Guard rails on decks/roofs: anchorage without sacrificing waterproofing
A guard post can be structurally strong yet become a chronic leak if its anchorage penetrates waterproofing poorly.
Decision triage
VERT / GREEN · JAUNE / YELLOW · ROUGE / RED
What the professional checks
The professional checks guard loads, support, corrosion, penetration, flashing/upstand, drainage and membrane compatibility.
Official sources
Sources checked: 2026-08-24
Related path
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These links connect this page to the next useful checks and decisions without repeating the full content.
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