How to add a concrete layer before tiling?

[Markcub]

Hi,

I want to pour a thin layer of concrete over existing concrete to raise it up prior to tiling it. How do i go about this.?

[JacobZ]

Hi @Markcub,

You can use the QEP Lash 360 1.5mm Levelling Clips with QEP Lash 360 Tile Levelling Caps for levelling of 20mm thick tiles.

It would be best to apply your primer to the whole surface, then add your mortar, allow it to dry, then prime over the top of it before adding the self-leveller. This will ensure you get the best bond between the repair mortar and the concrete, and then the leveller to both.

Jacob

[Markcub]

Hi Guys,

Do you have anything bigger and in regards to the repair mortar.? Below is 10kgs worth. It is shallower at the ends but i reckon i will need 10/15kgs more. I bought a 10kgs tub to start with.

[JacobZ]

Hi @Markcub,

You can use this Dunlop Construction Grout, you would just have to mix it.

You'll want it to be mixed relatively dry so that it can be built up where needed, so add water incrementally until you achieve a low-slump, packable mix.

Let me know if you have any further questions.

Jacob

[Markcub]

Thanks mate, I'm sure i will have more questions at some point. 

[JacobZ]

Always happy to help @Markcub.

It's exciting to see your progress, so keep us in the loop.

Jacob

[Markcub]

Hi Guys,

I have some grout but i have just read the info and its asking for grout booster to be added if used around pools. Do you sell this.?

[Markcub]

Will this work or do you have a cheaper option.?

[MitchellMc]

Hi @Markcub,

Just to clarify, there is construction grout which Jacob mentioned above for filling the depression and then there are grouts for between tiles. Have you now moved on to grouting between tiles with the ARDEX FG8? You should really use products in the same system, so I wouldn't recommend using the Davco grout additive as I'm not aware of whether it has similar properties to the Grout Booster. Your best bet would be to contact ARDEX to discuss, though I presume they will only be able to provide information on and warranty their own products.

Mitchell

[Markcub]

Yes its the grout between the tiles, ive not finished yet but i need to have the products at hand. I will speak to Ardex.

[Markcub]

Hi Guys,

Justa note on the spacers you suggested, they actually catch right at the top on a 20mm tile so they are wider then 1.5mm. I made them work but i would say that the max would be 18mm not 20mm.