Slimline Surface Drain For Thresholds, Patios & Paved Areas
The Alusthetic Aluminium Threshold Drain is a low-profile, modular drainage system designed for use at entrances, patios, and paved walkways. Its 65mm-wide PVC channel and aluminium heelguard grate (black or silver) provide discreet, effective water management for non-trafficked, domestic areas.
Compact and easy to install for modern landscaping
Designed with self-builders in mind, installation is straightforward: dig a 15cm trench, lay a stabilised sand base (1 part cement to 3 parts sand), and position the drain in place. The bottom outlet requires a 45mm hole to be drilled in the base, or use the integrated side outlet at either end of the channel. Channels can be trimmed to length with a saw, and all joints can be sealed with PVC glue if required.
Backfill around the drain to pavement height, keeping the removable grate in place during installation. End caps, T-pieces, and corner units clip securely into position for a watertight connection. A trap is recommended when connecting to a foul sewer.
- Modular system with 1m channel, corner and T-pieces
- Anodised aluminium grating in black or silver
- Complies with BS EN 1433:2002 (A15) and Part M
- Up to 6m of channel per bottom outlet or 5m per side outlet
- Suitable for thresholds, paved paths, patios and entrances
Features and Benefits
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Discreet 65mm Width
Compact profile blends neatly with paved surfaces.
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Quick, Low-Tech Installation
Lay on a sand/cement mix and connect using standard fittings. No specialist tools needed.
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Flexible Layout Options
Combine straight runs with corners and T-junctions. Channels can be cut to fit.
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Low Maintenance
Heelguard grate removes easily for cleaning and inspection.
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Fully Compliant
Load rated to A15 (15kN) for pedestrian use and Part M building regulation ready.
Technical Specifications
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Channel Length: 1000mm
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Width x Height: 65mm x 100mm
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Grating Colours: Anodised Aluminium (Black / Silver)
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Body Material: Extruded PVC
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Grating Material: Aluminium (Black/Silver)
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Weight: 1.75kg (aluminium)
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Load Class: A15 – BS EN 1433:2002
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Max Flow Rate: 360 L/min
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Regulations: Building Regulations Part M
Available Variants
- Threshold Channel (1m)
- Corner Unit
- T-Piece Connector
Accessories:
FAQs
How do I install this drain?
Excavate a 15cm-deep trench. Lay a 1:3 cement/sand base. Insert the channel and connect outlets. Backfill and level with paving.
What’s the difference between side and bottom outlets?
The side outlet is integrated into the end cap. The bottom outlet requires a 45mm hole drilled in the base. Use standard 50mm or 80mm fittings.
Can I cut the channel to size?
Yes. Trim using a handsaw and file off sharp edges before installing.
How much channel can I connect to one outlet?
Up to 6 metres for a bottom outlet or 5 metres for a side outlet.
Can I connect this to a main sewer?
Yes, just ensure a trap/siphon is used to prevent odours.
