LYSAGHT® Downpipes

Product Description and Features

To complete its range of rainwater goods, BlueScope Steel has a wide range of downpipes. They are available in ZINCALUME® steel and a wide range of COLORBOND® prepainted steel colours.

Designed for greater durability, longer life and compatibility with steel and tile roofs
Manufactured from light, strong, high tensile steel
Fast and easy to install
Available in a choice of square, rectangular or round designs that match LYSAGHT® gutter and fascia profiles perfectly
Compliments the LYSAGHT® roofing and walling profiles.

Note:

Rainwater run off from roofing materials such as ZINCALUME® steel or COLORBOND® prepainted steel, aluminium or glazed tile surfaces should NOT be drained into a plain galvanised gutter or downpipe
Where possible, downpipes should be spaced at no more that 12 metre centres
The protective plastic film should be stripped off immediately on installation
It is important gutters slope towards the outlets (a minimum gutter fall of 1 in 500 is recommended). Without this, slope 'ponding' may occur, reducing the life of your gutter
When installing gutters, remove any metal particles or debris at the end of the day to prevent staining and corrosion
Read our Guidelines for using COLORBOND® steel & ZINCALUME® steel.

Where to buy
FAQs
Design
Availability
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How many LYSAGHT® Downpipes do I need to use on a house?

Roof Drainage System Design

Roof drainage systems should be designed and detailed by a suitably qualified trade or professional in accordance with the BCA and the Australian Standards. Particular reference should be made to the correct sizing of gutter; quantity and placement of downpipes; and the provision of appropriate overflow devices. View information on Design of Drainage and Gutter Fall:

Downpipe Design

The downpipe size and spacing should be determined in accordance with AS/NZ3500.3.2:1998 National plumbing and drainage: Part 3.2: Stormwater drainage - Acceptable solutions.

Fall

Install gutters with a suitable fall to avoid ponding and to allow water to easily flow away. Steeper falls are preferred for prolonged life of the gutter. Refer to the BCA and the Australian Standards for guidance.

Availability

Square & Rectangular Downpipes and Accessories
Download LYSAGHT® Product Catalogue Extract Square & Rectangular Downpipes (87 KB)

Round Downpipes and Accessories
Download LYSAGHT® Product Catalogue Extract Round Downpipes (99 KB)

Colour Range

LYSAGHT® Downpipe and accessories are available in ZINCALUME® steel, COLORBOND® steel, and COLORBOND® steel high gloss colours. View the COLORBOND® steel colours. For high gloss colour availability please contact your local supplier.

FAQs

How many LYSAGHT® Downpipes do I need to use on a house?

The number of downpipes required depends on the design and layout of the gutters. To calculate the capacity you need to refer to our information on how to Install LYSAGHT® Steel Roofing & Walling, "Chapter 6, Roof Drainage". This will give the formula to calculate the volume of water. Placement of the downpipes should be kept to a maximum of 10 metres apart for residential applications. Larger industrial gutters can space to a maximum of 18 metres.

Design

Roof Drainage System Design

Downpipe Design

The downpipe size and spacing should be determined in accordance with AS/NZ3500.3.2:1998 National plumbing and drainage: Part 3.2: Stormwater drainage - Acceptable solutions.