Cornerstone Roof ProsStorm damage, leaks, full replacements — handled locally.(626) 990-2952Free estimate

West Covina, CA

Fix the leak before it costs you a ceiling

The expensive part of a roof leak is almost never the roof. It is the insulation, the drywall and the framing that got wet on the way to the ceiling stain.

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Describe the repair job

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

Or call (626) 990-2952

Free · Takes about a minute

Describe the repair job

Three questions, then the address. Up to three West Covina 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.

No cost to you. Contractors pay us, you do not.

Before you let anybody on the roof

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

  • Where the water is actually getting in, not just where it is showing up
  • What the repair does to any remaining manufacturer warranty
  • Whether the surrounding material has enough life left to be worth tying into
  • What it would cost to replace instead, so you can compare like for like
  • Whether matching material is still available in your colour

The usual culprits, in order: flashing at a wall or chimney, a cracked pipe boot, a valley that was never lined properly, and a nail that backed out. Actual holes in the field of the roof are uncommon.

Expect the contractor to want to look before quoting. Anybody willing to price a leak repair over the phone is guessing, and the guess will be high.

Ask directly: how much life is left in the covering? A contractor who will give you a straight number, and say why, is worth more than one who is cheapest.

Locally

Behind it: wind-blown embers landing in the valleys. Class A assemblies and closed-off vents matter more here than the colour of the shingle.

About repair here

How many contractors will contact me?

No more than three. We picked that number because two quotes is not enough to spot an outlier and five is an ordeal.

Can I just put a new roof over the old one?

Codes in most places allow two layers. That does not make it wise. You lose the chance to see the deck, and the next roofer has twice as much to remove.

What happens to my information?

Your details are passed to up to three local roofing contractors so they can quote. That is the only use. You can ask us to delete them at any time, and there is a do-not-sell page for exactly that.

How quickly will someone call?

Usually within the hour during working hours. If you marked the job as an emergency it goes to the front of the queue and is normally picked up faster than that.

Start with a free estimate

No cost, no obligation, and never more than three contractors.

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