16 Broadway Salem, MA 01970
PH: 978.745.6888
Fax: 978.745.8108

Feb 092012

The same noises that travel across walls also travel across floor/ ceiling assemblies between vertically adjacent spaces. There are also additional noises such as footfall and chairs being moved that can be bothersome, especially to those occupying the lower space. To combat these problem noises NRE has developed a portfolio of materials and constructions to build or improve the transmission loss of ceiling assemblies. These treatments are highly effective increasing the habitability of apartments, condos, homes and offices.
NRE TuffMass UL can be used in ceiling assemblies in much the same way that it is used in wall assemblies. This includes installing TuffMass-UL the upper or lower faces of the floor or roof joists behind a layer of drywall. For existing ceiling assemblies TuffMass UL can be added below the drywall and a second layer of drywall added to finish the installation. This treatment will be highly effective for speaking, A/V, and other airborne noises.
For highly effective reduction of structure-borne noise such as foot fall and furniture being moved you need to decouple the lower surface of the floor/ceiling assembly from the joists. This breaks the mechanical transmission path for noise that is radiated into the space below. Breaking this mechanical transmission path also greatly increases the transmission loss resulting in the lowest levels of airborne noise being transmitted into the space below.
Our RSIC-1 clips fasten to the bottom of the joists where their internal rubber element isolates a hat channel to which the drywall is fastened. The use of TuffMass-UL and Roxul AFB provides the lowest levels of noise being transmitted between the spaces.
In areas with drop ceilings NRE Ceiling Tile Treatments can be installed on top of the tiles to reduce noise coming into or out of these spaces. While standard ceiling tiles do a good job of absorbing noise in a room, they do little to reduce noise that travels into or out of the space. Noise travelling through standard ceiling tiles can be transmitted to floors above or over the top of walls and into adjacent spaces.


One of the most basic, yet highly effective treatments for reducing noise travelling across floor/ceiling assemblies is to add TuffMass-UL. The TuffMass-UL is stapled or screwed to the face of the joists and drywall attached over (under) it per standard practice.
As with all assemblies where a cavity is present between studs or joist the addition of Roxul AFB in the cavity is recommended.

For existing ceilings TuffMass UL can be added between the existing drywall and a second layer drywall. It is important to note that textured ceilings should be sanded first to provide a uniform surface for mounting.

Decoupling the lower drywall from the floor joists is critical in building the highest transmission loss ceiling assemblies. The additional mass of TuffMass-UL behind the drywall is recommended as is filling the cavities between joists with Roxul AFB.

Noise travels through drop ceilings to spaces on upper floors and even the same floor. This is because partition walls are often not sealed to the floor above and noise travels through these gaps into adjoining areas. A highly effective treatment for this common problem is the additional of our specially designed NRE Ceiling Tile Treatments over standard ceiling tiles. Available in 2’ x 2’ or 2’ x 4’ these panels are simply laid on top of existing ceiling tiles to increase the transmission loss of the drop ceiling.

*Before installing NRE Ceiling Tile Treatments reference the panel weights in the physical properties listing found products section to ensure your ceiling grid is capable of supporting the additional weight.