Quarry floor, no damp course.

[Andy Allen]

Look at a floor today
Problem is it's a 200 year old house, no damp course and quarry tiles down.
They want porcelain tiles fitting on top the quarry tiles.......obviously not keen on that idea......but before I bin the job....anyone got any suggestions on how it can be done..?

 

[Old Mod]

Do you know what's under quarries Andy?

 

[Andy Allen]

Do you know what's under quarries Andy?

Ain't got a clue mate......just no there's no damp course....

 

[Flintstone]

Don't tilemaster make a liquid dpm ?

 

[Flintstone]

One Coat Damp Proof Membrane | Tilemaster Adhesives - http://www.tilemasteradhesives.co.uk/one-coat-damp-proof-membrane

 

[Old Mod]

Sort mate was just getting home.
From memory, or tho I've never dealt with it.
As long as it's not a lime screed, cos they must be able to breath, and that your sub floor is all good sound and load bearing.
Liquid dpm as Andy above says, then you can level over it with Arditec NA or similar. (I'm sure Isomat do liquid dpm and a leveller that'll go over it)
Then tile it.
I stand to be corrected tho.

 

[LM]

Sorry Marc it's Arditex Na

Don't shoot the messenger lol

 

[Ttt1601]

Ultra tile do a liquid DPM, and a product called surpress it, spoke with a rep recently that similar situation recommended using suppress it, am doing it next week, should get the stuff delivered tomorrow, but they have a data sheet online for it

 

[LM]

I've just set myself up to get slaughtered there haven't I

 

[Flintstone]

If your using the epoxy dpm such as tilemaster, I can't see why a regular leveller wouldn't be fine on top.

 

[LM]

All joking aside @Andy Allen you can easily do as Marc says and use ARDITEX NA - http://www.ardex.co.uk/ProductDetail.aspx?ProductID=18
under and above a range of DPM's, but it's better to stick with the one manufacturer. I certianly wouldn't walk from the job over it.

 

[Andy Allen]

Anyone ever used them liquid DPM ?

 

[Andy Allen]

All joking aside @Andy Allen you can easily do as Marc says and use ARDITEX NA - http://www.ardex.co.uk/ProductDetail.aspx?ProductID=18
under and above a range of DPM's, but it's better to stick with the one manufacturer. I certianly wouldn't walk from the job over it.

That looks the business......any idea how much it is ?
And have you used it before?

 

[LM]

Anyone ever used them liquid DPM ?

Yes I've used them a lot over the years. It's not rocket science, you just need to make sure there's no contamination on the substrate, get a long haired roller and tray and stick strictly to the instructions and your good to go.
Some of them require you to flash the floor with coarse sand while you go along after you've applied the DPM to give a key for the self leveller.

 

[LM]

That looks the business......any idea how much it is ?
And have you used it before?

Prices will vary hugely depending on where you are and how much you buy. For products like this I find soft flooring trade suppliers much more competitive as they would sell alot of it. Are there any Mercado outlets near where you are?