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GUTTERS

  High-Capacity Guttering for Commercial & Large-Scale Projects

Zensteel® Commercial Half Round Gutter

The Zensteel Commercial Half Round Gutter is engineered for superior water flow, structural strength and long-term durability. Designed specifically for commercial, industrial and architectural applications, it delivers reliable performance in high-rainfall environments while maintaining a clean, timeless profile.

All manufactured onsite in our warehouse, allowing us to provide competitive pricing and top quality.

Heavy-Duty External Bracket System

The Zensteel Commercial Half Round Gutter is supported by a purpose-designed external bracket system, built to handle larger gutter profiles and increased water loads.

  • Manufactured from marine-grade aluminium

  • Engineered for strength and longevity

  • Designed to resist deformation under full load

  • Straightforward installation and alignment

 

WHY ZENSTEEL GUTTERS?

Compatible Accessories

Zensteel offers a complete range of accessories designed to integrate seamlessly with the Commercial Half Round Gutter system:

  • Stop ends (all sizes)

  • Internal and external corners

  • Sculpted nozzles in multiple outlet sizes

  • Round tapered downpipes in various diameters

  • Colour-matched components for a consistent finish every time


High-Capacity Guttering for Commercial & Large-Scale Projects

HALF-ROUND GUTTER OPTIONS

Plain Half Round Gutter
A classic curved gutter profile engineered for efficient rainwater collection and smooth water flow. Its rounded base design reduces debris build–up and promotes self-cleaning with every shower, delivering reliable performance on residential and commercial buildings alike. Designed for compatibility with a full range of half-round rainwater accessories, it’s ideal for clean, modern architectural applications.
 
  • Gutter Diameters (mm): 150 – 500 in 50mm increments
  • Max length: 6m
  • Minimum chargeable length is 2.0m

Half-round sumps custom-formed to suit curved gutter profiles and improve water collection at outlet points. Designed for a neat fit and efficient drainage, they provide a clean transition from gutter to downpipe while maintaining a consistent, professional finish. Half Round Sumps are available in 2 sizes but can also be customised

Heavy-duty stainless-grade A4 brackets for securing half-round gutters with maximum strength and corrosion resistance. Precision-formed for a snug fit, these brackets hold gutter profiles securely to the fascia while allowing for correct fall and water flow. A premium choice for coastal or high-exposure environments.
 
  • Suits Diameters (mm): 150 – 500 in 50mm increments
Engineered for contemporary aesthetics and high water carrying capacity, square gutters deliver robust performance with a clean, angular silhouette. Their straight-lined profile makes them a versatile choice for both modern homes and commercial projects, pairing seamlessly with square downpipes and accessories for a unified rainwater system.
 
  • Max length 8.0m
Designed to support square gutter profiles with precision and strength. These brackets ensure secure fixing to fascia boards while maintaining proper gutter alignment and pitch. Built from coated steel for long-lasting durability in diverse weather conditions.

HALF-ROUND GUTTER ACCESSORIES

Custom Corners-CB Painted

Made-to-measure corner pieces finished in premium colour-bond paint to match your gutter system, these custom corners provide a seamless transition around building edges. Precision-formed for clean lines and superior fitment, they enhance both the appearance and function of your rainwater network.

Precision-formed outlets that connect half-round gutters to downpipes with a neat, weather-tight seal. Designed for smooth water transfer and efficient drainage, these nozzles help maintain optimal gutter performance while preventing overflow or leakage.

Essential end closures for both half-round and square gutters that prevent water exiting the gutter at non-outlet ends. Manufactured from durable steel with corrosion-resistant finishes, they provide a clean, professional stop point and help protect against water damage and leaks.

Precision-cut outlet sections for half-round gutters that allow water to flow into the downpipe system. Designed for easy installation and optimal alignment with downpipes, these outlets maintain the integrity and flow efficiency of your rainwater system.

Structural rainwater conduits available in round and rectangular profiles to coordinate with your gutter system. Manufactured from quality steel and finished for weather resistance, downpipes channel roof water efficiently to ground or stormwater connections. A full range of sizes and accessories ensures seamless integration on any project.

Structural rainwater conduits available in round and rectangular profiles to coordinate with your gutter system. Manufactured from quality steel and finished for weather resistance, downpipes channel roof water efficiently to ground or stormwater connections. A full range of sizes and accessories ensures seamless integration on any project.

Pre-formed angled connectors used to navigate around structural features or changes in building geometry. Mitred offsets allow downpipes to step around obstacles while maintaining a continuous rainwater path. Available in matched finishes to coordinate with gutters and downpipes for a cohesive system.

Pre-formed angled connectors used to navigate around structural features or changes in building geometry. Mitred offsets allow downpipes to step around obstacles while maintaining a continuous rainwater path. Available in matched finishes to coordinate with gutters and downpipes for a cohesive system.

Pre-formed angled connectors used to navigate around structural features or changes in building geometry. Mitred offsets allow downpipes to step around obstacles while maintaining a continuous rainwater path. Available in matched finishes to coordinate with gutters and downpipes for a cohesive system.

ASTRAGALS ROUND W/STAND OFF-BRACKET

Available in Colorbond, Zincalume and Stainless Steel 316

Sizes: 100 | 150 and 225 

ASTRAGALS ROUND STANDARD

Available in Colorbond, Zincalume and Stainless Steel 316

Sizes: 90 | 100 | 150 | 200 | 250 and 300

ASTRAGALS ROUND CUSTOM MADE

Available in Colorbond, Zincalume and Stainless Steel 316

Sizes: 90 | 100 | 150

ASTRAGALS SQUARE STANDARD

Available in Colorbond, Zincalume and Stainless Steel 316

Sizes: 100×100 | 150×150 | 200×200

SELECT YOUR COLOURS

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OPEN COLOUR OPTIONS