Valley flashing systems — Colorbond steel

BlueScope Colorbond Ultra Valley Iron is the Lysaght/BlueScope standard Colorbond Ultra roll valley iron — the most widely specified and installed valley flashing product in Australia for residential and Class 2 strata building pitched tiled roofs. It is a pre-painted Colorbond steel valley iron factory-formed to the standard valley profile, available in the full standard BlueScope Colorbond colour range. The Colorbond Ultra substrate provides enhanced corrosion resistance compared to standard Colorbond — relevant for coastal and high-humidity environments. As the most widely available and stock-held valley iron product in Australia, lead times are generally short and the product is readily available through roofing trade supply nationally. For colour match on existing roofs, confirm the current Colorbond colour name against the BlueScope colour chart — Colorbond colours are discontinued periodically and an older original colour may no longer be available in new product. Where an exact colour match cannot be achieved with current Colorbond valley iron, the new valley iron may be visually close but not exact — manage client expectations before installation. Valley width, minimum lap at the gutter outlet, and fixing to battens must comply with AS 1562.1 and the tile manufacturer's fixing guide for the specific tile type.

Lysaght Custom-Formed Colorbond Valley is a custom-formed Colorbond steel valley iron fabricated by Lysaght to a non-standard profile or width where the standard Lysaght valley iron profile does not suit the tile profile, valley geometry, or heritage/conservation specification on a specific project. Custom Colorbond valley iron from Lysaght retains the factory Colorbond colour coating from BlueScope Colorbond steel and can be fabricated in the standard Colorbond colour range. Custom fabrication is ordered through Lysaght's fabrication service — a profile drawing or site template is required for accurate fabrication. Lead times for custom-profile valley iron are longer than for standard stocked valley iron — confirm lead time with Lysaght before ordering for time-critical programmes. Custom valley iron is appropriate where a non-standard tile profile, an unusual valley width, or a heritage tile requires a valley profile that cannot be achieved with standard roll-formed valley iron. Confirm the profile requirement with the roofing contractor and the tile manufacturer before ordering from Lysaght.

Stramit Colorbond Valley is Stramit Building Products' pre-formed Colorbond valley iron, providing an alternative source of pre-painted Colorbond valley iron to the Lysaght/BlueScope product. Stramit is an established Australian roofing and building products manufacturer with national trade supply. The Stramit Colorbond Valley is formed from BlueScope Colorbond steel in the standard Colorbond colour range and is available in standard valley widths. It provides a competitive alternative to Lysaght valley iron where Stramit is the preferred supplier or where Stramit stock and lead time suits the programme. Specification and installation requirements are the same as for Lysaght Colorbond valley iron — valley width, minimum lap at the gutter outlet, and fixing to battens must comply with AS 1562.1 and the tile manufacturer's fixing guide. Confirm available colours and standard widths from Stramit Building Products before specifying — confirm that the required colour is current and in stock before ordering.