My son took up an old parquet floor which had been nailed through the tongue into the supporting beam below. (Suspended floor) This was about 10 years ago and I would like to use them in a bedroom which is close boarded with a mix of very old and some new replacement boards. Therefore the floor is not particularly level and as the house is over 300 years old nothing is very straight. Could I use something to even out the floor before laying them - something like the material used under a 'floating floor'.
