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    What is a French drain?

    Drainage Specialists

    Hi there. May I ask, what is a French drain? What are the pros and cons of these specific drains?

    Asked by Charles on 17th Feb 2022
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    Best Answer

    Cll Contracting

    "Hi, there are different types of French drain but most are basically a trench dug about 1m deep a drainage pipe with slits laid in the bottom and covered with railway stone about 30mm thick to allow water to drain away from an area like a field.
    Pros. Easy to install and cheaper.
    Cons I don't see any"

    Answered on 18th Feb 2022 - Member since Dec 2016 - report
    Kevin Lavelle

    "It’s the old fashioned name for a land drain. Same principals draining land they aren’t any cons really if they are installed properly"

    Answered on 18th Feb 2022 - Member since Nov 2021 - report
    Azura Sky Blue

    "A French drain is a simple soak away trench with an agriculture drain then filled with gravel"

    Answered on 18th Feb 2022 - Member since Jan 2022 - report
    JK Drains

    "A French drain is a storm drain usually fitted as a threshold drain to control surface water in patios/driveways and direct it into either a sewer or a soakaway."

    Answered on 18th Feb 2022 - Member since Oct 2020 - report
    Hawksheadgroundworks

    "A French drain is a trench filled with clean gravel containing a perforated pipe typically 200mm to 600mm deep which diverts surface water ( soggy ground) to a man-made outlet or existing stream or such like."

    Answered on 18th Feb 2022 - Member since Aug 2020 - report

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