Roof repair by GAX Roofing
Roof Repairs

Roof Repairs in
Rancho Cucamonga

Leaks, missing shingles, storm damage, flashing failures, diagnosed fast, fixed right. We don't upsell a replacement when a repair will do.

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What We Do

Fast, Honest
Roof Repairs

Not every roofing problem requires a full replacement. A good contractor tells you when a repair is the right call, and that's what we do. We walk the roof, show you exactly what we found, and give you honest options. If a repair buys you 5-10 more years, we'll tell you. If the damage is too widespread and a replacement makes more financial sense, we'll tell you that too.

We've seen everything from minor shingle damage after windstorms to severely rotted decking from years of undetected leaks. Whatever the issue, we diagnose it accurately and fix it properly, not just the symptom, but the cause.

Common Repairs We Handle

  • Active roof leaks, located with an infrared thermal imaging camera and sealed at the source
  • Missing, cracked, or curling shingles
  • Storm and wind damage
  • Flashing failures around chimneys, vents, and skylights
  • Pipe boot and vent collar replacements
  • Damaged or rotted decking (partial replacement)
  • Ridge cap repairs
  • Solar panel-related roof damage
  • Tile cracks, slips, or broken sections
  • Flat roof membrane punctures and seam failures

Chimneys get their own page, because they are the most common leak we see on a roof that otherwise looks fine: chimney flashing repair.

How We Find the Leak: Thermal Imaging

The drip in your ceiling is almost never where the water gets in. It travels along rafters and underlayment and shows up ten feet from the actual hole, which is why repairs aimed at the stain fail so often. On repair calls we bring an infrared thermal imaging camera and run an infrared leak survey: wet material reads colder than dry material, so hidden moisture shows up on screen. Then we go into the attic and confirm it: the same spot from below, wet marks on the wood. From there we trace the wet path back to the real entry point. The repair goes there, at the source, documented with photos you keep.

A ceiling that looks clean beside its thermal frame showing a cold mass of wet material during an Inland Empire roof leak inspection

Here is the full walkthrough of how thermal leak detection works, with real frames from a Fontana repair call. Already paid someone for a repair that did not hold? Read this before paying twice.

What a Tile Leak Repair Looks Like Underneath

A repair in Corona, January 2026. The roof looked fine from the driveway. It always does. The tile was intact and sitting where it should be, which is exactly why people are surprised when we tell them the roof is leaking.

Failed underlayment exposed after lifting tile at a leak repair in Corona, CA
Tile lifted. The underlayment underneath has split open along the transition, which is where the water was getting in.

Once the tile came up, the story was easy to read. Then we pulled the failed material and got down to the deck, and the deck told us how long it had been going on.

Water staining on bare roof decking exposed during a tile leak repair in Corona, CA, with new Titanium UDL50 underlayment going down
Bare deck with the water staining still on it, and the new underlayment starting to go down over it. The stain is the leak path, written on the wood.

That dark mark is why we do not guess from the ground. A stain like that tells us where water actually traveled, and it usually starts somewhere other than where the homeowner sees the drip inside. We confirm it from the attic when we can, then we open the roof at the source rather than around the symptom.

Repair or Replace?

This is the most important question in roofing, and the honest answer depends on your specific roof. Generally, repairs make sense when damage is localized, the roof is under 15-18 years old, and the underlying structure is sound. Replacement becomes the better value when repairs are recurring, widespread, or when the cost of fixing it approaches a meaningful fraction of a new roof.

We'll show you the math either way. And if the answer is replacement, you're already talking to the right contractor, roof replacement is our bread and butter.

A Section Repair, Not a Patch: Huntington Beach

Huntington Beach, September 2026, flat concrete tile. The repair was the lower front section over the patio. A patch covers one spot. Doing the section means the tile comes off and gets stacked, the deck gets cleared, and the new underlayment runs the whole section, wall to eave, with nothing old left in the middle of it. Then the same tile goes back on and nobody can tell from the street.

Aerial view of a roof repair in Huntington Beach, CA: flat concrete tile lifted and stacked on the lower front section, new Spyder PSU self-adhered underlayment down, GAX Roofing truck in the driveway
The lower front section opened up. Tile stacked on the right, new self-adhered underlayment (Spyder PSU) across the deck, crew relaying from the top down.
GAX Roofing crew relaying flat concrete tile over new self-adhered underlayment on the lower front roof section of a Huntington Beach home
The same tile going back over the new membrane. When the tile is still good, this is the honest repair: new waterproofing under the armor you already have.

Frequently Asked Questions

How quickly can you get out for a repair?

For active leaks we prioritize scheduling. In most cases we can get out for an estimate within 1-2 business days and schedule the repair shortly after.

Do repairs require permits?

Minor repairs typically don't require permits. More significant structural repairs, like replacing large sections of decking, may require one. We'll let you know upfront.

My roof is leaking right now, what should I do?

Place a bucket, protect what you can inside, and call us. Document the leak with photos if possible. Don't attempt to get on the roof yourself, call (909) 819-8394 and we'll get someone out.

Will a repair void my roof warranty?

Repairs done by an unlicensed contractor can void manufacturer warranties. As a C39 licensed contractor, our work maintains your warranty eligibility. We can review your warranty documentation if needed.

Roof leaking? Call
today for a free look.

(909) 819-8394