Christmas Delivery Update

Estimated deliveries are now 6th/7th January 2026

Underground Drainage

Our FloPlast underground drainage pipes, hoppers, and gullies are made from top-grade uPVC for high durability and resistance to underground stress. Backed by a 10-year guarantee, these plain-ended or socketed pipes ensure long-lasting performance

Our FloPlast underground drainage pipes, hoppers, and gullies are made from top-grade uPVC for durability and resistance to underground stress. Backed by a 10-year guarantee, these products ensure long-lasting performance, whether plain-ended or socketed.
We recognise that each project has unique needs, which is why our drainage systems offer flexibility with various lengths and fittings. Our pipes come in 3m and 6m lengths and are designed to integrate seamlessly with different components, ensuring a perfect fit for any underground setup.
GAP’s underground drainage products are easy to install with their lightweight uPVC construction, which reduces labor time and costs. Compatible with standard 110mm systems, the FloPlast range ensures a quick and hassle-free setup.

Underground Pipe Plain Ended

Underground Pipe Single Socket

Underground Universal Waste Adptr (32/40/50mm)

Underground Universal Rainwater Adptr (Sq/Rd)

Underground Supersleve Clay Adptr DS (Black)

Underground Square Hopper inc Polypropylene Grid

Underground Spare Square Grid

Underground Socket Plug

Underground Round Hopper and Grid

Underground Square Hopper inc Polypropylene Grid

Underground Rectangular Hopper inc Polypropylene Grid

Underground Universal Rainwater Adptr (Sq/Rd)

Underground Pipe Single Socket 6m

Underground Pipe Single Socket 3m

Underground Pipe Plain Ended 6m

Underground Pipe Plain Ended 3m

Underground Pipe Coupling Single Socket

Underground Pipe Coupling Double Socket

Underground Long Radius Bend 87.5 Plain End

Underground Long Radius Bend 87.5 PE with Channel Access

Underground Long Radius Bend 45 PE with Channel Access

Underground Hepsleve Clay Adptr DS (Black)

Underground Flexi-coupling 98-115mm

Underground Flexi-Adptr 120-136mm

Underground Drain Connector (Grey/Black)

Underground Cast Iron Cover & Plastic Frame

Underground Bottle Gully Rectangular Grid

Underground Bottle Gully Circular Grid

Underground Back Inlet Bottle Gully Rectangular Grid

Underground Back Inlet Bottle Gully Circular Grid

Underground Bottle Gully Rectangular Grid

Underground 87.5 Equal Junction Triple Socket

Underground 87.5 Equal Junction Double Socket

Underground 87.5 Double Socket Settlement Rest Bend

Underground 87.5 Double Socket Rest Bend

Underground 800gm Lubticant Gel

Underground 80 x 110mm Adptr

Underground 450mm Plastic Cover & Frame with 350mm Restricted Access

Underground 450mm Plastic Cover & Frame

Underground 45 Universal Gully Trap

Underground 45 Single Socket Bend

Underground 45 Equal Junction Double Socket

Underground 45 Equal Junction Double Socket

Underground 45 Double Socket Bend

Underground 340mm Sealed Screw Down Cover

Underground 30 Single Socket Bend

Underground 30 Double Socket Bend

Underground 270mm Deep Multi Inlet Chamber Base (Allows 0-20 of Movement)

Underground 270mm Deep Chamber Base (Allows 0-20 of Movement)

Underground 270mm Deep Chamber Base

Underground 270mm 90 Inlet Chamber Base (Allows 0-20 Movement)

Underground 270mm 45 Inlet Chamber Base (Allows 0-20 of Movement)

Underground 270mm 45 Inlet Chamber Base

Underground 235mm Extension Riser

Underground 200mm Riser

Underground 200mm Chamber Riser

Underground 160 x 110mm Level Invert Socket/Spigot

Underground 15 Single Socket Bend

Underground 15 Double Socket Bend

Underground 100mm Chamber Riser

Underground 0-90 Double Socket Adjust Bend

Galvanised Channel Drain Garage Pack (3 x 1m inc end cap and outlet)

DrainGuard

Drain Corner Galvanised Grate

110mm Drainage Channel Galvanised Grate

110mm Domestic Channel Drainage Garage Pack (3 x 1m inc end cap and outlet)

110mm Domestic Channel Drainage End Outlet

110mm Domestic Channel Drainage End Cap

110mm Drainage Channel Galvanised Grate

110mm Domestic Channel Drainage 1m Length (Inc Grate)