The fall of a drain along its length, expressed as a ratio such as 1 in 40. Too little and solids settle; too much and water runs away from the solids, leaving them behind.
What it means for you
Gradient is decided when a drain is laid and is expensive to correct afterwards, so it is worth getting right first time.
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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