Klip-Lok roofing profile
Klip-Lok is Lysaght's concealed-clip standing-seam steel roofing profile: 41 mm rib, 1 degree minimum pitch, the premium low-pitch contemporary choice.
Ask Chalkline about this →Klip-Lok is Lysaght’s concealed-clip standing-seam steel roofing profile, designed for low-pitch and contemporary architectural roofs where no visible fastener heads are wanted on the finished surface. The sheet has a vertical rib that clips over a concealed plastic or steel clip screwed to the support; the next sheet snaps over the same clip. No screws penetrate the upper surface of the pan.
Variants
| Profile | Rib height | Cover width | Minimum pitch |
|---|---|---|---|
| Klip-Lok 406 | 41 mm | 406 mm | 1 degree (1 in 50) |
| Klip-Lok Classic 700 | ~41 mm (fluted pan) | 700 mm | 1 degree at 0.48 BMT, 2 degrees at 0.42 BMT |
Klip-Lok Classic 700 has longitudinal fluting along the pan that improves stiffness on the wider cover width. Verified 2026-05-16 from Lysaght Klip-Lok 406 brochure and Lysaght professionals product page.
When it’s used
- Low-pitch roofs below 5 degrees where pierce-fix profiles (Trimdek, Custom Orb) need to be steepened to maintain weather resistance.
- Contemporary architectural designs where the standing-seam look is the design intent.
- Long sheet runs where pierce-fix penetration count would create high failure risk.
- Wall cladding for a clean concealed-fix aesthetic.
Trade-offs vs pierce-fix profiles
| Driver | Klip-Lok advantage | Pierce-fix advantage |
|---|---|---|
| Sheet cost | More expensive (15-25% premium typical) | Cheaper per m² |
| Install time | Slower (clip placement) | Faster (direct screw) |
| Penetration count | None on pan | One every batten |
| Low-pitch capability | 1 degree | 2-5 degrees typical |
| Aesthetic (contemporary) | Cleaner | Visible fasteners |
On-site checks
- Clips correctly aligned with stud or purlin centres before fitting.
- Sheet pan free of foot traffic damage; light walking only on the rib, never on the pan.
- Underside of overlaps free of swarf; metal shavings between pan and clip will corrode.
- Compatible flashing details (Lysaght or matched colour/material) for ridges, valleys, and side laps.
Also known as: KLIP-LOK, Lysaght Klip-Lok, Klip-Lok 406, Klip-Lok Classic 700.
Category: Metal roofing / cladding profiles.
Related
See also
Last updated: 2026-05-16. Verified: 2026-05-16.