Roof sheeting · 5 Rib
5 Rib roof sheeting (Trimdek-style): profile dimensions and prices
Wide flat pans and square ribs for a crisp, contemporary roof or wall. Rolled to order in your lengths in COLORBOND® Standard, Matt and Ultra, ZINCALUME® and galvanised steel.
- Rolled to order
- Ready in two business days
- Pick up or delivery
Profile dimensions
5 Rib (Trimdek-style) dimensions at a glance.
A 5 Rib (Trimdek-style) sheet covers 762 mm of roof width, with ribs 29 mm high spaced 190.5 mm apart. Each rib is 60 mm wide at the base and 23.5 mm across the top, leaving a 130 mm flat pan between ribs.
| Effective cover width | 762 mm (± 2 mm) |
|---|---|
| Rib height | 29 mm |
| Rib spacing (centre to centre) | 190.5 mm |
| Rib width at top | 23.5 mm |
| Rib width at base | 60 mm |
| Pan width between ribs | 130 mm |
| Base metal thickness (BMT) | 0.42 mm or 0.48 mm COLORBOND®; 0.42 mm ZINCALUME® and galvanised |
| Minimum roof pitch | 5° (approximately 1 in 12) |
| Lengths | Cut to any length up to 10,000 mm per sheet. We deliver sheets up to 8,000 mm; delivery of longer sheets is quoted separately before dispatch. |
| Finishes | COLORBOND® Standard, Matt and Ultra; ZINCALUME®; galvanised |
Where it works
Roofs, walls and everything between.
- Residential roofs
- Patios and carports
- Sheds and farm buildings
- Wall cladding and fencing
5 Rib is the profile most people picture when they think of a modern metal roof: broad flat pans with evenly spaced square ribs. The pans read cleanly from the street, and the 29 mm ribs carry water efficiently on long runs.
It is an equivalent profile to Lysaght Trimdek®, supplied by Roofing Depot on the Gold Coast, so it suits flashings, fasteners and accessories designed for that shape. Flashings are made to match in the same colour in our own factory.
Need matching trims? Draw a flashing and get an instant price, or add gutter and fascia in the same colour.
Configure and order
Choose a colour, enter your lengths, see the price.
5 Rib (Trimdek-style) is selected for you. Enter each sheet length, or use the By area tab to work out the sheets from your building size.
Lengths and quantities
Enter each sheet length in millimetres. Delivered sheets are limited to 8,000 mm; delivery of longer sheets is quoted separately and is an additional cost.
Not sure of your lengths? Switch to and enter the shape of your roof or wall.
Live quote
5 Rib Sheets (similar to Trimdek), Colorbond Standard
0.42mm · Surfmist
Cut to your exact lengths · ready within two business days
Trimdek® and Spandek® are trade marks of Lysaght. Our 5 Rib and 9 Rib sheets are equivalent profiles supplied by Roofing Depot and are not manufactured by Lysaght. COLORBOND® and ZINCALUME® are registered trade marks of BlueScope Steel Limited.
Common questions
5 Rib (Trimdek-style): common questions.
What are the dimensions of a Trimdek-style 5 Rib sheet?
Cover width 762 mm, rib height 29 mm, rib spacing 190.5 mm centre to centre, rib top 23.5 mm, rib base 60 mm and a 130 mm pan between ribs. Sheets are cut to any length up to 10,000 mm.
How many 5 Rib sheets do I need?
Measure the roof along the gutter line in millimetres and divide by 762, then round up to the next whole sheet. For example, a 6,000 mm wide roof needs 6,000 ÷ 762 = 7.9, so 8 sheets. The configurator on this page does the calculation for you in the By area tab.
Is your 5 Rib the same as Trimdek?
It is an equivalent profile with the same cover and rib spacing, supplied by Roofing Depot. Trimdek® is a trade mark of Lysaght; our sheets are not manufactured by Lysaght.
Which thickness should I choose?
0.42 mm BMT is the standard for houses, patios and sheds. 0.48 mm is stiffer and suits longer spans, commercial work and roofs with regular foot traffic.
How long does it take?
5 Rib is rolled to order and is normally ready within two business days of your order being confirmed. Collect from Coombabah or have it delivered; freight is quoted for your suburb before dispatch.
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