STRAMIT® CORRUGATED

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SELECTION & SPECIFICATION

APPLICATIONS:

The soft uniformity of Stramit® Corrugated cladding gives it a unique versatility for architectural applications. Still favoured for traditional styled housing, it is also the first choice for contemporary steel-roofed homes.

Stramit® Corrugated cladding is the most readily curved roofing profile either spring-curved or bullnosed.This has helped to make it popular for smaller commercial applications in both roofing and walling.

MATERIALS:

Stramit® Corrugated cladding is manufactured from G300 BlueScope Steel COLORBOND® XRW steel or BlueScope Steel ZINCALUME® steel. In some locations galvanised and Colorbond® Ultra steel may be available by arrangement. Colorbond® XRW (and Ultra) is in accordance with AS2728 – Category 3 and, for the substrate, with AS1397. Zincalume® AZ150 and galvanised Z450 conform to AS1397.

Stramit has a comprehensive range of Colorbond® colours as standard. Refer to the BlueScope Steel Colorbond® 18 colours chart available from Stramit, and ask your nearest Stramit location for colour availability.

STRAMIT® CORRUGATED CLADDING - SHEETING MASS (kg/m2 of roof area)
thickness bmt	grade	Zincalume®	Colorbond®	Galvanised
0.42mm	550MPa	4.28	4.35	4.65
0.48mm	550MPa	4.86	4.93	5.23
0.60mm	300MPa	6.02	6.09	6.39

ADVERSE CONDITIONS:

Stramit® Corrugated cladding will give excellent durability in almost all locations. It is however important to choose the correct coating for each application environment.

suitability of coating type	site exposure condition
	benign	moderate	severe	very severe
Zincalume® AZ150		?	?
Galvanised Z450		?
Colorbond® XRW			?
Colorbond® Ultra	N/A	N/A		?

? Question Marks indicate conditions where durability may be diminished, depending on the particular application. 

COMPATIBILITY:

All building products need to be checked for compatibility with adjacent materials. These checks need to be for both direct contact between materials, and where water runs from one material to another. The following guidelines generally avoid material incompatibility:

• For Zincalume®, Colorbond® XRW and galvanised roofs avoid copper, lead, green or treated timber, stainless steel and mortar or concrete.

• In addition galvanised roofs should not receive drainage from aluminium or any inert materials, such as plastics, glass, glazed tiles, Colorbond® and Zincalume®. Contact Stramit for more detailed information.

TESTING:

Stramit has in-house, purpose built, testing equipment used to design, develop and improve products for the Australian market. In addition many Stramit products are tested or witnessed by independent organisations. These include:

• Cyclone Structural Testing Station (James Cook University)

• University of Queensland

This ongoing research and development activity ensures that Stramit remains at the forefront of innovation, design and consumer information.

ARCHITECTURAL SPECIFICATION:

The roofing/walling shall be 0.42 (or 0.48) mm BMT Stramit® Corrugated cladding in continuous lengths with sinusoidal ribs 16mm high, spaced at 76.2mm centres in accordance with AS1445. Sheeting material shall be protected steel sheet to Australian Standard AS1397, with a minimum yield stress of 550MPa (Grade G550) and an AZ150 zinc-aluminium coating with or without an oven-baked paint film of selected colour. The sheeting shall be fixed to the purlins/girts in accordance with the manufacturer’s recommendations. Suitable fixing screws in accordance with Australian Standard AS3566, Class 3, shall be used at every support with side lap fasteners installed at mid span if required. Sheets shall be laid in such a manner that the approved side lap faces away from the prevailing weather. A minimum of 50mm shall be provided for projection into gutters. Flashings shall be supplied in compatible materials as specified; minimum cover of flashing shall be 150mm. All sheeting shall be fixed in a workman-like manner, leaving the job clean and weathertight. Repair minor blemishes with touch-up paint supplied by the roof manufacturer. All debris (nuts, screws, cuttings, filings etc.) shall be cleaned off daily.

NOTE: G300 Corrugated has a 300MPa steel grade.

Phone: 07 5439 0990
Fax: 07 5439 0770

Address:
26 Beerwah Parade
Beerwah, Sunshine Coast
QLD 4519, Australia

Postal Address:
PO BOX 147,
Mooloolaba, Sunshine Coast
QLD 4557, Australia

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