GR28 Uroll Bond Metal Roofing Profile
GR28 Uroll Bond is a tile-profiled metal roofing sheet that combines the elegant look of clay tiles with the strength and durability of modern steel. It is designed for pitched roofs on residential homes, commercial buildings and light industrial projects across Malaysia.
This guide covers the key specifications, benefits, typical applications and installation guidelines for GR28 Uroll Bond, making it easier for architects, contractors and homeowners in Kuala Lumpur, Selangor, Penang, Johor and beyond to specify the right roofing system.
What is the GR28 Uroll Bond roofing profile?
The GR28 Uroll Bond roofing profile is a roll-formed steel sheet with a contoured, step-tile design. Visually, it resembles traditional roof tiles, but because it comes in long lengths, it dramatically reduces overlaps and installation time.
Each sheet is carefully profiled to create repeating “waves” or modules, producing a neat and uniform finish. The design is suitable for new roofs and re-roofing projects, where a lightweight but visually appealing solution is required.
What are the key specifications of GR28 Uroll Bond?
GR28 Uroll Bond is engineered to provide strong structural performance and efficient roof coverage. The image specification shows a rib height of 35 mm and an overall effective coverage width of 762 mm, with repeating tile modules of approximately 305 mm.
GR28 Uroll Bond technical overview
| Parameter | Value / Description |
|---|---|
| Product name | GR28 Uroll Bond |
| Rib height | 35 mm main rib (with minor ribs for better water flow) |
| Effective coverage width | 762 mm per sheet after side laps |
| Tile module length | Approx. 305 mm per module along the slope |
| Recommended minimum roof pitch | 5° to ensure proper rainwater drainage |
| Profile type | Step-tile metal roofing sheet, suitable for pitched roofs |
Rib height is the vertical distance from valley to crest; higher ribs increase stiffness and help guide rainwater. Effective coverage width is the net width of the sheet that actually covers the roof after overlaps – this is the figure to use when calculating material quantities.
Why choose GR28 Uroll Bond for your roof?
GR28 Uroll Bond roofing provides a balance of style, structural performance and ease of installation. It is a popular choice for Malaysian projects that want the look of tiles without the weight and complexity of individual tile installation.
Main benefits of GR28 Uroll Bond
- Attractive tile appearance: The profile mimics the shape of clay tiles, enhancing curb appeal for homes and commercial buildings.
- Lightweight yet strong: Metal roofing reduces dead load on the structure while the 35 mm ribs provide stiffness.
- Efficient coverage: With 762 mm effective width, fewer sheets are needed to cover large roofs.
- Faster installation: Long sheets mean fewer joints, reducing labour time and potential leak paths.
- Low maintenance: Quality coated metal is resistant to termites, rot and cracking compared to some traditional roofing materials.
How is GR28 Uroll Bond installed?
GR28 Uroll Bond is installed on timber or steel purlins, much like other metal roofing systems. Correct setting out, alignment and fastening are essential to achieve a watertight and visually consistent roof.
Step-by-step installation overview
- Prepare the structure: Ensure rafters and purlins are properly aligned and able to support the roofing load.
- Install underlay and insulation: If specified, lay reflective foil or breathable membranes and thermal insulation.
- Position the first sheet: Start from the eaves on the least visible side of the building, checking squareness and overhang.
- Side-lap and fix the sheets: Overlap sheets according to manufacturer guidelines and fix with self-drilling screws and sealing washers.
- Fit flashings and accessories: Install ridge caps, barge flashings, valleys and other trims to complete the system.
- Inspect and clean: Check screw spacing and alignment, remove metal swarf and ensure water paths are unobstructed.
Is GR28 Uroll Bond suitable for solar panel installation?
Yes, GR28 Uroll Bond can be used together with rooftop solar photovoltaic (PV) systems. The consistent wave profile and rib height make it compatible with many clamp-type or rail-based solar mounting systems.
When planning a solar installation on GR28 Uroll Bond roofs, work with experienced solar contractors who understand the profile and can select suitable brackets, ensure watertight fixings and coordinate cable routing.
Where is GR28 Uroll Bond commonly used?
GR28 Uroll Bond is versatile enough to be used on a wide range of building types, from residential projects to commercial and institutional facilities.
Typical applications
- Landed residential homes such as terraces, semi-Ds and bungalows.
- Shophouses, showrooms and low-rise commercial buildings.
- Schools, colleges, community halls and religious buildings.
- Light industrial units where a “residential” façade appearance is desired.
- Re-roofing of older buildings looking to upgrade from ageing tiles or asbestos roofing.
Whether your project is in Kuala Lumpur, Petaling Jaya, Shah Alam, Penang, Ipoh, Johor Bahru or other regions, the GR28 Uroll Bond profile helps deliver a consistent aesthetic that suits modern Malaysian architecture.
