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UNDERGROUND DRAINAGE SUPPLIES

Underground Drainage Supplies for Domestic and Commercial Projects

Build Plumb Plastics supply a complete range of underground drainage supplies for domestic, commercial and civil engineering drainage installations. Our below-ground drainage systems include underground drainage pipe and fittings, inspection chambers, soakaway crates, land drainage pipe, twinwall drainage pipe and surface water drainage products.

All of our underground drainage products are supplied by trusted UK manufacturers including Polypipe, Brett Martin, Naylor, Clark Drain, Pipelife and Fernco. Our drainage systems are manufactured to recognised UK standards including EN 1401-1 and BS 4660, ensuring durability, compatibility and long-term performance.

Underground Drainage Pipe and Fittings

Our range of underground drainage pipe and fittings includes the most commonly used pipe sizes for foul water and surface water drainage systems.

View 110mm Underground Drainage Pipe and Fittings

Our drainage pipe systems are designed for residential drainage installations, commercial drainage systems and civil engineering projects.

Inspection Chambers and Access Systems

Inspection chambers provide essential access points for underground drainage systems. These allow inspection, maintenance and cleaning of foul water and surface water drains.

Browse Inspection Chambers

Soakaway and Attenuation Systems

Soakaway and attenuation systems help manage surface water drainage by storing and slowly releasing rainwater into the surrounding ground or drainage network.

Browse Soakaway Crates
Browse Attenuation Tank Crates

Land Drainage Systems

Land drainage pipe is used to remove excess groundwater from fields, gardens and construction sites. These systems help prevent waterlogging and improve ground stability.

Browse Land Drainage Pipe

Twinwall Drainage Pipe

Twinwall drainage pipe is commonly used for highways, infrastructure projects and large surface water drainage systems due to its strength and durability.

Browse Twinwall Drainage Pipe and Fittings

Why Buy Underground Drainage Supplies from BP Plastics?

  • Large range of underground drainage products
  • Trusted UK drainage manufacturers
  • Suitable for domestic and commercial drainage systems
  • Compatible drainage fittings and accessories available
  • Competitive UK prices with fast nationwide delivery

Browse our full range of underground drainage supplies below to order online from Build Plumb Plastics.

UNDERGROUND DRAINAGE PIPE AND FITTINGSUNDERGROUND DRAINAGE PIPE AND FITTINGSTWIN WALL DRAINAGE PIPE AND FITTINGSTWIN WALL DRAINAGE PIPE AND FITTINGSLAND DRAIN PIPE AND FITTINGSLAND DRAIN PIPE AND FITTINGSSewage Treatment for Off-Mains Drainage SystemsSewage Treatment for Off-Mains Drainage SystemsDRAIN TESTING & CLEARINGDRAIN TESTING & CLEARINGROAD AND YARD GULLIESROAD AND YARD GULLIESCHANNEL DRAINAGECHANNEL DRAINAGEFLEXIBLE RUBBER DRAINAGE ADAPTORSFLEXIBLE RUBBER DRAINAGE ADAPTORSDUCTINGDUCTING
Underground drainage systems are networks of pipes, channels and other components used to manage and move excess rainwater or groundwater away from homes and other buildings. They divert the water to safe locations such as ponds or streams. This helps protect properties from flooding and structural damage due to water accumulation.
Underground drainage systems come in a few different types, the most common being corrugated and PVC slotted subsurface pipes. Mole drainage consists of mole drains, mole drains over collector pipe systems, and gravel mole drains.
Installing an underground drainage pipe is a simple process that requires the right materials and with the help of labor. Begin by digging a trench to accommodate the size of the pipe, then lay a layer of pea shingle (10mm / 20mm) in the bottom of the trench. Place the drainage pipe on top of the pea shingle and fill up both sides and behind with more pea shingle for support. With all these steps complete, your underground drainage should be properly installed!
The minimum size of a drain pipe underground is 4 inches in diameter. The diameter is dependent on the amount of flow needed and the length of the drain pipe.
The best type of pipe for underground drainage is a perforated PVC pipe. This type of pipe is designed with small holes on one side that allow water to enter through the side of the pipe, rather than from the bottom. These pipes are then wrapped in a protective material to prevent corrosion and breakage during installation.