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On a project in Holstenkamp in April 2025 a standing-seam roof was delivered with 23 mm seam height. We had ordered 25 mm.
The difference sounds academic. It is not: 25 mm is mandatory from wind-load zone 4. We had the roof dismantled.
Journal
N°07
Detail · 3 min
04 June 2025
The wrong standing seam
Four months on site, two roofers, an edge measurement of 23 mm instead of 25 mm. What we take away.
