Pierced-Fix

IBR

The benchmark pierced-fix profile: 686 mm cover, 36.5 mm ribs, 5° minimum pitch.

Pierced-fix
36.5 mm rib
686 mm cover

Overview

Pierced-fix sheeting

IBR is Roofco's workhorse pierced-fix sheeting profile. The 36.5 mm rib height channels water efficiently and delivers structural stiffness across a range of residential, commercial, and light-industrial spans.

Where it's used

Industrial
Commercial
Residential

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Technical specification

Specification

Cover width: 686 mm
Rib height: 36.5 mm
Ribs per sheet: 5
Rib centres: 171 mm
Min. pitch (up to 15 m): 5°
Min. pitch (over 15 m): 7.5°

Material options

Aluzinc AZ100 (0.47 mm)
Aluzinc AZ150 (0.47 – 0.80 mm)
Aluzinc AZ200 (0.47 – 0.80 mm)
Aluminium (0.80 mm)
Zinc (0.50 mm)

Span & drainage data

Span tables

Roof purlin spans

IBR maximum roof purlin spans by gauge
Gauge	Single span	End span	Internal span	Cantilever	Mass kg/m²
0.47 mm	1200 mm	1500 mm	1800 mm	200 mm	4.80
0.50 mm	1300 mm	1600 mm	1900 mm	200 mm	5.11
0.53 mm	1400 mm	1700 mm	2000 mm	250 mm	5.42
0.58 mm	1600 mm	1900 mm	2200 mm	250 mm	5.51

Cladding spans

IBR maximum cladding spans by gauge
Gauge	End span	Internal span	Cantilever
0.47 mm	1600 mm	2000 mm	300 mm
0.50 mm	1800 mm	2200 mm	300 mm
0.53 mm	2000 mm	2400 mm	400 mm
0.58 mm	2300 mm	2700 mm	350 mm

No profile-specific drainage table is published. Confirm with Roofco.

View full tables on Technology

Fixing

Fixed with Surefix™, selected by corrosivity zone. Coastal and heavy-industrial environments (C4 to C5) require Class 4 as a minimum, with 316 stainless considered for the most severe exposure.

Surefix selection guide View Surefix fasteners

Estimator

Size your roof in real numbers.

Sheets, purlins and fasteners: a real bill of materials, not a sheet count. Calculations use a 10% waste allowance (industry default, editable).

Estimate sheets & fasteners

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