Thin bonded screed over concert base

[jonnyc]

alan they removed the the wood block because they had dry rot.
the thought from others is that this was caused by moisture coming up through holes cut in slab around columns and along the sides of walls .
concrete is quite uneven and way out of level and would need to be latexed first.
i will look up john newton . any help or thoughts much appreciated.
i ahve no problem with laying the stone floor. its a great job but this prep of subbase is out of the norm for me and i would rather they get an expert in who can deal with the moisture problem and screeding so i can then do what i quoted to do and have been accepted to do.
ie lay ditra mat and stone

 

[Mark S]

Jonny,
You have been given some good advice for the forum members.
Before you start have a look at the Mapei, Triblock P, designed for damp substrates, they also have a range of leveling screeds that could be applied on top to provide a good finish before you tile, they will write up a spec for you as well if you ask, they will also suggest their tile adhesive and grout!!

 

[Ajax123]

The triblock p looks like an interesting option. I would need confirmation of its suitability with rising damp from Mapei first and the on create will need to b thoroughly prepped first but looks worth a phone call at least.

 

[jonnyc]

mark . i will check this out now . if alan fancies it as well we could be on to a winner. are you connected to mapei .
i see you are on distinguished road which by strange coincidence i am too.
i have never seen this till now, what is all that about.

 

[Mark S]

Jonny,
I worked for Mapei for 4 years(screeds and levelers), so am familiar with the screeding products and some of the more obscure ones like Triblock, but do take advice from them.