April 16, 2018
Noise transmission problems arise mainly from floor/ceiling assemblies (complete structure between floor and ceiling of the above unit) and through the party walls, that is to say between the adjacent units. Noise problems associated with these assemblies come mainly from transmission of impact or airborne noises. The latest will be treated in this article and are caused by television, voice and music. These are noises that, when the unit is poorly soundproofed, disrupt the comfort of the occupants. But how do we measure these types of noises?
First, airborne noises come mainly from radio, television, voice, crying or cries of children. It is a vibratory airborne wave that vibrates the surfaces and structures of floors, ceilings, and walls. They spread through all the small openings in the building walls (around doors, ventilation grids, electrical outlets, etc.). Finally, where air can pass so can sound. It is therefore important to seal as much as possible all small openings to minimize the spread of airborne noise. Furthermore, the higher the mass of materials used in a building structure, the more they will contribute to reducing the airborne noise circulation.
In acoustics, there are two measurement units of airborne noises: STC (Sound Transmission Class), result of tests carried out under controlled laboratory conditions, and FSTC (Field Transmission class), result of tests carried out in the field. Laboratory tests results are generally higher than those performed on site. In terms of airborne noise, the National Building Code requires a minimum acoustic performance of FSTC 50. At this level, we are talking about an acceptable level of soundproofing. However, if your neighbor snores loudly, you may hear it! At FSTC 55, we start to be much more comfortable, however, the desired acoustic comfort is rather around FSTC 60.
AcoustiTECH specializes in acoustic solutions and offers the most effective solutions available for mitigating sound in multi-storey residential projects. Our partnership with Soprema & Fermacell allows us to expand our portfolio with efficient and diversified acoustic solutions. Our approach to sound-insulation is quite different than most as we ask questions about the nature of your building, your acoustic need or requirement and finally your budget. Once we have a better understanding of the big picture we simply provide "acoustical recipes" (options) which can allow you to save money, improve the sound quality of your building and/or even change the way you build. We back this up with a team of acoustic experts whom will help you reach your goals and rest easy regarding sound issues in your building. We are the reference when it comes to sound insulation of multi-storey buildings
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