How a Drain Survey Can Prevent Major Home Repairs
How a drain survey finds cracks, roots and leaks before they cause subsidence, damp or flooding, and when homeowners should book one.
Read articleDrainage Advice & News
Straight answers from the engineers who do the work — what causes blockages, what a repair really involves, and how to avoid the same problem next winter.
Drain Unblocking Cost in London: 2026 Prices and What to Expect
Our 2026 drain unblocking prices for London and Hertfordshire, what affects the final bill, and how to tell if the water company should clear it for free.
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Drain Mapping vs Drain Surveying: Which Do You Need?
Drain mapping shows where your drains run; a CCTV survey shows their condition. How to choose, and when you need both.
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How to Unblock a Drain: Safe DIY Methods and When to Stop
How to tell whether you can clear a blocked sink, toilet or drain yourself, the DIY methods that work, what not to do and when to call a professional.
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Drainage Gradients and Falls: How Much Fall Does a Drain Need?
The gradients household drains need under Approved Document H, how to work out the fall on your drain, and what to do if it is wrong.
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Why Drainage Systems Struggle with Heavy Rain (and How to Protect Your Home)
Why drains overflow in heavy rain, how big the risk is, and practical steps to protect your home before the next storm.
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Why Do ACO Drains Become Blocked? Causes, Cleaning and Prevention
Why ACO channel drains on driveways and patios block, how to clean them yourself, and when to call a drainage engineer.
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How to Identify the Type of Drainage System in Your Property
Most homeowners only ask "What drain is this?" when they are facing a problem. Perhaps you are planning an extension, buying a new house, or you are worried about a recurring blockage.
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Download the Drain 247 Brochure
The 2026 company brochure: the services, the area we cover, and how a visit works. Handy to send on to an architect, a builder or a buyer.