Repair old SLC or not?

[slikt]

Guys,

I've just taken up old vinyl tiles in my kitchen and 40% have taken the old SLC up with leaving areas down to the concrete, i'm laying insulation boards over it using 'Mapei Proflex' my question is, should i skim over the patches first (only 1-2mm deep) with some adhesive and let it dry or just lay a nice base coat of adhesive and lay the boards? Cheers

Pic attached

 

[slikt]

Anyone??

 

[charlie1]

Why dont you just put down some more SLC?

 

[slikt]

As its only 1-2mm and thought it should be 3mm min?

 

[Andy Allen]

hi, i would slc first then lay the boards, bal solid base....2mm to 12mm and tile after four hours.

 

[Rich]

What is the floor made of? It is hard to tell from the pics.

As long as the floor is prepped correctly I would SLC as above. You dont want any voids under the boards.

 

[slikt]

What is the floor made of? It is hard to tell from the pics.

As long as the floor is prepped correctly I would SLC as above. You don't want any voids under the boards.

Its a concrete sub floor with a SLC screed. The areas of damage is where i've lifted the old vinyl tiles off.

Had someone on my other post tell me to use the adhesive to act as a filler, so I've gone with running a thin coat of Mapei ProFlex adhesive over the top as i'm using this to adhere the boards in the morning. Maybe not by the book, but i'm 99% sure this will be ok :blush5: (I hope) lol ???

 

[Rich]

No that should be fine

 

[White Room]

Give the floor a prime first just in case of any dusty surface...

 

[slikt]

No that should be fine

Cheers Rich and glad you said that as i've already done it. . lol

 

[slikt]

Give the floor a prime first just in case of any dusty surface...

Hi Whitebeam

I primed it with 2 coats of BAL Bond SBR 1:2 ratio, should I prime the new adhesive i've used as filler before applying more to stick the boards? Cheers

 

[DHTiling]

As long as what's left (slc) is stuck firmly.. then stick the boards over the top... use a slightly deeper trowel to over come the unevenness..

 

[slikt]

As long as what's left (slc) is stuck firmly.. then stick the boards over the top... use a slightly deeper trowel to over come the unevenness..

Cheers Dave