Decoupling matt on screed

[Pocster]

41 minutes ago, Nickfromwales said:

Make sure you don’t go off the straight line when laying or it’ll quilt up and then you’re into cutting out sections and patching. It’s quite hard to spot too

With the glue it went down no problem and stuck like sh*t . Bit of ‘sliding ‘ to get in position . Walking over it sliding my feet then some tiles at the edges for weight . Next day 100% bonded to screed . What a pro I am ??

[Olly P]

What glue did you use to fix the decoupler mat to the screed? I have about 200sqm to do. And also, the boiler is installed but not fired yet as there is no rads coupled up yet, the screed is call retinol and went down semi dry (it is sand and cement with an additive and fibres).  I've sheeted the screed from day one so as no plaster or drywall paint etc would contaminate it, hopefully making my job slightly easier. Do I need to prep the floor in any other way before I start? 

[MortarThePoint]

@pocster How did it turn out once you got some tiles on?

 

I was wondering how much height this adds? Tile adhesive applied with a 10mm square tiling trowel will leave a layer of around 3-4mm depth normally wouldn't it? Do you then simply add the thickness of the decoupling mat?

 

Is it normal to glue the decoupling mat down? I thought people used something similar to tile adhesive. What glue did you use?

Edited January 21, 2022 by MortarThePoint

[Pocster]

3 hours ago, MortarThePoint said:

@pocster How did it turn out once you got some tiles on?

 

I was wondering how much height this adds? Tile adhesive applied with a 10mm square tiling trowel will leave a layer of around 3-4mm depth normally wouldn't it? Do you then simply add the thickness of the decoupling mat?

 

Is it normal to glue the decoupling mat down? I thought people used something similar to tile adhesive. What glue did you use?

No probs I.e no cracked tiles ?

I always think … mat 3mm , notch 6mm . So 10 ish - but when compressed etc . more like 6mm.  

[MortarThePoint]

A tiler has recommended this stuff:

    https://www.amazon.co.uk/dp/B088MM6B94?th=1

Works out about £5/m2 ex VAT

 

Anyone seen it before?

[Pocster]

18 minutes ago, MortarThePoint said:

A tiler has recommended this stuff:

    https://www.amazon.co.uk/dp/B088MM6B94?th=1

Works out about £5/m2 ex VAT

 

Anyone seen it before?

Certainly looks like a tile decoupling Mat 👍

[JackofAll]

On 21/01/2022 at 19:36, Pocster said:

No probs I.e no cracked tiles ?

I always think … mat 3mm , notch 6mm . So 10 ish - but when compressed etc . more like 6mm.  

I have 25mm at slider for tile plus adhesive, am thinking 3mm decoupling mat will leave it very tight(if using some type of glue as adhesive would put me over 25mm). Does the whole back surface of mat need glueing?

[Pocster]

7 minutes ago, JackofAll said:

I have 25mm at slider for tile plus adhesive, am thinking 3mm decoupling mat will leave it very tight(if using some type of glue as adhesive would put me over 25mm). Does the whole back surface of mat need glueing?

Yep . You’ve got the glue it completely down otherwise it won’t be doing its job .