I'm trying to lay a solid oak floor to a concrete base. Unfortunately there were Marley tiles on the existing floor (I'd forgotten they were there until I lifted the carpet). I've laboriously removed the 250 marley tiles with a heatgun and scrapper but the bituminous adhesive is impossible to remove completely.
The adhesive manufacturers say the adhesive won't work well over the bitumen layer so I have to cover it up. A layer of 6mm plywood has been suggested and it seems a good idea.
My question is what is the best way of securing the plywood to the concrete floor? I'm thinking that a nailgun would be the best method here. The area to be covered is 22 m2.
TIA,