Attaching Ditra Matt to Screed

[Screwed]

Hi All,

I know it sounds strange but I have been asked to tile my wife's aunts lean to floor! The lean to is of pvc conservatory (about 20 odd years old) type with a screeded floor that they wish to have tiled. They have complained of water coming up through the floor, however I suspect it may be where the door frames have not been installed and sealed correctly. To ensure it is completely water tight I wanted to install a waterproof membrane first and seal this around the door frames etc.

Does this sound ok - if so should I use the same flexible floor adhesive as used for the tiles?

Thanks

Mike.

 

[vinn]

If you have a concrete floor does the slab have a membrane below it?
What kind of screed is on the floor?
What kind of floor covering was previously down?
You have to be pretty certain as to where the water is coming from - is it rising, penetrating or condensation?
Is the inside floor higher than the outside ground level?

Photos would help?

 

[Screwed]

Hi Vinn,

I'll try and get pics the next time I'm there. There was no previous floor covering, they step out of their back door down onto concrete, this is the lean to area, not sure about any DPM below this. I'm almost 100% certain the damp is coming from the poor door fitting.

Cheers

Mike

 

[Screwed]

Here's some images.....

 

[Screwed]

Some more