3.1 – Roof cladding systems – 3. Transversal joints in the standing seam cladding 185 Types of transversal joints and slopes necessary for cladding that resists heavy rain Type Overlap Required pitch slope Pitch slope with secondary waterproofing ref. chap. 2.1.8 and 2.1.11 Expansion Staggered joint with parallel upstand ≥ 100 mm ≥ 7° (12.3%) ≥ 3° (5.2%) very good Staggered joint with wedge ≥ 100 mm ≥ 10° (17.6%) ≥ 10° (17.6%) reduced Transversal joint with tin-plated hooking strip and draining filament mat inserted in the overlap ≥ 240 mm ≥ 10° (17.6%) ≥ 5° (8.7%) good ≥ 170 mm ≥ 20° (36.4%) ≥ 20° (36.4%) good Simple transversal joint 50 mm ≥ 30° (57.7%) ≥ 20° (36.4%) reduced Double standing seam transversal joint and waterproofing with self-expanding tape 30 mm ≥ 7° (12.3%) ≥ 3° (5.2%) not possible EXCERPT
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