Underlay - Damp membrane question

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17 Jan 2007
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I've just bought rustic oak laminate flooring from homebase in the sales and the genuinely helpful (carpenter) assistant recommended the softboard underlay for my living room and hall. It was a little more expensive but he said the benefits over the tinfoil covered foam were much better.

Once my carperts are lifted and the old underlay binned, I have tiles under all that, which will remain and the softboard underlay and floor boards will then go down. My question is, do I need a damp proof membrane. The assistant didn't mention anything and as I said, he seemed to know his stuff. :confused:
 
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Yes, it's best to have the dpm there: tiles are cold (if ceramic) or can be sweaty (if vinyl) which both can create moist or condensation problems.
 
Do you think I should stay with the softboard, or take it back for a refund and get the much more popular underlay that already has a DPM?
 
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If the foil on the softboards isn't a DPM (some are) then, yes take it back
 

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