Thirsty Concrete Conservatory Base

I have recently bought a doer upper, the conservatory wasnt quite finished in that there was no floor laid yet.
I was planning to lay some level and then tiles so went to prep the floor just with some pva but the base was so porous and there seemed to be very little cement in it!
I added some more water to the situation but could literally bring in the hose and leave it running and the base just drank it up!
Im starting to think pva will probably not be sufficient, what do you guys think?
Thanks

 

pva is no good for that type of work

 

pva is for paper mache not for priming a floor, get some acrylic primer and roll that on with a paint roller, do 2 coats if its that porus.

 

Pva is not moisture tolerant so if you have any residual moisture or damp whatever you put on top of the pva will pop!!!!! If you have used pva I'd sand it off then apply either a primer suitable for the concrete once tested for damp. Personally I would use ardex n/a levelling compound with there primer or a couple of coats of the latex mixed with water to prime the surface

 

You guys dont like Pva hey? Ive done a couple of tiled floors before and used PVA and had no issues to date, are you saying I should never use PVA to prep a concrete floor I'm sure it says on the tub it can be used for it? what would you advise for a general use concrete primer for level and tiling then?

 

No issues to date is the key word here..... Pva is an adhesive and can be used to prime but concrete can hold moisture, moisture and pva and some primers don't mix..... Always best to follow guidelines from whatever adhesive your using etc.... I'm a vinyl floor layer and it's a different field to ceramics but the weight of your tiles and adhesive forms a good bond to most surfaces. Also worth pointing out if your tile adhesive has a higher compressive strength than your leveller or concrete it will rip it clean off the floor

 

Worth looking at ultra floor products you will find most of there levellers and adhesives at your local ceramic stockist along with primers and instructions

 

Ok mate thanks for the advice.

 

Just check that the floor is concrete and not calcium sulphate anhaladrite/ gyvlon it is commonly used nowadays as an alternative massively important when preparing floors