Follow our great ideas for converting loft spaces over the coming weeks.
6. Sound proof it - Accoustic seperation is critical. There is a minimum soundproofing requirement, but this is inaqequate where the use of the attic room is likely to be noisy, such as a playroom. If the floor is to have a hard surface, such as a wooden floor, an acoustic floor is essential. Sound can travel between attic rooms and the floor below by two means; airbourne and impact transfer.
The first can be reduced by making sure the structure is air tight, taping insulation materials together, and using sealant around the floor edges etc. The voids between the floor joists can be filled with high-density acoustic insulation, atthough this cannot be used around recessed spotlights. Using high-density fibre reinforced plasterboard (e.g Fernacell) can also reduce sound transfer.
Impact transfer can be reduced by using caulking to seperate the structural floor joists from the wooden floorboards and ensuring there are no fixings - screws or nails - between the flooring and the joists.
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