I am about to embark on laying an oak floor in my house. This will be partly on a concrete sub-floor and partly on joists.
Regarding the joist areas, I really wanted to remove the existing floor in the two rooms (nailed pine boards in one room and chipboard in the other) and then secret nail the oak floor directly to the floor boards. Unfortunately, the manufacturer states that this can only be one where maximum distance between centres (?) is 300mm, whereas my joists appear to be approx 380mm apart judging by the nails in the existing floor. The solid oak I want to lay is 140mm wide and 20mm thick. Height is a bit of a premium in the rooms, hence wanting to remove the existing boards and so I have a dilemma. I am considering laying thin plywood (say 9mm) and then nail through the ply into the joists. Is this a good idea ? Are there alternatives ?
Also, is the use of DPM necessary with or without the plywood ?
Many thanks for any help
Dan
Regarding the joist areas, I really wanted to remove the existing floor in the two rooms (nailed pine boards in one room and chipboard in the other) and then secret nail the oak floor directly to the floor boards. Unfortunately, the manufacturer states that this can only be one where maximum distance between centres (?) is 300mm, whereas my joists appear to be approx 380mm apart judging by the nails in the existing floor. The solid oak I want to lay is 140mm wide and 20mm thick. Height is a bit of a premium in the rooms, hence wanting to remove the existing boards and so I have a dilemma. I am considering laying thin plywood (say 9mm) and then nail through the ply into the joists. Is this a good idea ? Are there alternatives ?
Also, is the use of DPM necessary with or without the plywood ?
Many thanks for any help
Dan