Keystone Roofing Co.Roof repair and replacement across San Juan Capistrano, CA.(949) 868-1671Get my price

San Juan Capistrano prices

Pricing a low-slope roof

Flat roofing is priced by the square like everything else, but the cost sits in the details — terminations, drains, and how the membrane meets every wall it touches.

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What is going on with the roof?

Free, and there is no obligation to hire anyone.

Or call (949) 868-1671

No obligation · No cost to you

What is going on with the roof?

Free, and there is no obligation to hire anyone.

Step 1 of 6

What best describes your home?

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

No fee, no obligation, nothing to cancel.

Architectural asphalt shingle$12,000 – $29,500About $675 – $950 a square. Rated life 25 to 30 years.
3-tab asphalt shingle$9,500 – $21,500About $525 – $700 a square. Rated life 15 to 20 years.
Impact-rated asphalt shingle$15,500 – $40,500About $850 – $1,300 a square. Rated life 25 to 35 years.

These are estimated ranges, not quotes. Compiled from public installed-cost data for California and adjusted for how San Juan Capistrano is built. No contractor is bound by them, and nobody can price a roof they have not stood on.

Installed ranges for a 25-square roof in San Juan Capistrano, CA. One square = 100 square feet.
CoveringPer squareTypical whole roofExpected life
Architectural asphalt shingleThe default choice on most American homes, and usually the right one.$675 – $950$12,000 – $29,50025 to 30 years
3-tab asphalt shingleThe cheapest thing that still counts as a roof. Fewer and fewer crews will install it.$525 – $700$9,500 – $21,50015 to 20 years
Impact-rated asphalt shingleClass 4 rated. Often earns an insurance discount where hail is a factor.$850 – $1,300$15,500 – $40,50025 to 35 years

What moves the price

  • How much decking turns out to be soft once the covering is stripped
  • Where you land in the season; crews discount when the phone is quiet
  • Warranty tier, which is really a question about who honours it in fifteen years
  • Permit and inspection fees, which vary more between towns than people expect
  • Pitch — anything over about 7:12 needs staging and slows a crew down

Locally

It is a slow version of the same story they tell on the sand: the roof outlives its own fastenings unless somebody specified for it.

Ask where the water goes and what happens when the drain blocks. On a flat roof that is not a detail, it is the design.

These are estimates, not quotes. They are compiled from national installed ranges adjusted for California costs and for how San Juan Capistrano is built. No contractor is bound by them.

Questions about price

I have solar panels. What happens to them?

They come off and go back on, and that is a separate cost, often handled by the solar installer rather than the roofer. If the roof is near the end of its life, do the roof first — removing and refitting panels twice is money wasted.

Are the contractors licensed and insured?

Contractors have to give us their state licence number and proof of liability and workers compensation cover before they can receive requests. You should still ask to see current certificates yourself before work starts — a licence can lapse between checks.

Is moss on the roof a problem?

Yes, eventually. Moss holds water against the shingle and lifts the edges as it thickens. Zinc or copper strip at the ridge suppresses it. Pressure washing an asphalt roof strips the granules and does more harm than the moss did.

Get the roof looked at

Three questions, about a minute, and up to three San Juan Capistrano contractors come back to you.

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