Premium Hi-Rib 40 PU Roofing

Ledex Premium™ Hi-Rib 40 PU Roofing is made of high tensile steel with a 40mm deep trapezoidal profile. It is designed for low roof pitch applications (as low as 1° pitch) and provides a water-resistant insulated roofing system processed using high density close-cell polyurethane.

Low pitch performance: able to fix down to roof of 1° pitch (application guidance in catalogue).
Larger span, fewer fasteners: premium profile design helps reduce installation time.
Water-resistant & insulated: PU core improves thermal and acoustic comfort.
Concealed concept: lapping & screws are concealed using clip cover (same roof colour) for seamless finish.
Durable handling: harder to be damaged during transportation and offers good sound absorption.

Premium insulated roofing profile with concealed fixing concept

Premium Hi-Rib 40 PU Roofing combines high tensile steel facings with a rigid PU core to deliver thermal insulation, water resistance, and long-term durability. The concealed concept helps protect fasteners from corrosion and reduces the likelihood of leaks.

Designed for faster installation and long-term durability

The Premium Hi-Rib profile is engineered to allow larger span and reduce the number of fasteners, helping to reduce installation time. Concealed fixing helps minimise leakage risk and maintenance.

Larger span: premium profile supports wider purlin spacing (refer to catalogue span tables).
Leakage prevention concept: concealed screws reduce exposure to corrosion.
Durable handling: reduced risk of damage during transport.

Where can it apply

Common applications listed for Premium Hi-Rib 40 PU Roofing include:

Factory / Industrial roof
Commercial & industrial buildings
Institution buildings
Agriculture mega buildings
Facility roof extensions
Low pitch residential

Specifications

Hi-Rib 40 Profile (effective width 740mm)

Product Specification (Hi-Rib 40)

Key Dimensions

Effective width: 740 mm
Depth of rib: 40 mm
Minimum roof pitch: 1° (sheet without end lap)
Tolerance: Length ±3 mm, Width ±5 mm, Metal ±0.03 mm, PU ±2 mm

Material & Finishing

Steel grade: Zincalume G300 / Zincalume G550
Outer finishing: Zacs / Zacs Cool / Zacs Natural / Prima Maju / Zincalume / Vermoe / Colorbond
PU core: Rigid Polyurethane (PU) – close cell
PU thickness options: 25 mm / 50 mm / 60 mm (PU Metal variant)

Insulation Properties (PU Metal)

Insulation grade: Non CFC, Non HCFC
Type: Rigid PUR / PIR
K value: 0.024 w/mk
U value: 25mm: 0.96 w/m²k; 50mm: 0.48 w/m²k; 60mm: 0.40 w/m²k
R value: 25mm: 1.04; 50mm: 2.08; 60mm: 2.50