Threshold Drainage Systems



No doubt about it – outdoor environments are exposed to the elements. Beyond the beating sun, balconies, patios and other outdoor spaces are exposed to rain, often wind driven, or in copious volumes. Without provisioning for this, water would make its way into adjoining indoor spaces.

There are a number of ways to prevent water ingress, available options including balcony and threshold drainage systems. A relatively new product, threshold drainage offers a number of advantages over traditional measures for this purpose.



Water making its way into indoor spaces is problematic. Besides the risk of accidents, such as slips and falls, long-term pooled water can damage flooring and create crevices and cracks, compromising structural integrity of the space.

To avoid this problem, outdoor spaces were traditionally stepped down into from indoor spaces. This itself is not without problems, stepping down at a doorway increases the risk of trips and falls, as well as presenting a challenging obstacle for the less able-bodied.

In order to meet the provisions of AS1428, step downs are often eliminated. This is where threshold drainage solutions come in.

Threshold drains are a linear drainage system that is installed alongside doors that separate indoor and outdoor spaces. Integrated into a door track itself, threshold drainage systems can be used with any type of door – sliding, bifolding or hinged doors. The beauty of threshold drains is that they both prevent water ingress by draining it away, all the while ensuring a level transition between the two spaces.

All our threshold drainage systems are Australian made, by us, in accordance with Australian standards.

Threshold Grate and Trough by Paige Stainless

At Paige Stainless, we specialise in full custom systems. Our threshold drainage systems are suitable for all sill types, and lengths are supplied as required. 

Fabricated from 304 or 316 grades of stainless steel, our drains are a picture of quality, featuring fully welded end caps and outlets, and a full perimeter bar on the grates.

Our heelguard threshold grates feature wire and gap widths to suit the application, and, as a standard, the trough is a 1.2 mm pressed construction, however other gauge/thickness is available on request.

To learn more about our threshold solutions, contact our helpful team.

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Produced for Architects,
Made for Builders!

No one else has manufactured Heelguard to the Architectural Industry for over 20 years to the Australian Design Standard!

  • 100% Australian Owned.
  • Material selection covering grade 304 & 316.
  • Certification available upon request.
  • Wheelchair compliant AS1428.2 (part 2 clause 9C)
  • Cycle safe AS 3996 (clause 3.3.6)
  • Grates Aligned to Aust / NZ standards for LOAD RATING.
  • Grates aligned to Aust / NZ standards for SLIP RESISTANCE VALUES.
  • ‘Designing for aesthetics and functionality’.
  • Heelguard Stainless Steel Grating and Tray System: [LCARate EcoPOINT 0.48], GreenRate Level A
  • Directly contributing to the Declaration with Global GreenTag International MSD (Modern Slavery Declaration)



ASSDA Accredited

Paige Stainless Fabrications: ASSDA Accredited Ruby Member ASSDA Accreditation is an industry-based scheme designed to establish a benchmark for stainless steel fabricators to become recognised

Modern Slavery Declaration

Modern Slavery Declaration

As part of our progressive Global Greentag certification and in line with the United Nations (SDGs) Sustainable Development Goals which are becoming more important to