A corrosion-graded clamp mounting on a standing-seam roof in the Philippines, where coast and humidity set the material spec.
- Roof: standing-seam metal
- Location: Philippines — coastal, C5 corrosivity
Why the coast changes the clamp
Much of the Philippines sits in C4–C5 corrosivity, so a seam clamp there is not just a mechanical choice but a materials one: anodized AL6005-T5 bodies and A2-70 (or A4 where chlorides demand) stainless hardware. How we match protection to a coastal site is set out in our Corrosion Protection Guide. See metal roof systems and our Southeast Asia work.
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