concrete floor

[bagger]

ive just finished putting up my conservatory and wondered if it was ok to leave the concrete floor as it is without any screed and lay laminate ontop? what are the advantages of a screed finish

 

[PrenticeBoyofDerry]

Do you have insulation and DPM under the concrete?

 

[bagger]

yes the floor is 150mm hardcore ,50mm sand blind, dpm, 50mm insulation,100mm concrete

 

[Deluks]

If the concrete is nicely floated then no probs. Otherwise you may have to put a few bags of self levelling down.
Any imperfections will be amplified if you try to put down laminate.