Double lock standing seam

{
  "id": "MLC-T-IND-001802",
  "term": "Double lock standing seam",
  "field": "Industrial and trades",
  "definition": "A type of metal roof seam where two adjacent panels are joined by folding their upturned edges over twice, creating a watertight and mechanically fastened connection. This interlocking method forms a raised, narrow rib that stands above the roof surface, allowing for thermal movement of the metal panels. It provides superior weather resistance and durability compared to single lock seams.",
  "subject": "Construction",
  "translations": {
    "de": "doppelte stehende Naht",
    "es": "junta alzada de doble engatillado",
    "fr": "joint debout à double agrafure"
  },
  "url": "https://mlchart.com/terminology/industrial/double-lock-standing-seam/"
}