Do I need a DPM?


Postby Jeremy R » Mon Nov 24, 2008 5:09 pm

I am about to put down a laminate floor (Floormaster "tile loc") in my kitchen; the house is about 5 years old and I believe that the sub floor is concrete with vinyl tiles adhered directly to it. Can anyone advise whether I will need to put down a damp-proof membrane, or can I simply lay the laminate boards directly onto the tiles?
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Postby aceone » Wed Dec 10, 2008 6:17 pm

you wont need a DPM but you will need an underlay under the boards,if in dought get the underlay with a vapour barrier
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Postby GaryS » Wed Dec 31, 2008 12:11 am

Rubbish you [b]always[/b] need a vapour barrier with a concrete subfloor or you run the risk of moisture destroying the laminate.
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Postby the specialist » Fri Jan 09, 2009 3:48 pm

except in this case the vinyl tiles will act as a vapour barrier!
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Postby GaryS » Wed Jan 14, 2009 8:04 pm

[quote="the specialist"]except in this case the vinyl tiles will act as a vapour barrier![/quote]

Tiles are not an adequate vapour barrier moisture can penetrate at seams of tiles and you do not even know the condition of said tiles better safe than sorry something like quickstep combifloor or barrier foam plus is ideal and reasonably cheap
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Postby TheDoctor5 » Mon Jan 26, 2009 10:19 am

Last year 64% of the questions asked in our forum were answered within our DIY project pages at www.diydoctor.org.uk/projects.htm The project pages are now separated alphabetically and your answers are accompanied by diagrams and the ability to see, and buy, the tools and/or required to complete your project. Use our search box to look for your answer and save a great deal of time and money!
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Postby J.G.F » Wed Feb 18, 2009 11:21 am

[quote="GaryS"][quote="the specialist"]except in this case the vinyl tiles will act as a vapour barrier![/quote]

Tiles are not an adequate vapour barrier moisture can penetrate at seams of tiles and you do not even know the condition of said tiles better safe than sorry something like quickstep combifloor or barrier foam plus is ideal and reasonably cheap[/quote]

Im with garys on this hes 100% right!
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