Roger takes a look at a viewer’s suspended floor problem, where water has been found pooling beneath the bay window.
The likely culprit is surface water around the driveway, a blocked or leaking gully, or a poorly connected channel drain installed when the block paving was done.
Before ripping anything apart, Roger explains how to approach it like a detective: check what has changed, clear the debris, watch what happens in heavy rain, test the drains with a hose, and inspect whether old clay drainage pipes may be cracked and leaking into the foundations.
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🔑 Key Insights
• Water under a suspended timber floor needs investigating quickly, especially if joists show signs of long-term staining or damp.
• If a problem appears after paving or drainage work, always look first at what has changed outside the house.
• Block paving, channel drains and gullies must be properly connected, otherwise surface water can end up against the foundations.
• Old clay or salt-glazed drain pipes can crack and leak underground, allowing water to escape beneath the house.
• A simple hose test, ideally during a dry spell, can help reveal whether a gully or underground pipe is leaking.
• Clear leaves and debris from gullies and channel drains, as overflowing rainwater can cause serious damp problems.
• If the drain is damaged, replacing the faulty section with modern plastic pipe and suitable connectors is usually a straightforward job.
• Before spending big money, do some basic detective work, because the fix may be simpler than it first appears.
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