mapei super flexible adhesive drying time

[Andyw]

Hi, can anyone advise on the drying time for this adhesive? I should have bought the fast set stuff and now have to wait for aread to dry. I know the fast set can be walked on within a couple of hours.

 

[Gazzer]

24 hours if its slow set.....could be less depending on room temp.

 

[DHTiling]

Ye , usually over night ... 24 hrs approx..floors and 4 to 6 hrs walls.. but i leave over night.

 

[Andyw]

Thanks chaps, is the point of fast set to speed things up so that you can continue to lay and then grout. I could have finished this off if I had used the fast set option.

 

[DHTiling]

Yes fast set for quicker grouting times and for use with moisture sensitive stones etc... etc etc etc

 

[Andyw]

Well this is annoying. I walked over some of the tiles this morning and after some time as I was clearing to lay some more noticed that there were three tiles lower by about 1mm. When I checked yesterday after laying I knew they were pretty level. Anyway I decided to pull them up and expecting them to break, but just by pushing a trowl under they came up. The adhesive has not even set yet and this is after 20-24 hours, I can even roll the stuff into a ball like clay.

I've now found the other fast set adhesive so should I relay with that? The sub floor is pretty cold at the moment could that be the problem? Could I have added too much water to the mix?

 

[DHTiling]

It is set to grout after 24 hrs but that does not mean it will be hard after that time , temperature can also slow the hardening/setting process .

I have stopped using Mapei adhesives now as i find they do tend to slump whilst setting as you have found out..

 

[Andyw]

I'll never use it again. Have used Parace rapid set and that feels more sold just after an hour, not that I will grout until tomorrow.