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Genesis Acoustic Products

Made in South Africa

We Deliver Nationally

Flexible Noise Barrier (FNB)

  • This mass loaded vinyl is suitable for structural soundproofing purposes
  • Only 3mm thick but with an STC 26
  • Roll width: 1.2m
  • Available in full rolls of 5m x 1.2
  • Ideal for the soundproofing of drywalls, ceilings & timber floors
  • Can also be used to soundproof with many other problematic noises

Flexible Noise Barrier

Flexible Noise Barrier (FNB)

This product is designed to be used inside a structure to increase the overall sound transmission loss of the structure for example:

> Drywalls:

It can be used on one side of the stud & track or on both sides of the stud & track for even higher sound isolation.

We frequently use the product to acoustically treat existing drywalls. In this instance, add a layer of FNB to the drywall & then add a layer of 12mm thick Genesis acoustic board, which can then be skimmed, primed & painted to the desired finish. Don't forget to caulk the gaps in the corners closed with Green Glue acoustic sealant.  You've only added 15mm to the wall thickness inside the room, which small enough to never even be noticed. This is a perfect solution for the soundproofing of the drywalls in offices, boardrooms & video conferencing rooms. A single layer of Genesis board & FNB will provide suitable levels of confidentiality & prevent the details of private conversations being overheard. (It's best to request a member of our team to advise you on all aspects of soundproofing, as sound can take multple paths)

For installations such as recording studios, post production & home theatre rooms etc. the same approach can be followed on both sides of the drywall, for a broad frequency soundproofing solution.

> Ceilings: 

When installing a new ceiling first fix a layer of FNB underneath the timber framing with drywall screws or a staple gun, then fix a layer of 9mm or 12mm Genesis acoustic board in place (the thicker & heavier the better). Finish caulking the gaps in the corners closed with Green Glue acoustic sealant then skimming, primimg & painting.

When there is already an existing ceiling in place, install a layer of Genesis Duo Batts over the ceiling. Duo batts consist of a layer of Genesis acoustic insulation bonded to FNB with a overlap on two sides to close all gaps.

> Timber Floors:

First apply Iso tape to all your beams, then fix a layer of 15mm thick Genesis acoustic board, then loose lay FNB to cover the floor, followed by another layer of 15mm thick Genesis acoustic board. The same priciple will apply if there is already an existing shutterply or pine floor. It's a good idea to cover the floor with Genesis rubber crumb acoustic underlay, this will help to isolate from structural vibration caused by footsteps, movement of furniture etc. Our rubber crumb underlay is available in a 3mm thickness suitable for wooden laminate floors and a 6mm thickness suitable for stretch carpets.

> Other applications:

FNB can also be used for the soundproofing of many other noise problems e.g. generators, machine housings, the floor of cars, trucks, buses, boats engine compartments, pool pumps etc.

> Finish: 

FNB is not sold for its goods looks, it is normally used where it's not seen - the acoustic benefit is just heard. It is easily scuffed & being black will quickly show up dirt. However for those unventional applications when it will be seen it can be painted, first with an undercoat of universal primer then with a finishing coat of whatever paint is chosen as a finish. A perfect example of this, is using the FNB to soundproof a hollow core door. First stick the FNB to the door with contact adhesive, then follow the procedure described above for the painting. Rather install the FNB of the side of the door that opens away from the frame, as otherwise your door will not close properly unless you adjust all your hinges.

> Tips:

FNB is relatively soft & flexible, it's possible that if insuffucient screws or staples are used it could tear due to it's weight, so be sure to use enough. Test a small area first, as what is enough will depnd on whether the product is being used vertically, horizontally & the spacing between framing etc. If you use pop-rivets get the ones with the built in washer style head. Use washers for drywall screws. FNB can easily be cut with a sharp blade.

FNB is heavy, it's easier to use it in smaller pieces & butt join or overlap them then to try use very big pieces. It's often wise to work in a team of two per piece of FNB. Make sure you have a trolly if you'll be carrying rolls onto site.


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