How to apply Noxudol sound damping
Our sound damping materials Noxudol 3100 and Noxudol 3101 are easy to apply and gives an effective sound-absorbing effect. Below follows an step by step guide on how to apply Noxudol sound damping material.
To start off with a carefully cleaned surface is important for the final result. Clean the surface thoroughly with a degreaser and make sure it is completely free from dirt and fat, or it may affect the adhesion adversely.
Mask surrounding surfaces which are not supposed to be treated. We recommend masking properly as the material is difficult to remove when dry.
Dry the surface to be treated properly before application. Blend the material in the can before usage until the mass is evenly distributed. Untreated surfaces of steel in moist environment and amphoteric metal surfaces such as unalloyed aluminium, zinc etc. which can react with bases must be primed before treatment to ensure good adhesion.
Noxudol 3100/3101 is easily applied with spray gun or high-pressure pump. When using a high- pressure pump for application, it is important to switch off the pressure when not spraying. Max. interruption with pressure on is 1 minute. After switching off, the pressure in the hose must also be let out by the pistol gun; otherwise the material will pack in the hose and be very difficult to remove. The pistol gun ought to be front mounted, the hose reasonably wide and the nozzle as large as possible. To achieve an effective sound damping, apply a smooth layer of 1,0 – 2,5 mm dry film, depending on the basis.
The drying time at normal room temperature is 6-8 hours depending on the film thickness. At lower temperatures or high humidity the drying time will increase considerably.
The product sets in two steps. First the water evaporates, and then a chemical hardening takes place during the next 7-14 days, depending on the temperature. After the first step, the evaporation, the film is dry, manageable and already has a sound damping effect of around 80%. This effect increases during the chemical hardening. Only after the film has hardened (7-14 days) Noxudol 3100/3101 is water and frost resistant and can then also be top coated with most paint. A practical test has to be done first on a smaller area to make sure that the paste withstands the paint.