tile onto dampproof membrane in basement

[b.d.osborn]

Hi,

i need to put tiles onto the floor of a toilet room in the basement, at the moment i have carpet, underlay and some damp-proof membrane on the concrete floor.

can i place standard tile adhesive directly onto the membrane, would i need to put boarding down, or is there a sealer i can use instead of the plastic sheeting?

thanks in advance



ben.

 

[dagger]

i presume the plastic sheeting was applied by the carpet fitters,
if you pull up the carpet, underlay and plastic and the concrete below is solid and dry, the plastic was put down "just in case".

when the concrete screed was originaly installed it should have had a dpm and an insulator such as kingspan.

if its dry and solid tile straight onto it with a good quality single part flexable, i say that because i do not know the material of your tiles!

 

[b.d.osborn]

thanks for the info, i've checked under the plastic sheeting and unfortunately it is damp underneath. i was hoping i could use your suggestion. i think the people who did the kitchen tiling put bitumen down? would that be an option?

the tiles are ceramic.


thanks again


Ben.

 

[White Room]

The polythene could have caused condensation, cold floor warm room.

How old is your house

 

[dagger]

oh that is a problem, what are the walls in the basment like?
does it smell damp constantly?
you may be able to install a new dpm and 60mm of sand and cement screed then tile, but without a site visit its very difficult to say?

and whitebeam has a point also!

when you hear this stuff its very, very difficult to remedy over the internet!

have you called a contractor?

 

[b.d.osborn]

the whole of the basement was "tanked" using the same PVC membrane.

the basement does smell a little damp most of the time.

the house is over 100 years old, the basement was converted about ten years ago.

thanks


Ben.

 

[White Room]

What dagger says about the screed but aplying a system before the screed for concrete with damp Xypex Corporation

 

[b.d.osborn]

thanks for the help i'll give that a try.

ben.

 

[dagger]

What dagger says about the screed but aplying a system before the screed for concrete with damp Xypex Corporation

that product is a dpm, i personally was thinking mapelastic smart?

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i am sure this product is suitable, but as always check with the technical department for the products you are using!

 

[White Room]

Never used the mapelastic smart, the xypex is something we used in a basement which had damp with good results

 

[dagger]

i must say comparing the pdfs the both say "practically" the same thing.
check them both out and good luck!

 

[dagger]

Never used the mapelastic smart, the xypex is something we used in a basement which had damp with good results

likewise i have not come across the product xypex,
never the less sounds like it fits the bill, thanks!

 

[Ajax123]

likewise i have not come across the product xypex,
never the less sounds like it fits the bill, thanks!

Xyp[ex make a lot of waterproofing admixtures for the concrete industry. I have come across them lots of times and found the products I have used excellent. No reason to expect this one to be any different