Lay DPM directly under patio slabs?


Postby Alvin Wyllie » Thu Jun 06, 2013 6:35 pm

Hallo, I've nearly finished building a patio, and I've had a jumbo bag of builders' sand delivered to level it all off. However, I now see that the manufacturer of the patio slabs I want to buy from recommend a granular sub base, not sand. Would it be a good idea to lay a thick DPM on the sand, direct under the patio slabs in order to stop the sand retaining water in wet weather? (usually plenty of that in South Wales). Your expert advice gratefully accepted!
Alvin Wyllie
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Postby welsh brickie » Fri Jun 07, 2013 5:36 am

no, mix cement with it, it does not have to be wet the moisture in the ground will set it, and then level it
welsh brickie
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Postby Alvin Wyllie » Fri Jun 07, 2013 3:21 pm

Sounds good to me, I'll do that. Many thanks.
Alvin Wyllie
Posts: 22
Joined: Thu Jan 31, 2008 9:39 am


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