through‑fastened metal roofs, we inspect and replace failed washers and use neoprene-compatible sealants to restore absolute watertightness. If panels are extensively corroded or warped, we propose partial or full replacement using coated steel or aluminum with the appropriate gauge and finish to resist both mountain-foothill humidity and urban smog corrosion.

Benefits of Roof Coating

We apply advanced roof coatings to extend service life, reduce minor leaks, and significantly improve energy performance on compatible roofs.

  • Substrate Bonding: Coatings bond seamlessly to asphalt, metal, and some single‑ply surfaces to seal hairline cracks and protect substrates from UV breakdown.

  • Temperature Control: Reflective coatings lower roof surface temperatures dramatically, which reduces attic heat gain and decreases summer cooling loads for homes in San Dimas, CA — a massive benefit when summer temperatures regularly climb.

  • Application Prep: We select coatings based on substrate compatibility, anticipated foot traffic, and warranty needs. We thoroughly prep surfaces (including pressure washing, priming, and rust treatment) to ensure proper adhesion and long-term performance.



Roof Repair Process and What to Expect

We inspect your roof thoroughly, provide a clear written estimate with a timeline, and back our work with warranties and quality checks. Expect transparent communication, documented findings, and options for repair or full replacement when needed.

Inspection and Diagnosis

We start with a safety-first roof inspection that covers shingles, tiles, metal panels, flashings, gutters, and attic conditions. We use ladders and walk the roof when safe; for fragile clay tile or steep metal roofs, we complete a visual and drone-assisted survey to avoid further structural damage.

During inspection, we look for missing or loose shingles, cracked tiles, rusted or loose metal seams, failed flashing, and signs of water entry in the attic such as stains, mold, or damp insulation. We document each defect with photos and annotated notes, assign a severity level, and identify whether a targeted roof repair can stop the issue or a new roof is advisable. This diagnosis forms the basis for the written estimate.

Detailed Estimates and Project Timeline

We deliver a written estimate that itemizes labor, materials (shingles, tiles, TPO or standing seam metal components), permit costs, disposal fees, and any recommended upgrades like underlayment or ice-and-water shields.

The estimate includes start and completion dates, daily work hours, and contingency allowances for hidden damage discovered after tear-off. We explain payment terms, insurance-claim assistance when applicable, and options between repair versus new roof replacement. If you approve, we schedule the crew, order materials, and confirm access and debris-drop locations. We update you promptly on any weather-related delays or scope changes.

Warranty and Quality Assurance

We provide a clear warranty that covers our workmanship and list manufacturer warranties for installed roofing materials. Warranties include start date, duration, and what is excluded—such as damage from subsequent severe storms or improper homeowner modifications.

Quality assurance involves a post-repair inspection by our supervisor, photographic documentation of completed work, and a final walkthrough with you to confirm satisfaction. We keep maintenance recommendations on file and offer routine inspection plans to extend the life of your roof and protect any investment in a new roof or roof repairs.