Deck preparation and underlayment first, then edge and valley flashing, then panels run from eave to ridge and fixed either through the face or on concealed clips. Closures, penetration flashing and ridge cap finish it. The sequence is the same across profiles; the fixing method is what changes.
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The fixing method drives almost everything else.
| Exposed fastener | Concealed fastener | |
|---|---|---|
| Fixing | Screws through the face | Clips or flanges under the panel |
| Thermal movement | Pinned at each screw | Panels free to move |
| Install speed | Faster | Slower, more setting out |
| Maintenance | Washers checked and replaced | Little |
| Skill required | Moderate | Higher |
the complete metal roofing guide covers the standing seam case in full.
Four things that are worth checking regardless of profile.
That last one leaves permanent rust spotting if ignored, and it is the most common way a new panel roof is spoiled on day one. the full cost picture covers pricing.
On agricultural buildings commonly yes. On houses a solid deck with underlayment performs better and is usually specified.
At a plant, or on site from coil with a portable roll former, which avoids any horizontal joint on a residential run.
Any ribbed or corrugated profile does, since the shape leaves gaps at eave and ridge for wind driven rain and pests.
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