Separating Floors ~ types:-
- Concrete with soft covering
- Concrete with floating layer
- Timber with floating layer
Resilient layers:
(a) 25 mm paper faced mineral fibre, density 36 kg/m^3.
Timber floor † paper faced underside.
Screeded floor † paper faced upper side to prevent screed entering layer.
(b) Screeded floor only:
13 mm pre-compressed expanded polystyrene (EPS) board, or 5 mm
extruded polyethylene foam of density 30†45 kg/m^3 , laid over a levelling
screed for protection.
See BS EN 29052-1: Acoustics. Method for the determination of dynamic
stiffness. Materials used under floating floors in dwellings.
Sound Insulation---Floors