Where are you shopping for today?
Delivery State:
What Is a ZINCALUME® Adjustable Downpipe Offset?
A ZINCALUME® adjustable downpipe offset is a precision-engineered fitting that connects a downpipe to your roof gutter system, creating a smooth and watertight path for rainwater flow. This component allows you to adjust the angle or distance between the gutter outlet and the wall of your home, ensuring a perfect alignment no matter how your roof is set out. It’s a vital piece for modern roof plumbing systems where accuracy and corrosion resistance matter.
At Metal Roofing Online, every offset is crafted from genuine BlueScope ZINCALUME® steel for long-lasting protection in Australia’s harsh conditions. The durable metallic coating resists rust and weathering, ensuring years of reliable performance.
Key Features & Benefits
- Compatible with 100 x 50mm downpipes – ideal for residential and light commercial use.
- Adjustable length 360mm–600mm – easily trimmed on site with tin snips or a hacksaw for a perfect fit.
- Made from 100% Australian BlueScope ZINCALUME® steel – unmatched strength, finish, and longevity.
- Corrosion-resistant coating – provides up to four times the protection of galvanised steel in outdoor environments.
- Clean, modern appearance – matches your ZINCALUME® gutters for a seamless roofline.
- Easy to install – lightweight, pre-formed design saves time for roof plumbers and DIY renovators alike.
Why Choose ZINCALUME® Steel?
ZINCALUME® steel is manufactured by BlueScope and trusted across Australia for roofing and rainwater goods. It features a unique aluminium-zinc alloy coating that delivers superior durability and corrosion protection. This makes it ideal for downpipes, gutters, flashings, and roof sheeting where long-term weather exposure is unavoidable.
Using genuine BlueScope steel means you’re getting a product tested to Australian Standards (AS1397 and AS/NZS 2728). Every piece is designed to perform and backed by the BlueScope warranty, giving you peace of mind your installation will last.
Applications and Compatibility
This adjustable offset is suitable for use with:
- ZINCALUME® gutter systems on homes, sheds, and commercial buildings
- COLORBOND® roof drainage systems when matched with compatible fittings
- New builds and re-roofing projects requiring accurate downpipe alignment
Because it’s made from ZINCALUME® steel, it matches the appearance of other roof components such as flashings, downpipes, and fascia systems — helping maintain a consistent finish across your build.
Delivery & Ordering
All ZINCALUME® downpipe offsets are made to order and typically delivered within 5–7 working days. We offer fast and reliable delivery across Victoria, New South Wales, Queensland, Tasmania, and the ACT. Simply select your quantity and add to cart — our team will take care of the rest.
If you’re planning a full roof drainage system, you can also order matching gutters, roof flashings, and downpipe accessories in the same checkout for streamlined shipping.
FAQ – Common Questions
Can I cut the offset shorter?
Yes — simply use a hacksaw or tin snips to reduce the length. The steel is easy to work with while maintaining its structural integrity.
Is this compatible with COLORBOND® gutters?
Yes, provided the sizing matches your gutter profile. ZINCALUME® and COLORBOND® components are both made by BlueScope and can be integrated in mixed systems.
What warranty is included?
All BlueScope ZINCALUME® products are backed by a manufacturer’s performance warranty against corrosion and manufacturing defects when installed according to BlueScope’s recommendations.