Suitable base

4 Sep 2007
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United Kingdom
Hi, is B&Q's all in one ballast a suitable base for concrete flags? The flagged area is to sit a metal shed on?

Many thanks
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you could use it, but you would normally lay flags on soft sand.

the gravel in the ballast will make getting a flat bed hard. you can also add some cement to the sand to stiffen it up to reduce ants setting up shop.......
No, It doesn't compact at all. You either need mot then compressed grit sand or a bed of mortar although it can be pretty lean, like 8:1

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