Mapei ultra colour plus ...how to use.

[DHTiling]

If i mix a 5kg bag i use 1.2 ltrs of water...perfect mix..😉

 

[andy-p]

If i mix a 5kg bag i use 1.2 ltrs of water...perfect mix..😉

Dave , just recently grouted a 33m2 floor with ultra manhattan grey , i didnt measure the powder/water ratio but mixed it slighly slack , grouted the floor with 2 batches , then cleaned before it set with a washboy. went back 2 days later to collect money and noticed it had dried in shaded , customer didnt seem to notice and was happy but i was sweating bullets, got away with it this time but has put me off mapei , do you reckon not getting the mix exactly right is going to cause shading??

 

[Colour Republic]

Hi..Here a couple charts on how to mix and use mapei ultra colour plus grouts....Thanks to fiona @ mapei for letting me have use of them..

Are these the new or old ones Dave? I remember you posting something similar ages ago and these didn't match up with the instructions on my bag. At the time they were swapping from plastic to foil bags and the instructions changed (maybe even the formular). But can't remember if you posted this way after? Don't want people bringing up old instructions so just checking

 

[DHTiling]

These are seperate instructions to what is on the bag....

If you was off to early then you increase the chance of shading...and also over washing can cause shading as you are over wetting the grout before it is set..This is the same with all grouts and not just mapei...you must let a grout start to set before washing...washing off to early can bring polymers to the surface which makes the grout lighter...some mistake this for efflorescence...

Hope this helps...i and others use mapei grout and have no probs..

 

[GaryM]

In stage 1 of finishing, what does 'strike the joints' mean?

So it's a case of applying 1-2 M ² of grout then immediatly wiping over with a damp sponge. Then I need to 'strike the joints'?

 

[DHTiling]

A light wipe of the joint in one direction with a damp sponge...

 

[GaryM]

Thanks Dave.

 

[DHTiling]

No probs.. as you say grout in small sections and wipe access off.. then leave the grout to set up and then strike the joints for final grout removal... leave to dry and then buff off residue.

 

[Qwerty]

No probs.. as you say grout in small sections and wipe access off.. then leave the grout to set up and then strike the joints for final grout removal... leave to dry and then buff off residue.

Dave, how long roughly does it take to "set up" at normal room temp?

 

[DHTiling]

At 20dgs... around 15 mins..depending on porosity of the tile biscuit it can be quicker.