System | Access | Airborne (Dntw+Ctr) | Impact (Lntw) | Approx Price/m2 | Floor height gain | Ceiling height loss |
---|---|---|---|---|---|---|
Regulations (refurb) | >43db |
<64db |
||||
Isosonic type C | Best to retain exisiting ceiling |
51 |
55 |
£30.50 exludes 19mm tongue and groove chipboard /flooring finish |
Typical 19mm T&G or sealed original floor+6mm Base underlay+wooden floor of choice |
91mm |
MF Dec18 | floor ceiling required |
49 |
49 |
£36.35 |
26mm build up from existing flooring surface on average 45mm total from joists |
41mm |
MF DEC 9 | Floor ceiling access required |
48 |
48 |
£39.50 |
17mm build up from existing flooring surface on average 36mm from joists |
41mm |
MF TRI DEC | No resilient bars need adding to ceiling |
46 |
56 |
£43.60 |
35mm build up from joists. Note with Lath and plaster ceiling no reilient bars need adding |
0mm |
BG SIF | 51 |
55 |
£34.30 |
7mm above original joist height |
41mm |
|
Typical Lath and Plaster ceiling | 35 |
76 |
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Typical Ceiling (12.5mm Plasterboard | 31 |
81 |
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