Kliplock K400 PU 2-rib roofing panel
Three-layer roofing panel with a concealed-fix interlock - 42 mm Ω rib, 400 mm effective width
Kliplock K400 PU 2-rib roofing panel
Three-layer Kliplock K400 roofing panel, 400 mm effective width, 42 mm Ω rib, PU core at 38 ± 3 kg/m³, core 10 – 60 mm thick, with a concealed-fix interlock.
42 mm Ω rib with a wide foot that resists overtopping
Concealed-fix interlock - no screw-hole leaks
High stiffness, saving on purlins and installation labour
Rolled on site, panels up to 65 m long
Product overview
The Kliplock K400 is a three-layer 2-rib roofing panel: a steel top skin, a PU insulation core and an underside lining. Adjacent panels join with a klip-lock interlock, so there are almost no screws through the roof surface — it removes the screw-hole leaks you get with conventionally fixed sheet.
The Ω-shaped rib is 42 mm high with a wide rib foot: the panel is more stable, carries heavier loads, is quieter in rain and resists water overtopping the rib. At the purlin line the rib carries a channel that houses the fixings, so water never pools around a screw.
The 400 mm effective width (450 mm product width) suits steeper roofs or where a narrower rib spacing is wanted. Panels are made to the roof bay length within transport limits (up to 33 m); where longer panels are needed, Phu Son brings a mobile line to site and rolls them there — up to 65 m, or as the design requires.
The panel is designed to EU standard BS EN 14509:2013 and works as roofing or wall cladding for factories, warehouses, offices, resorts, farms and swiftlet houses — including projects close to the sea.
Key advantages
42 mm Ω rib, overtopping-resistant
The 42 mm Ω-shaped rib with its wide foot makes the panel more stable, quieter under rain, able to carry heavier loads and highly resistant to water overtopping the rib.
No screw-hole leaks
Panels join with the Kliplock interlock, and at the purlin line the rib carries a channel that houses the fixings — so the roof surface is left with almost no screws through it.
Acoustic and thermal insulation
A PU core at 38 ± 3 kg/m³, 10 – 60 mm thick, foamed continuously on a closed line. The three-layer twin-steel build has a 0.30 – 0.45 mm bottom skin that adds service life, a better finish and fire performance.
Stiff panels, fast installation
The panel is stiff and easy to handle, saving on purlins and installation labour. It ships in bundles 1 – 1.2 m high for easy lifting and delivery.
Panels up to 65 m, rolled on site
Where a project needs panels beyond transportable length (over 33 m), Phu Son brings a mobile line to site and rolls them there — up to 65 m, or as the design requires.
Technical specifications
| First layer | 2-rib steel sheet, 0.35 – 0.50 mm thick — Az50 / 100 / 150 galvanised, pre-painted |
|---|---|
| Second layer | PU with a density of 38 ± 3 kg/m³ — Insulation core |
| Third layer | PP / Alufim / plain steel sheet, 0.30 – 0.45 mm thick — Underside lining |
| PU core thickness | 10, 15, 20, 25, 30, 40, 50, 60 mm |
| Effective width / product width | 400 / 450 mm — Tolerance ±3 / ±5 mm |
| Rib height | 42 mm — Two Ω ribs per panel, overtopping-resistant |
| Maximum length | Within transportable limits (33 m) — Longer runs: rolled on site, up to 65 m |
| Design standard | EU BS EN 14509:2013 |
| Standard steel colors | Red, blue, moss green, jade green, milky white, cream yellow — Per the catalogue color chart |
2-rib steel top skinAz50 / 100 / 150 galvanised, pre-painted steel 0.35 – 0.50 mm thick, formed into two 42 mm Ω ribs with the Kliplock interlock. A stainless version is available up to 0.50 mm.
PU insulation corePolyurethane at 38 ± 3 kg/m³, 10 – 60 mm thick, foamed continuously on a closed production line.
Underside liningPP, Alufim foil or plain steel 0.30 – 0.45 mm thick.
Standard steel color chart
- Red Red
- Blue Blue
- Moss green Moss green
- Jade green Turquoise
- Milky white White
- Cream yellow Ivory
- Wood grain Wood grain
Beyond the standard chart, Phu Son will produce to a project's own color code on large orders.
In use on site
Industrial factory buildings
Long roof bays with fewer joints
Large-span warehouses and factories
Heat- and leak-resistant roofing
Specifications & options
- Three-layer build-up: 2-rib steel 0.35 – 0.50 mm / PU 38 ± 3 kg/m³ / PP - Alufim - plain steel 0.30 – 0.45 mm
- PU core thickness: 10, 15, 20, 25, 30, 40, 50, 60 mm
- Effective width 400 mm - product width 450 mm
- Rib height: 42 mm, two ribs per panel
- Length: to the roof bay, within transport limits (33 m); rolled on site up to 65 m
- Design standard: EU BS EN 14509:2013
- Standard colors: red, blue, moss green, jade green, milky white, cream yellow
- Accessories: ridge cap, edge gutter, valley gutter, internal and external corner trims, water stop
- Source: Phu Son Group 2026 Catalogue - panelphuson.vn
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