Blocked Drains in Merton

Merton drainage covers SW19, SW20, CR4, and SM4, taking in Wimbledon, Mitcham, Morden, Colliers Wood, Raynes Park, Wimbledon Park, and Merton Park. The borough's drainage stock is suburban: Edwardian 150 mm vitrified clay mains under the Wimbledon Village conservation streets, 1930s 100 mm laterals across Raynes Park and Morden, Victorian 100 mm terraces in Colliers Wood, and post-war 150 mm shared estate mains across Mitcham. Target arrival is 30 to 60 minutes across all four postcodes.

Wimbledon Village conservation area needs period-appropriate Class B covers and concealed reinstatement, with cast-iron finish to match the original Edwardian streetscape. Our crews dispatch with the Harben P30 4000 PSI jetting trailer for mainline clearance, a 90 m CCTV crawler with depth-logging for survey work, Sewerin acoustic location for buried laterals, and Picote cutter heads for root intrusion at clay joints. Drain unblock priced at our flat half-hour labour rate, with no callout fee (see /pricing), CCTV survey with depth-logged report from £350.

Thames Water and SES Water both serve the borough, splitting roughly along the District line, and the hard supply leaves heavy scale in older copper waste runs feeding 100 mm cast-iron soil stacks. Larger family-house heating spec across SW20 means longer lateral runs through bigger gardens, and Merton callouts often start with Sewerin acoustic location before any rodding begins because the original deed plans rarely match the buried route.

CIPP cured-in-place lining to BS EN ISO 11296-4 from £500 per metre (3 m minimum run) is our standard repair across the SW19 Wimbledon Village conservation streets where excavation would breach the planning conditions. We line clay sections in situ, run a post-cure CCTV survey to verify the new bore, and reinstate to match the original finish. The River Wandle culverted under Colliers Wood and Mitcham adds a surface-water dimension; backflow preventers as standard on basement gullies for lower-ground installations within 200 m of the watercourse. Air admittance valves fitted on internal soil-stack reroutes where conservation rules block external vent terminations.