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I have a four inch concrete 'slab' to lay on top of a DPM sheet (that sits on 10mm of sand).
My local Wickes sells 'Ballast' (an all-in aggregate) - will this give my floor the strength it needs at a ratio of 1:4 ? They don't sell a coarse aggregate.
The floor has to support a Mira shower tray, a toilet pan and one person !
Thanks
My local Wickes sells 'Ballast' (an all-in aggregate) - will this give my floor the strength it needs at a ratio of 1:4 ? They don't sell a coarse aggregate.
The floor has to support a Mira shower tray, a toilet pan and one person !
Thanks