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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
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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
Premium Hi-Rib 40 PU Roofing – FAQ
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