A roof made of long metal panels that run from ridge to eave and lock together at raised vertical seams. The fasteners sit on concealed clips beneath those seams, so nothing passes through the exposed surface of the roof. That is the whole idea, and everything else about the system follows from it.
Get Metal Roof Cost Guide connects you with licensed local companies. We are not a roofing contractor and do not perform the work ourselves.
Because every fastener driven through a roof is a hole, and every hole depends on a washer or sealant to stay watertight. Those are consumable parts sitting in sunlight and weather.
On a screw down roof they are the recurring maintenance item and the usual first failure. Standing seam removes that category entirely, which is most of why it costs more and most of why it lasts longer. what drives a metal roof quote covers the price difference.
More than the panels you can see.
how metal roofing is installed walks through how it is put together.
It is the longest lasting common residential system and the lowest maintenance, which is why it costs the most. Whether it is best depends on the building.
Commonly 40 to 70 years, with metal, coating, installation quality and climate deciding where in that range you land.
Carefully, and where the manufacturer says. Careless traffic dents pans and distorts seams.
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