Why Do Pitch Fibre Drains Collapse?
Blocked drains are more than just an inconvenience—they’re a potential hazard to both residential and commercial properties. Whether you’re searching for “blocked drains Bournemouth”, “drain unblocking Chichester”, or wondering “how to unblock an outside drain”, understanding the root cause of drainage issues is critical.
A common culprit across properties in Dorset and beyond is ageing pitch fibre drainage pipes. These were widely used from the 1950s to 1970s but now cause persistent blockages and collapses if left untreated. Fortunately, pitch fibre re-rounding services offer an effective solution.
Pitch fibre pipes were considered innovative at the time—lightweight, cheap, and easy to install. However, decades later, they’re showing their weaknesses. Made from wood cellulose and coal tar, these pipes soften over time, distort under pressure, and eventually collapse.
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