Cornerstone Roofing of MontclairMontclair’s shortcut to three honest roofing quotes.(909) 752-8730What it costs

Montclair, CA

Flat roofs do not shed water. They hold it back.

Almost every flat roof problem is a drainage problem wearing a disguise. Standing water finds the one seam that was not welded properly.

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Describe the flat roofing job

Three questions, then the address. Up to three Montclair contractors who do this work.

Or call (909) 752-8730

Free estimate · No obligation

Describe the flat roofing job

Three questions, then the address. Up to three Montclair contractors who do this work.

Step 1 of 6

What best describes your home?

Different buildings need different crews, so this is the first thing a roofer asks.

Free. You are not committing to anything.

Before you let anybody on the roof

The things worth pinning down on a flat roofing job. A contractor who has not raised them has not looked properly.

  • How the flat section is flashed into adjoining walls and pitched roofs
  • Whether water ponds anywhere after rain
  • Whether a coating is being sold as a repair
  • Which membrane, and how the seams are joined
  • Drain, scupper and overflow provision

Coatings can buy a sound roof several years. Coating a failed roof buys you a wet roof with a fresh top coat on it.

Ponding water is the enemy. Anything still sitting there forty-eight hours after rain is a design problem, and tapered insulation is usually the answer.

Single-ply membranes — TPO, PVC, EPDM — are heat-welded or taped at the seams. The seams and the terminations are the whole job.

Locally

The second problem is ember intrusion through vents and open eaves. Most houses lost to wildfire are lost to embers arriving ahead of the fire, not to the fire itself.

About flat roofing here

How much deposit is normal?

A third at most, and never the full amount. Pay the balance when the job is finished and you have walked it. Some states cap the deposit by law.

Do I have to hire anyone?

Not at all. Plenty of people use this to find out what a job costs and then do nothing for a year. That is a perfectly reasonable outcome.

Do I need a permit?

Yes, in nearly every jurisdiction a re-roof is permitted work. A contractor who suggests skipping it is telling you something useful about how they work.

Are you a roofing company?

No, and it matters that we say so. We are a referral service, not a contractor. The roofing work, the licence, the insurance and the warranty all sit with the independent company you choose.

Get the roof looked at

Three questions, about a minute, and up to three Montclair contractors come back to you.

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