Stepped Threshold Drainage

Stepped Threshold Drainage

Our stepped threshold and patio uniflow drainage offers a winning combination of practical functionality and aesthetic appeal. Its efficient water management, safety benefits, easy maintenance, and design versatility make it an ideal choice for various architectural and domestic landscape projects. By seamlessly integrating into the overall design concept, threshold drainage systems enhance the visual appeal of spaces, creating harmonious and aesthetically pleasing environments.

Flexible & Durable

Our meticulously designed threshold drain system combines discreetness and decorative appeal, providing an optimal solution for diverse applications. Its flexible nature allows for effortless adjustments, ensuring seamless integration in any setting.

Experience the convenience of quick and trouble-free installation, enabling you to swiftly finalise your project. To enhance the visual allure, our system offers a splendid assortment of removable top gratings crafted from premium materials, including aluminum, corten steel, and stainless steel. Each option can be further enhanced with a variety of decorative finishes, allowing you to effortlessly harmonise with your surrounding environment.

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Threshold Slim Drain

Deep & Shallow

- 65mm Wide x 100mm Deep
- 65mm Wide x 60mm Shallow
Threshold Slim Drain

Introducing our slimline uniflow threshold, patio drain system, a discreet PVC channel drain solution with stunning removable heel safe gratings. Choose from aluminium, decorative stainless steel, or corten gratings. It offers quick and easy installation, along with flexible and easily adjustable layouts.

Designed for domestic light traffic areas, it has an A15 load class. Available in 1000mm lengths, our system comes with a full range of accessories for each channel with coordinated gully covers, providing a comprehensive drainage solution. Achieve practical functionality and aesthetic appeal with our slimline threshold drain system.

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Threshold Slim+ Drain

Deep & Shallow

- 105mm Wide x 100mm Deep
- 105mm Wide x 50mm Shallow
Threshold Slim Plus Drain

Introducing a wider slimline uniflow threshold, patio drain system that allows rainwater down pipes to be dropped into the drain channel, with greater water capacity. A semi-discreet PVC channel drain solution with stunning removable heel safe gratings. Choose from aluminium, stainless steel gratings. It offers quick and easy installation, along with flexible and easily adjustable layouts.

Designed for domestic light traffic areas, it has an A15 load class where you require greater flow rates. Available in 1000mm lengths, our system comes with a full range of accessories for each channel, with coordinated gully covers, providing a comprehensive drainage solution. Achieve practical functionality and aesthetic appeal with our slimline threshold drain system.

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Threshold Mini Drain

Deep

- 79mm Wide x 79mm Deep
- Slimmer and more robust

Our exciting range of 3 inch threshold channels are slimmer and just as robust as ever. This threshold mini drain acts as a perimeter drain, quickly removing water from hardscapes and directing it away from building structures. It is ideal for residential or non-residential applications that anticipate moderate amounts of drainage water.

They offer a great alternative to our main range allowing narrower drainage solutions to be applied to different areas around your garden or patio. They even come with a whole host of accessories including end caps, coupling, 90 degree elbows and more.

Designed for both domestic light traffic areas (A15 load class) and also B125, a medium-duty load class suitable for areas with light vehicular traffic. True load classes will be related to the particular cover you choose.

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Threshold Stone+ Drain

Deep

- 105mm Wide x 100mm Deep
- Stones not included

Introducing our New French threshold drain system without the usual historic defects, a functional threshold drain for classic or contemporary paved areas. A drain system that allows rainwater down pipes to be dropped into the drain channel, with greater water capacity. A unique concept giving a classic aesthetic look, but with modern water capturing PVC channel. Comes with removable silver or black anodized aluminum covers. Quick and easy installation, along with a flexible and easily adjustable layout.

Designed for domestic areas, A15 load class. Available in 1000mm lengths. Our system comes with a range of accessories, providing another comprehensive drainage solution with both functionality and historic appeal.

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Features & Benefits

  • Our threshold drainage effectively manages water flow, diverting it away from critical areas such as doorways, entrances, and other vulnerable points. By preventing water ingress, it helps maintain the integrity of structures and protects against potential damage caused by water accumulation. A range of connectivity accessories are available to connect spigot outlets to Ø110mm drain systems.

  • The threshold drainage system eliminates the presence of hazardous water pooling, ensuring safe passage for pedestrians and reducing the risk of slip and fall accidents. It offers a level surface adjacent to door thresholds, making it wheelchair-friendly and compliant with accessibility standards.

  • The design of our threshold drainage system facilitates easy maintenance. Debris and contaminants can be easily removed from the surface, preventing clogging and ensuring the system's efficient functioning. This saves time and reduces the need for frequent maintenance interventions.

  • With its ability to seamlessly blend into surrounding hardscape and landscape elements, our threshold drainage contributes to the overall coherence of your application. It can be integrated into gardens, pathways, and outdoor living spaces without detracting from the natural beauty of the environment.

  • Our threshold drain grates can be customised to suit various architectural styles and design preferences. With a wide range of materials, finishes, colours, and grate options available, our threshold systems seamlessly integrate into different environments, from traditional to contemporary.

