Standing seam or stone-coated steel: what does a metal roof cost in the East Bay?

What's the difference between standing seam and stone-coated steel?

Two systems cover most residential metal roofs. Standing-seam panels run from eave to ridge with concealed fasteners and raised interlocking seams. Stone-coated steel uses smaller pressed-steel panels finished with stone granules to look like shake, tile or shingles.

How does metal compare with asphalt on price?

Up front, metal is the expensive choice: the Cost vs. Value report shows the metal reroof well ahead of asphalt for the same defined job. Standing seam tends to cost more than stone-coated steel. Instead of a price per square, here is what changes the bid.

What changes the price of a metal roof?

• Roof shape: hips, valleys and dormers mean more cutting and trim
• Pitch: standing seam needs a minimum slope set by the panel maker
• Tear-off and decking: old layers off, and the sheathing the panel system calls for
• Gauge, metal and finish: thicker panels, aluminum and premium coatings cost more
• Solar and penetrations: vents, skylights and panels to work around

How long does it last, and is it fire-rated?

Longevity is the case for metal: InterNACHI puts it at 40 to 80 years against 20 to 30 for asphalt shingles. On fire, the Safer from Wildfires program counts metal shingles or sheets among the roofs that qualify as Class A.

Does a metal roof in the East Bay have to be a cool roof?

Bayside cities such as Oakland, Berkeley and Fremont are in climate zone 3 with no prescriptive cool-roof rule, while Walnut Creek, Concord, Pleasanton and Livermore are in climate zone 12, where a qualifying steep-slope reroof needs a rated cool-roof product unless an exception applies. See the CEC compliance manual.

What matters locally?

In the Oakland and Berkeley hills, metal is usually a wildfire decision: the area burned in 1991, Berkeley adopted a Wildland-Urban Interface code chapter in 2025, and a Class A assembly is the baseline in fire hazard zones. Inland, the question shifts to heat and the climate zone 12 cool-roof rule, which metal panels can meet with a rated light-colored or reflective finish. Hill homes with stairs and narrow streets add labor, especially for long standing-seam panels.

What should be on a metal-roof bid?

On each estimate, look for the exact panel system, panel thickness, coating type, underlayment, Class A assembly and the length of the workmanship and finish warranties. Our quote checker covers the rest. For your actual price, request a free written estimate: a licensed roofer measures the roof and prices your exact scope.

Related: what drives roof replacement cost, roof size estimator, Class A roofs.