Acoustic insulation panels for directly fixed ceilings
Isolgomma’s directly fixed ceiling systems are designed to improve acoustic insulation between rooms on different floors while keeping the additional thickness down to a minimum.
Anti-vibration connectors and acoustic insulation panels decouple the ceiling lining from the floor structure, helping reduce the transmission of airborne noise and impact noise.
This solution is particularly suitable for refurbishment projects and can be combined with under-screed or underfloor systems to further improve overall acoustic performance.
Excellent environmental performance
Up to 90% recycled material
Certified quality
Predalles slab
The Predalles slab is widely used in residential and multi-storey buildings thanks to its rapid installation and good load-bearing capacity.
However, its rigid structure can facilitate the transmission of impact sound. A directly fixed ceiling system incorporating resilient fixings and sound-insulating panels helps reduce the transmission of vibrations and improve sound insulation, including in existing buildings.
Existing structure
| Product | Lnw(dB) | Rw(dB) |
|---|---|---|
| Predalles | 82 | 53 |
Existing structure + directly fixed ceiling
| Product | Lnw(dB) | Rw(dB) |
|---|---|---|
| MUSTWALL 33B | 59 | 64 |
| MUSTWALL 18B | 65 | 62 |
Existing structure + directly fixed ceiling + under-screed system
| Product | Lnw(dB) | Rw(dB) |
|---|---|---|
| MUSTWALL 33B | 45 | 66 |
| MUSTWALL 18B | 47 | 64 |
Concrete slab
Reinforced concrete floor slabs are widely used for their structural performance. Their high mass can provide good airborne sound insulation.
A properly designed, directly fixed ceiling system with resilient fixings and pre-assembled sound-insulating panels can further improve sound insulation against airborne and impact noise, while adding only a limited thickness.
Existing structure
| Product | Lnw(dB) | Rw(dB) |
|---|---|---|
| Concrete slab | 82 | 53 |
Existing structure + directly fixed ceiling
| Product | Lnw(dB) | Rw(dB) |
|---|---|---|
| MUSTWALL 33B | 57 | 63 |
| MUSTWALL 18B | 61 | 61 |
Existing structure + directly fixed ceiling + under-screed system
| Product | Lnw(dB) | Rw(dB) |
|---|---|---|
| MUSTWALL 33B | 47 | 64 |
| MUSTWALL 18B | 49 | 62 |
Timber joist floor
Sound insulation beneath the beams
Timber joist floors generally offer limited sound insulation, particularly at low frequencies. In combination with effective acoustic treatment from above, a ceiling system installed beneath the beams can improve overall performance. REDFIX acoustic hangers and Isolgomma pre-assembled sound-insulating panels help reduce impact sound transmission and improve airborne sound insulation.
Existing structure
| Product | Lnw(dB) | Rw(dB) |
|---|---|---|
| Beam-and-board floor structure | 93 | 27 |
Existing structure + directly fixed ceiling
| Product | Lnw(dB) | Rw(dB) |
|---|---|---|
| MUSTWALL 33B | 56 | 59 |
| MUSTWALL 18B | 58 | 57 |
Existing structure + directly fixed ceiling + under-screed system
| Product | Lnw(dB) | Rw(dB) |
|---|---|---|
| MUSTWALL 33B | 42 | 68 |
| MUSTWALL 18B | 44 | 67 |
Timber joist floor
Sound insulation between the beams
For existing timber joist floors, installing a full ceiling lining beneath the beams is not always possible. In these cases, sound insulation can be improved by treating the spaces between the joists. Installing Isolgomma pre-assembled sound-insulating panels and filling the cavities with sound-absorbing polyester fibre panels helps improve overall acoustic performance while retaining the appearance of exposed beams.
Existing structure
| Product | Lnw(dB) | Rw(dB) |
|---|---|---|
| Beam-and-board floor structure | 93 | 27 |
Existing structure + directly fixed ceiling
| Product | Lnw(dB) | Rw(dB) |
|---|---|---|
| MUSTWALL 33B | 79 | 42 |
| MUSTWALL 18B | 81 | 40 |
Existing structure + directly fixed ceiling + under-screed system
| Product | Lnw(dB) | Rw(dB) |
|---|---|---|
| MUSTWALL 33B | 54 | 62 |
| MUSTWALL 18B | 56 | 59 |
Easy installation
Correct installation is essential for achieving the intended acoustic performance. Watch our installation video for clear, practical guidance on fitting our products correctly and safely.
