Technical Structure
Acoustic DATA:
SonaSpray fc installations can be tailored to meet your specific project acoustic need. There is a choice of finish, you may select texture and colour and acoustic performance. SonaSpray fc can be applied at variable thickness and variable areas to provide designed acoustic ambience. It is spray applied to the full sound absorber thickness in one application.
SonaSpray fc standard absorption coefficients
| Thickness in mm |
125Hz |
250Hz |
500Hz |
1000Hz |
2000Hz |
4000Hz |
NRC |
| 8mm |
0.07 |
0.18 |
0.63 |
0.78 |
0.90 |
1.01 |
0.60 |
| 12mm |
0.09 |
0.22 |
0.71 |
0.94 |
1.02 |
1.01 |
0.70 |
| 16mm |
0.11 |
0.34 |
0.85 |
0.94 |
1.04 |
1.04 |
0.80 |
| 20mm |
0.12 |
0.34 |
0.85 |
0.99 |
1.04 |
1.04 |
0.80 |
Test DATA certified by TNO Technical University Delft NL. Tests were on a solid backing, a sound absorbing fc panel substrate with air space behind the panel will change absorption; normally there is improved absorption at low frequency.
Thermal DATA:
SonaSpray insulates by creating dead air spaces macroscopically between and within the hollow cellulose fibres.
Mass:
Dry Weight of SonaSpray fc per 10mm thickness = 1.60 kg/m2
Dry Weight of SonaSpray fc per 20mm thickness = 3.20 kg/m2
Bonding to Substrate:
SonaSpray fc sound absorber can be applied to virtually any substrate; some surfaces may need priming to control suction. Old surfaces may need a barrier coating to prevent staining from leaching out of contaminants while the surface is wet. Fully cured SonaSpray fc will improve strength.
Bonding Substrate:
SonaSpray fc sound absorber can be applied to virtually any substrate; some surfaces may need priming to control suction. Old surfaces may need a barrier coating to prevent staining from leaching out of contaminants while the surface is wet. Fully cured SonaSpray fc will improve strength.
Bond Strength::
Sonaspray fc >600 psf ASTM E-736
Compression Strength::
SonaSpray fc >400 psf ASTM E-761.
Durability:
The adhesive used with SonaSpray fc sound absorber provides a strong, durable and resilient bond. When fully cured, surface strength of old plaster will typically improve by a large margin.
Condensation Control:
For areas such as indoor pools, SonaSpray fc aids in condensation control. The proper combination of SonaSpray fc and ventilation prevents condensation on metal, concrete and other surfaces. SonaSpray fc sound absorber actually reduces ventilation requirements, saving in both the ventilation equipment cost and operating costs.
Where to use :
SonaSpray fc can be quickly and effectively applied to most prepared surfaces and construction configurations. This allows minimum working down time in existing structures with abilities to meet critical deadlines in new construction. SonaSpray fc has a fine surface texture and is suited to ceilings of offices, restaurants, receptions, designer homes, school rooms, swimming pools; in fact it’s an excellent sound absorber for any premium indoor space with a noise problem.
RH Control :
SonaSpray fc is a natural humidity moderator. At times of increasing humidity SonaSpray fc will absorb large amounts of water vapour. When the humidity drops SonaSpray fc will exhale water vapour and maintain a balance. This characteristic promotes a healthy atmosphere
Fire Performance Ratings:
UK Fire test by Warrington Fire Research:
Class 1 to BS476 Part 7
Class 0 to BS476 Part 6
Maintenance:
SonaSpray fc can be over-painted or applied with additional coats of SonaSpray. Small damage can be repaired by hand. If SonaSpray fc is disturbed or damaged so that fibre is released into the atmosphere, the resulting contamination is harmless. Maintenance work can be undertaken while the building is occupied. Please refer to COSHH data for detailed product analysis. |
