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Drainage glossary · Blockages and their causes

Detergent scum

A soft build-up formed when soaps and detergents react with hard water minerals and cling to pipe walls. It provides an adhesive surface for hair, fat and fibres.

What it means for you

More detergent does not clear it. Volume of hot water flushing through the run does far more.

Not sure whether this applies to your property? Ask us. There is no call-out charge and the price is fixed before any work starts.

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