Maxiboard for Ceilings - Acoustic Data
Maxi 60 Ceiling
Dropped Maxi Ceiling
Maxi 30 Beam and Block
Maxi 30 Ceiling (30 Minutes Fire Resistance)
| Maxi 30 Ceiling | |||
| Airborne | Impact | ||
| DnT,w (dB) | DnT,w + Ctr (dB) | LnT,w (dB) | |
| Maxi 30 only | 50 | 43 |
61 |
| With Acoustilay 8 - Without board | 53 | 46 | 35 |
| With Acoustilay 15 - Without board | 55 | 49 | 37 |
Maxi 30 ceiling consists of 100mm fibre glass quilt between the floor joists, with Resilient Bars fixed to the underside of the joists at 400mm centres. Maxiboard is then fixed to the bars using SRS Maxi Screws (30mm x 3.9mm). All joints are sealed with SRS Gripfix and the perimeter is finished with a bead of SRS Acoustic Sealant.
Acoustic tests on Maxi 30 ceilings carried out independently by Noise Control Services, 16/05/03. The tests, on Acoustilay 8 and 15, were conducted prior to the changes to the ANC PCT scheme that now requires impact sound insulation tests to be conducted on a rigid board, when a proprietary underlay has been installed. The tests were carried out in accordance with ISO 140 parts 4 and 7. Rated to ISO 717 parts 1 and 2. Test reference numbers: 5031-5036. Fire performance: achieves 1/2 hour fire resistance to BE EN 1365-2 floor/roof (WARRES 124986).
Click here to see a graph of airborne results
Click here to see a graph of impact results
When impact testing Acoustilay above a Maxi 30 Ceiling the ANC requirement would be to test on a rigid board. In this situation, SRS Ltd would expect the impact performance to be around 6dB better than when testing on the bare floor above the ceiling system.
Maxi 60 Ceiling (60 minutes Fire Resistance)
| Maxi 60 Ceiling | |||
| Airborne | Impact | ||
| DnT,w (dB) | DnT,w + Ctr (dB) | L'nT,w (dB) | |
| Maxi 60 only | 53 | 48 | 57 |
| With Acoustilay 8 - Without board | 58 | 52 | 30 |
Maxi 60 ceiling consists of 100mm, 45kg/m3 mineral fibre slabs between the floor joists, with Maxi Resilient Bars fixed to the underside of the joists at 300mm centres. Maxiboard is then fixed to the bars using SRS Maxi Screws (30mm x 3.9mm). A single layer of 12.5mm fire rated plasterboard is fixed below the Maxiboard. All joints are sealed with SRS Gripfix and the perimeter is finished with a bead of SRS Acoustic Sealant.
Acoustic tests on Maxi 60 ceilings carried out independently by Noise Control Services, 02/06/03. The tests, on Acoustilay 8 above the Maxi 60, were conducted prior to the changes to the ANC PCT scheme that now requires impact sound insulation tests to be conducted on a rigid board, when a proprietary underlay has been installed. The tests were carried out in accordance with ISO 140 parts 4 and 7. Rated to ISO 717 parts 1 and 2. Test reference numbers: 06031/1-4. Fire performance: achieves 1 hour fire resistance to BE EN 1365-2 floor/roof (WARRES 127725).
When impact testing Acoustilay above a Maxi 60 Ceiling the ANC requirement would be to test on a rigid board. In this situation, SRS Ltd would expect the impact performance to be around 6dB better than when testing on the bare floor above the ceiling system.
Click here to download the new Maxi 60 Datasheet
| Maxi ceiling below existing plasterboard | |||
| Airborne | Impact | ||
| DnT,w (dB) | DnT,w + Ctr (dB) | LnT,w (dB) | |
| Dropped Maxi 30 | 56 | 48 | 56 |
Acoustic tests on Dropped Maxi Ceiling carried out independently by Noise Control Services, 11/11/05 in accordance with ISO 140 parts 4 and 7. Rated to ISO 717 parts 1 and 2. Test reference number 11056/1, 11056/3.
Click here to see a graph of airborne results
Click here to see a graph of impact results
Maxi 30 - Beam and Block (60 Minutes Fire Resistance)
| Maxi ceiling below beam and block | |||
| Airborne | Impact | ||
| DnT,w (dB) | DnT,w + Ctr (dB) | L'nT,w (dB) | |
| Maxi B&B | 51 | 47 | 52 |
A variation of the Maxi 30 ceiling can be installed below a beam and block floor to achieve the required level of sound insulation stipulated by the building regulations. 50mm x 50mm soft wood battens are fixed via proprietary clips to the underside of the beam and block floor at 600mm centres. 50mm mineral fibre slabs are friction fitted between the battens. SRS Resilient Bars are then fitted across the battens, at 400mm centres.
Acoustic tests on Maxi 30 Beam and Block ceiling carried out by SRS Ltd, 09/06/04 in accordance with ISO 140 parts 4 and 7. Rated to ISO 717 parts 1 and 2. Test reference number EXET03-04. Fire performance: achieves 1 hour fire resistance to BE EN 1365-2 floor/roof (WARRES 143085).
Click here to see a graph of airborne results
Click here to see a graph of impact results
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