Self Leveller to Engineered Wood

[charliegolf]

HI all

I have searched, but not got a clear answer.
I will be using a self leveller on a concrete floor on Friday, not too thick generally, but maybe 25 mm fall away at one edge.

Questions:

1. does the floor (clean and stable, not crumbly) need a primer?
2. How long for walking?
3. How long to lay engineered wood. (one guy says 28 days!)

Round here, been raining every day for weeks, so damp atmosphere if that extends time. (floor bone dry).

Thanks

CG

 

[charliegolf]

I'm hurt!

 

[mcprinter]

DIYer
Only done it once for a 30mm lift. Mapei 3240 (3 to 40mm) worked well
Couple of dips after this filled with 1210 (1 to 10mm)

1. Yes. Or the concrete will suck the moisture out of the SLC. Wickes do a smaller Setcrete SLC primer. PVA not suitable.
2. A few hours.
3. A few days for your depth