what concrete floor sealant ?

[stu-180]

Got a mates floor to do this weekend and he has recently had a new 3sqm concrete base laid in his utility room (that needs tiling), its VERY sandy so I want to seal it, can anyone recommend a sealant/impregnator ?

 

[Ajax123]

If it is very sandy it is either too weak or has been poorly cured. It may well not be suitable to tile directly onto.

 

[stu-180]

I'm guessing as its only recently laid (and the house resembles a building site at the moment with all the work going on-hence more dust and dirt on it) that it will be fine, just need to seal it and see what its like after that.
Do bal make a sealant for concrete floors ?

 

[stu-180]

bump................

 

[Gazzer]

How old is the screed and as Ajax says it could be too weak....primer will not act as a magic cure. Trust in Ajax, he is a professional in these sort of things.

 

[stu-180]

It's 3 weeks old.

Its basically where they would have to step out (and down) into their out-house/pantry, so instead of having a step they have now leveled it (raising it up approx 4"), I looked at it the other day (whist the plasterer was mixing up, and a kitchen fitter and sparky working away) and it looked dusty and sandy to me (but this could be because of all the work going on).

I would rather just seal it as its such a small area, BUT if tomorrow when I can get in there properly I see its crumbling away I will have to tell them it needs hacking out and re-laying. (I don't think its that bad though).