Internal drain unblocking

Grease, wipes and foreign objects are common causes; the engineer checks whether the underground drain is also involved.

What this covers

Unblocking sinks, baths, showers, basins and branch waste pipes.

Do this first

• Keep clear of sewage and electrics near standing water.
• Avoid pouring more water into a blocked fitting.
• Note whether upstairs and downstairs drains are affected and photograph any overflow if safe.