  • By effectively hiding drainage elements, by the use of our grate styles, materials and colour options, our threshold drain offering ensures visual continuity and uninterrupted aesthetics. It allows designers to create uncluttered and visually pleasing spaces without compromising the drainage functionality.

  • Efficient Water Management

    Our threshold drainage effectively manages water flow, diverting it away from critical areas such as doorways, entrances, and other vulnerable points. By preventing water ingress, it helps maintain the integrity of structures and protects against potential damage caused by water accumulation. A range of connectivity accessories are available to connect spigot outlets to Ø110mm drain systems.

  • Safety and Accessibility

    The threshold drainage system eliminates the presence of hazardous water pooling, ensuring safe passage for pedestrians and reducing the risk of slip and fall accidents. It offers a level surface adjacent to door thresholds, making it wheelchair-friendly and compliant with accessibility standards.

  • Easy Maintenance

    The design of our threshold drainage system facilitates easy maintenance. Debris and contaminants can be easily removed from the surface, preventing clogging and ensuring the system's efficient functioning. This saves time and reduces the need for frequent maintenance interventions.

  • Sleek & Minimal Design

    With its ability to seamlessly blend into surrounding hardscape and landscape elements, our threshold drainage contributes to the overall coherence of your application. It can be integrated into gardens, pathways, and outdoor living spaces without detracting from the natural beauty of the environment.

  • Versatility

    Our threshold drain grates can be customised to suit various architectural styles and design preferences. With a wide range of materials, finishes, colours, and grate options available, our threshold systems seamlessly integrate into different environments, from traditional to contemporary.

  • Visual Continuity

    By effectively hiding drainage elements, by the use of our grate styles, materials and colour options, our threshold drain offering ensures visual continuity and uninterrupted aesthetics. It allows designers to create uncluttered and visually pleasing spaces without compromising the drainage functionality.

Decorative Covers

In addition to our standard aluminium, stainless steel and corten steel cover design for our slimline drains, we proudly offer an array of premium decorative designer covers, crafted from 316 stainless steel for our esteemed threshold, patio slim drain system.

These premium covers have been meticulously designed to not only exhibit exceptional aesthetics but also exemplify the highest standards of functionality. These covers can be personalised to suit individual preferences through a range of captivating finishes, enabling seamless integration into any architectural setting.

Our aesthetically designed and robust decorative 316 stainless steel covers are manufactured from 70% recycled stainless steel and feature a beautiful, brushed finish. 

Threshold Drainage Covers

Matching Gullys

In addition to our designer channel grates, you can complete your drainage installation with one of our beautiful matching gully covers with black plastic gully frame that works with standard underground gully bases.

Available in brushed stainless steel, each of our matching gully covers can be powder coated to any RAL colour or shade, both solid or metallic. Our covers can also be retrofitted into existing standard underground gully bases, including; Hunter, Polypipe, Marley, Brett Martin, Osma etc.

Corner Units & T-Units

For a comprehensive solution, our threshold system offers a complete range of accessories including corner pieces and T-units.

These can also feature our decorative stainless-steel covers as shown here.

Threshold Drainage Corner Units & T-Units

Powder Coating Finishes

Powder coating is surface finish for aluminum and stainless steel grates, that provides almost any RAL colour or shade to be applied, in both solid or metallic colours.

This long-lasting, highly durable finish, will further fine tune the grate to coordinate with your adjacent paving and or door threshold.

Threshold Drainage Finishes
See our full range of stepped Threshold Drainage

Threshold Drainage Misconceptions

Many threshold drains are promoted as universal solutions for all types of door thresholds, but this portrayal is misleading. While marketed as suitable for both stepped and level thresholds, these standard channel drains fall short in effectively managing water drainage, especially for modern door systems with weep holes.

Claims suggesting the suitability of standard channel drains for flush level access requirements are misleading and fail to acknowledge the complexities of drainage needs in relation to building structure. Understanding the limitations of standard drains and opting for specialised dual-flow drainage systems like Aqualevel is crucial for effective water management and preventing structural damage.

Limitations of Standard Channel Drains

Standard channel drains are designed primarily for stepped door thresholds, where the drain cover sits below the threshold level. However, they prove ineffective for capturing water from modern door systems equipped with weep holes intended to allow water to exit. This limitation necessitates the use of a dual-flow drain system like the Aqualevel, which effectively encapsulates the door and drain, ensuring proper drainage without compromising building integrity.

Comprehensive Water Management

The Aqualevel system not only captures water from adjacent paved surfaces but also effectively handles water exiting from door threshold weep holes. Additionally, integration with rainwater pipes enables safe redirection of water away from the building, mitigating the risk of structural water damage.

Misconceptions Regarding Compliance

There’s a misconception that standard drains are compliant with Part M of Building Regulations, which primarily addresses wheelchair access but overlooks specific drainage requirements for door thresholds. This misconception stems from the belief that a 10mm drain slot meets regulatory standards, despite its inefficacy in collecting water from the door threshold itself.

Compatibility Issues and Outdated Methods

It’s essential to recognise that threshold drains are only suitable for stepped threshold details to avoid complications with DPC detailing. Outdated drainage methods intended for flush level thresholds, such as French drains or slot drains, are incompatible with modern metal door profiles and weep hole drainage systems, leading to potential failure.