An L-foot rail system fixed to a trapezoidal metal deck roof — the penetrating counterpart to seam clamping.
- Roof: trapezoidal metal deck
- Attachment: L-feet through the deck crown into structure
When you fix through the deck
Not every metal roof has a clampable seam. On trapezoidal deck, L-feet fix through the sheet crown with a sealing washer at each point — which makes the screw and its EPDM washer part of the waterproofing system. Our L-feet are SGS pull-out tested (SR-LM ≈6.1 kN average). See L-feet, the roof-screw selection guide, and metal roof systems.
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