Our Below Ground Drainage range is designed to help you install reliable underground drainage systems for managing waste and surface water effectively. Whether you’re working on a new build, extension, landscaping project or repair job, quality below ground drainage products support safe water movement and help prevent issues such as pooling, blockages and ground saturation.
Below ground drainage is commonly used for connecting soil pipes, waste outlets and rainwater systems into a secure underground network, directing water away from buildings and outdoor areas. Using the correct pipework, fittings and connectors ensures a watertight installation and reduces the risk of future maintenance problems. With durable materials made to perform in ground conditions, these systems are built for long-term use in both domestic and commercial settings.
For best results, plan the drainage route carefully, ensure the correct fall for steady flow, and use compatible fittings throughout the system. Proper bedding and backfilling also helps protect pipework and maintain stability over time. Whether you’re replacing a damaged section or installing a complete run, having the right components makes the job quicker and more reliable.
Shop online today for below ground drainage supplies with convenient ordering and delivery available.
The Brett Martin Rainwater 68mm Round Downpipe 110mm Universal Adaptor (Pipe) Rubber is a durable PVCu rainwater adaptor designed for reliable roof drainage and efficient downpipe system installation.
The Brett Martin Rainwater 68mm Round Downpipe 110mm Universal Adaptor (Socket) Rubber is a durable PVCu rainwater adaptor designed for reliable roof drainage and efficient downpipe system installation.
The Brett Martin Rainwater 68mm Round Downpipe 110mm x 68mm Rainwater Pipe Adaptor Black is a durable PVCu rainwater adaptor designed for reliable roof drainage and efficient downpipe system installation.
The Brett Martin Silicone Lubricant Spray 400ml is a convenient spray lubricant designed to aid assembly and maintenance of plastic drainage components, seals and moving parts (application dependent). It provides quick, clean application to reduce friction and improve ease of fitting.
Brett Martin Solvent Cement 125ml is a fast-acting adhesive designed for creating strong, permanent joints in compatible solvent-weld waste and drainage systems. Ideal for installers and maintenance work, it supports reliable bonding for clean, watertight connections.
The Brett Martin Spare Rectangular Hopper and Grid is a replacement top assembly for compatible hopper and gully units, designed to restore surface water entry and improve the finished appearance. Ideal for maintenance and refurbishment of external drainage points.
The Brett Martin Spare Round Hopper and Grid is a replacement top assembly designed to refresh or repair compatible hopper and gully installations. Featuring a durable round grid, it helps restore effective surface water intake and a neat finished appearance.
The Brett Martin Spare Square Hopper and Grid is a replacement top assembly for compatible drainage hoppers and gullies, designed to reinstate surface water entry and provide a clean, finished appearance. Ideal for repairs and routine maintenance.
The Brett Martin Square Hopper (160mm with 110mm Inlet) is a surface water collection hopper designed to accept rainwater and discharge into 110mm drainage pipework. Its square top format provides a neat finish for patios, paving and external drainage points.
The Brett Martin StormCrate55 Crate (4 crates per m³) including 4 clips is a high-strength modular attenuation crate designed for stormwater management and soakaway systems. Lightweight and quick to assemble, it supports efficient water storage, infiltration and SuDS-compliant drainage designs (project dependent).
