Owens Corning shingle roof replacement by GAX Roofing
Shingle Roofing

Shingle Roofing in
Rancho Cucamonga

Asphalt shingle installations built for the Inland Empire climate, proper underlayment, ventilation, and ridge cap. Quality materials, no shortcuts.

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✓ C39 Licensed & Insured
◈ Owens Corning & GAF Materials
⌂ Permits & City Inspections Handled
◐ Se Habla Espanol
What We Do

Shingle Roofs Built
to Last

Asphalt shingles are the most popular roofing choice in the Inland Empire, and for good reason. They're durable, cost-effective, available in a wide range of styles and colors, and when installed correctly, they hold up well in Southern California's heat and UV exposure.

The difference between a shingle roof that lasts 15 years and one that lasts 30 comes down to installation. Proper underlayment, correct ventilation, tight flashing, and a quality ridge cap aren't extras, they're the job done right. That's what we do on every install.

What's Included in a Shingle Installation

  • Full tear-off of existing material
  • Deck inspection and repair of damaged sheathing
  • Ice and water shield in valleys and penetrations
  • High-quality synthetic underlayment (Owens Corning ProArmor or equivalent)
  • New drip edge and step flashing
  • Architectural shingle installation, Owens Corning, GAF, or Malarkey
  • Ridge cap shingles, not rolled roofing
  • Pipe boots, vent collars, and flashing properly sealed
  • Permit and city inspection
  • Cleanup and magnet sweep

Materials We Use

We work with Owens Corning, GAF, and Malarkey, three of the most trusted names in roofing. We'll recommend the right product for your home's exposure, your budget, and the look you're going for. Architectural (dimensional) shingles are our standard recommendation, they perform better and look significantly better than 3-tab.

GAX Roofing crew on shingle job Completed shingle roof ridge cap Shingle texture close-up with vent

Why We Do Not Install Three Tab

Three tab is the thin, flat shingle you still see on a lot of older Inland Empire roofs. It is cheaper up front and it is usually what is under a suspiciously low bid. In my experience out here it gives you somewhere around ten to fifteen years, and the way it tends to fail is that the tabs let go.

Three tab shingles blown loose and lying upside down on a roof during a GAX Roofing inspection
An inspection where the tabs had come loose and flipped over. Where they used to sit, the nails are now exposed.

Architectural shingles are heavier, layered, and hold down better under the wind we actually get. That is the product we install. If a bid you are holding says three tab, that is not a small detail, and it is worth asking about before you sign anything.

Frequently Asked Questions

How long do asphalt shingles last in the Inland Empire?

Quality architectural shingles last 25-35 years in the IE climate with proper ventilation. UV exposure and heat accelerate aging, which is why ventilation and underlayment quality matter significantly out here.

How long does a shingle replacement take?

Most residential shingle replacements take 1-2 days. Larger or more complex roofs may take 3. We give you a realistic timeline at the estimate, not a lowball number to win the job.

Can I install new shingles over my existing ones?

Technically yes, but we don't recommend it. A re-roof over existing shingles traps heat, adds weight, and prevents a proper deck inspection. A full tear-off is almost always the better investment.

What color shingles should I choose?

In the IE heat, lighter colors (greys, tans, weathered wood tones) perform better thermally. We can show you samples and help you find something that looks great on your home's specific style and color scheme.

The System

What’s Actually in a GAX Roof

Shingles are just the layer you see. This is the full system that goes on your house, and every piece of it is written into your contract.

Owens Corning roofing system diagram: ridge ventilation to breathe, synthetic underlayment to defend, and an ice and water barrier at the eaves to seal
Breathe, defend, seal: the three jobs the system does together. Diagram courtesy of Owens Corning.
  1. 1
    DecoRidge Caps + VentSureFinished ridge with built-in exhaust ventilation.
  2. 2
    TruDefinition Duration COOLThe 50-year architectural shingle, the only layer you see.
  3. 3
    Drip Edge & FlashingsNew metal edges and flashings, painted to match.
  4. 4
    Starter StripLocks the perimeter course against wind.
  5. 5
    ProArmor Synthetic UnderlaymentMoisture barrier across the entire deck.
  6. 6
    WeatherLock Ice & Water ShieldSelf-sealing membrane in the sensitive areas.
  7. 7
    Roof DeckInspected, damaged wood repaired or replaced.

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shingle estimate?

(909) 819-8394