FAQs

COLORBOND® Coolmax® steel roofing has equivalent corrosion and paint durability performance to COLORBOND® steel, as reflected by the equivalent warranty offer. However, COLORBOND® Coolmax® steel has greater solar reflectance than COLORBOND® steel.

Yes. COLORBOND® Coolmax® steel contains Thermatech® solar reflectance technology which is the same technology that is used in the standard 22 COLORBOND® steel colours.

Prices for COLORBOND® Coolmax® steel are available from BlueScope Steel suppliers. Please see the supplier list for more information.

Appropriate fasteners matched to WhitehavenTM are available in the market. If you require further assistance refer to SteelDirect 1800 022 999.

For roofing applications, BlueScope Steel offers a warranty* against corrosion to perforation by weathering in the natural elements for a period of up to 30 years from the date of installation. BlueScope Steel also warrants* that the paint system on COLORBOND® Coolmax® steel roofing will not flake or peel due to natural weathering for a period of up to 20 years from the date of installation.

^{*Warranty terms and conditions apply. Warranties are not available for all products and applications. The duration and terms and conditions of available warranties vary according to product use and application. Please visit BlueScope Steel Warranties for further information.}

The Building Code of Australia (BCA) has classified roof colour into light and dark on the basis of their solar absorbance. The lighter complying colours qualify for a Deemed to Satisfy insulation concession. The New South Wales Building and Sustainability Index (BASIX) has also classified colour into light medium and dark on the basis of their solar absorbance. The lighter and medium colours have insulation and or roof space ventilation concessions. For more Information see classification of COLORBOND® steel colours for BCA and NSW BASIX. Unpainted metal coated roofs, such as ZINCALUME® steel, have a low thermal emittance so perform differently to conventional painted surfaces (high emittance) from both an energy efficiency basis and impact upon urban heating. For the purpose of BCA and NSW BASIX ZINCALUME® steel should be considered a medium colour (per ASTM E1980)

BlueScope Steel recommend 'cold cutting' coated steel products. If this recommendation is followed, these products will 'self heal', that is, the zinc in the surrounding coating will protect the newly exposed edge. How does this happen? In the presence of moisture, a reaction occurs between the zinc and the steel which results in galvanic protection of the exposed steel, thereby inhibiting corrosion. The degree of protection depends on the thickness of the coating (the amount of zinc), and this is taken into account when Building Standards are formulated.