Both are metal, but they're built very differently.
| Standing seam | 5V crimp | |
|---|---|---|
| Fasteners | Concealed clips | Exposed screws |
| Lifespan | 40–60 years | 30–45 years |
| Maintenance | Minimal | Screws and washers need checking |
| Cost | Higher | Lower |
| Wind | Best | Good when screwed to spec |
Standing seam for a lifetime roof with minimal maintenance; 5V for a budget metal roof on cottages, barns and porches.
Usually from screw washers drying out and loosening over time — standing seam avoids this by hiding fasteners.