De coupling Mat

[Pocster]

Will be installing this soon .

As some of my floor is screed and some marine ply do I just apply the mat across both ? . As you can see there are a few gaps and the marine ply is a few mm lower than the screed .

What should I fill the gaps with ?

Should I ignore the slight height differences across the different floor materials and just lay the de coupling mat straight across ?

 

thanks in advance!

[SteamyTea]

This stopped me coupling.

 

[Pocster]

2 minutes ago, SteamyTea said:

This stopped me coupling.

 

Did you get your misses to pose for that photo ? . You’ve given me some dangerous ideas !!

[SteamyTea]

54 minutes ago, pocster said:

Did you get your misses to pose for that photo ? . You’ve given me some dangerous ideas !!

No, she was out.

[nod]

1 hour ago, pocster said:

Will be installing this soon .

As some of my floor is screed and some marine ply do I just apply the mat across both ? . As you can see there are a few gaps and the marine ply is a few mm lower than the screed .

What should I fill the gaps with ?

Should I ignore the slight height differences across the different floor materials and just lay the de coupling mat straight across ?

 

thanks in advance!

You can use tile adhesive 

But let it set before you put your 5 mil adhesive down for your Ditra 

Ardex for the ply 

[Pocster]

3 minutes ago, nod said:

You can use tile adhesive 

But let it set before you put your 5 mil adhesive down for your Ditra 

Ardex for the ply 

So ‘skim’ tile adhesive over gaps and marine ply to make a nice level surface ?

[nod]

20 minutes ago, pocster said:

So ‘skim’ tile adhesive over gaps and marine ply to make a nice level surface ?

Yes 

When using matting always do the levelling before the matting goes down 

[Pocster]

41 minutes ago, nod said:

Yes 

When using matting always do the levelling before the matting goes down 

Ahhh ! . Ok . Tile adhesive to ‘level’ it will only be a few mm thick . Not going to crack or anything is it ?

Guess I should pva the marine ply before applying the adhesive?

[nod]

No it will be fine 

don’t use PVA with tiles 

SBR is more reliable 

 

[SteamyTea]

41 minutes ago, pocster said:

Guess I should pva the marine ply before applying the adhesive?

No, effing CT 1, have you learnt nothing.

[Pocster]

15 minutes ago, SteamyTea said:

No, effing CT 1, have you learnt nothing.

Of course ! . You are right ! . Why do I buy any other materials other than ct1 I don’t know !!

[Oz07]

I thought he said ardex to self level then stick matt down with tile adhesive 

[Pocster]

On 10/04/2020 at 18:02, Oz07 said:

I thought he said ardex to self level then stick matt down with tile adhesive 

Yes @nod please confirm .

 

So SBR ply 

Then Ardex to level ply with screed : which Ardex product ?

 

Then when all dry de coupling mat on top.

 

 

[nod]

1 hour ago, pocster said:

Yes @nod please confirm .

 

So SBR ply 

Then Ardex to level ply with screed : which Ardex product ?

 

Then when all dry de coupling mat on top.

 

 

Ardex adhesive to stick the matting to the ply 

[Pocster]

2 minutes ago, nod said:

Ardex adhesive to stick the matting to the ply 

Sure .

But what do I use to build the ply level up ? So it’s level with the screed .

[dave2878]

Self level . To get level .  If you can change the ply for Hardie backer board.  It doesn't expand and contract like ply. Plus ply nowadays is poor quality. 

[dave2878]

If there is concrete under ply just self level the area to bring you up level. 

Never use pva

[Pocster]

1 hour ago, dave2878 said:

If there is concrete under ply just self level the area to bring you up level. 

Never use pva

Nah. It’s timber frame under the marine ply .

[dave2878]

Self level of you are bothered about height.   If it only a few mm the adhesive can deal with it. . .  Clear dust the SBR . And use a decent adhesive . Bal or Weber Weber are my preference.