STRAMIT MONOCLAD®

Home / Products Gallery / Roofing & Wall Cladding / Stramit Monoclad®

SELECTION & SPECIFICATION

APPLICATIONS:

The visual appeal, strength, wide cover, light weight and weather resistance of Stramit Monoclad® cladding make it perfect for all commercial roofing and walling applications. Its excellent strength and ease of assembly allow for long, economical spans.The large water-carrying capacity and weather-tightness permit very low roof pitches, leading to economies in the building structure.

Stramit Monoclad® cladding may also be used for domestic applications.

MATERIALS:

Stramit Monoclad® cladding is manufactured from hi-tensile G550 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 MONOCLAD® CLADDING –
SHEETING MASS (kg/m² of roof area)
	Zincalume®	Colorbond®	Galvanised
0.42mm BMT	4.28	4.35	4.65
0.48mm BMT	4.86	4.93	5.23

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.

ADVERSE CONDITIONS:

Stramit Monoclad® cladding will give excellent durability in almost all locations. It is however important to choose the correct coating for each application environment. The table below shows the suitability of coating types for different exposure conditions.

suitability of coating type	site exposure condition
	benign	moderate	severe	very severe
Zincalume® AZ150		?	?
Galvanised® Z450		?
Colorbond® XRW			?
Colorbond® Ultra	N/A	N/A		?
? Questions marks indicate conditions where durability may be diminished, depending on the particular application

The approximate site exposure conditions in the table above are defined below.

suitability of site exposure condition	distance of site from
	rough	calm,still	industrial	fossil fuel
	active surf	salt water	emission	combustion
benign	1000m +	100m +	500m +	500m +
moderate	400m-1000m	0-100m	250m-500m	250m-500m
severe	100m-400m	N/A	100m-250m	100m-250m
very severe	0-100m	N/A	0-100m	0-100m

The suitability and exposure tables above are guidelines only; conditions will vary from site to site. If in any doubt about the choice of coating for a particular application contact your nearest Stramit office for advice.

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 zinc-aluminium alloy coated steel, colour coated steel and galvanised steel roofs avoid copper, lead, green or treated timber, stainless steel and mortar or concrete.

• In addition galvanised steel roofs should not receive drainage from aluminium or any inert materials, such as plastics, glass, glazed tiles, colour coated and zinc-aluminium alloy. 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)
  
  

• The University of Sydney
  
  

• University of Queensland
  
  

• University of Technology, Sydney

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

ARCHITECTURAL SPECIFICATION :

This specification can be found on the Stramit web site and can be easily downloaded onto your documentation.

The roofing/walling shall be 0.42 (or 0.48) mm BMT Stramit Monoclad® cladding in continuous lengths with trapezoidal ribs approximately 29mm high, spaced at 190mm centres. 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 Standards AS3566, Class 3, shall be used at every rib 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.