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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

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    My mum's terraced house built around 1910 with Quarry Tiled existing floor showing small signs of damp.

    The builder has advised my mum it all needs uplifting, concreting and so forth. Whereas I suggest taking up the 10-20yr old concrete path outside which is the same level as the floor and installing a French drain. There is no major sign of any damp...

    My question is, how deep should a French drain be? My suggestion would then be to self level the floor and she wants laminate floor on top. In my house I laid insulation on top of my Quarry tiles then screeded, but her property doesn't quite have as much height to play with...

    Thoughts please
    • CommentAuthortony
    • CommentTimeAug 15th 2017
    French drain good idea, 300mm deep, bottom 150 filled with 40mm stonesdrainit box across door

    I would lay poly 1200 guage under the laminate levelling if needed could be with dry sand with a touch of cement mixed into it.
    • CommentAuthorRick_M
    • CommentTimeAug 16th 2017
    damp all over or on one side/area? Does the path slope into the walls directing water run off? I guess you've already found Fostertom's descriptions of french drains in the forum.
    Pavingexpert is excellent for all sorts of drainage and paving advice.
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