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Laying Slabs Against Painted Waterproof Foundations - What Level?

Postby mitchee1967 » Wed Nov 16, 2016 11:14 pm


I'm looking to lay some slabs infront of an extention. The foundation bricks have been painted with a waterproof paint (see attached image).
Do the slabs need to be laid 150mm below the top of these blocks

Thanks in advance.
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Simply Build It

Postby welsh brickie » Fri Nov 18, 2016 6:14 pm

its hard to tell from the pictures, standard height of the slabs is 150mm below your door level, I would leave a 50mm gap from the wall to the slabs, and fill with gravel, this will aid drainage.
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