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How To Install Resilient Sound Isolation Clips

~1 MB Download a printable version of this guide here
~495 KB Download a short version of this guide here

Specified Fasteners

Wood Framing Steel Framing
Flat Head, Coarse Thread Screw Pan Head, Fine Thread, Self Tapping Type S Screw
GenieClip: #8 x 2 1/2" GenieClip: #8, #10, or #12 x 1 5/8"
Green Glue Clip: #8 x 2 1/2" Green Glue Clip: #8 x 1 5/8"

 

Two Possible Clip Layout Patterns

 

Standard Layout

Following a standard layout pattern is the quickest and simplest way to install clips. Estimating is easier because of the consistent spacing of each clip across a wall or ceiling. This standard spacing will also reduce the number of clips required. Most installers choose this method to save time, money, and to keep the process simple for installers unfamiliar with installing resilient sound clips.

Each perimeter stud will have a clip installed within 6" of the finished ceiling height and within 3" of the finished floor. The remaining clips on each stud should be a maximum of 24" on center from one another when installing 1 or 2 layers of drywall. This measurement will change to a maximum span of 16" if installing 3 layers of drywall. Each interior stud, every 48", will have the same clip pattern installed as the perimeter studs. Refer to the image to the right.

standard

Staggered Layout

The staggered layout pattern is a more complicated option for installing resilient sound clips. More clips will be used, roughly 10% more than the standard layout pattern, and it will take significantly longer to install the clips in this pattern if installing on a large project. Field tests have been conducted showing as much as a 5dB loss improvement in some frequencies with the staggered layout pattern.

Each perimeter stud will have a clip installed within 6" of the finished ceiling height and within 3" of the finished floor. The remaining clips on each stud should be a maximum of 24" on center from one another when installing 1 or 2 layers of drywall. This measurement will change to a maximum span of 16" on center if installing 3 layers of drywall. The top row of clips will be spaced 48" on center from the first perimeter stud. The next clip for each subsequent row will shift 16" to the left of the row above. This pattern will require some clips near the perimeter studs to be installed within the usual 48" on center span. Refer to the image to the right.

staggered

Ceiling and Wall Assembly

Figure A:

Installation of the ceiling clip system and ceiling drywall before working on the wall is recommended. After installing the ceiling drywall, you will caulk the gap between the ceiling drywall and the wall framing. This will reduce sound transfer and create a fire stop which will limit flame spread behind your wall to the floor above.

 

Figure B:

The drywall screw should enter the furring hat channel close to the center of the channel. The length of the drywall screw should not penetrate the resilient clip. If you do come in contact with the clip, then the strength of the clip will keep the screw from penetrating the clip.

 

Figure C:

The bottom row of clips should be installed within 3" of the finished floor to allow for enough space to attach the baseboard. The baseboard can be finish nailed into the furring hat channel. Applying a thin bead of adhesive or caulk to the back of the baseboard before attaching the baseboard will help increase the hold strength of the finish nail. The remaining gap beneath the drywall should be caulked with an acoustical caulk.

Dealing With Common Obstacles

 

Doors and Windows:

Furring hat channel should terminate flush with the framed opening of each door and window. A header comprised of two clips and a short piece of channel should be installed above each door. A header and footer comprised of two clips and a short piece of channel should be installed below each window. If the window exceeds 4' in width then extra clips will be required.

 

Vents and Openings:

Furring hat channel cannot be installed over any vent or opening in your wall or ceiling. Similarly to dealing with windows and doors, the lost connection of furring hat channel will need to be substituted with a short piece installed to either side of the opening. This will increase stability around the opening.

 

   

Perimeter Clips:

As noted above, resilient sound clips must be installed within 6" of the perimeter of each wall and ceiling. It is not uncommon for clip installers to have to add a stud or other framing member to meet this requirement. Keeping the perimeter clips within 6" of each wall and ceiling will increase stability for the installation of drywall.

 

Extending Outlet Boxes:

A simple way to extend an outlet box to become flush with the drywall is to use a 2" x 4" block attached to the side of the wall stud or ceiling joist. Please note that this block should not come in contact with the back of the drywall. The outlet box is then attached to the block at a distance that will allow the box to become flush with the surface of the drywall. An additional extension box can be used if several layers of drywall are installed.

Installing the Furring Hat Channel

Installation of the furring hat channel into the resilient sound clip does not require any screws. Start by inserting the furring hat channel into one side of the clip. Then, using your hands, compress the other side of the furring hat channel and push the channel in place so that both sides of the channel are locked into the resilient sound clip. The furring hat channel will remain in place regardless of the weight of the drywall installed on the channel. The gauge of channel preferred is 25 gauge for both resiliency and ease of installation. Furring hat channel is typically easy to find locally, but can also be purchased online from our store in lengths of 6'. Click here to view the product page.

Splicing the Furring Hat Channel

You will need to splice two pieces of furring hat channel together when the length of the channel cannot span the entire wall or ceiling. The two pieces of channel that you splice together will need to overlap by a minimum of 6". This splice needs to occur between two resilient sound clips because the clips are not designed to hold two pieces of channel. No additional clips are needed near the splice. Install two pan head steel stud framing screws on both sides of the channel to provide a stable splice between each piece of channel,

Drywall Installation

Drywall is typically installed perpendicular to the studs of a wall or the joists of a ceiling. Keeping with this concept, the drywall will need to be installed perpendicular to the newly attached furring hat channel. When installing drywall on a ceiling or wall, a 1/4" gap needs to be maintained around the entire perimeter. This reduces flanking to adjacent walls, ceilings, and the floor. Using a temporary shim along the floor and then remove the shims after all the screws are in place. Any gap that remains will need to be caulked with Green Glue Sealant to eliminate sound transfer through the gap and to provide a flexible connection between the adjacent walls. All drywall screws should be in installed before the temporary floor shims are removed.

Important Tips To Remember

  • Clips should not exceed 48 inches on center from joist to joist or stud to stud.
  • Hat channel row spacing should not exceed 24 inches on center and generally should run perpendicular to the joists or studs.
  • You must seal the wall after you install the drywall to ensure the sound isolation integrity of your assembly. Use a product like Green Glue Sealant to seal the 1/8"-1/4" gap along the entire perimeter, as well as any electrical outlets or openings. If you are finishing your wall with a standard finish (i.e. paint, texture, wallpaper, tile, etc.), there is no need to caulk any non-perimeter drywall joints. Simply tape and mud them as normal. If you are finishing your wall in a non-conventional covering that does not require taping/mudding (i.e. fabric, acoustic panel or foam, etc.), then you must also caulk the drywall joints.
  • Mount each clip using the appropriate fasteners specified above. These can be purchased from any hardware store. Ensure that the screws are securely fastened, as to hold the clips in place, but be careful not to over-torque them, as this could result in decreased performance. For the GenieClip, you should be able to grab the clip and twist it side to side with a little effort.
  • We recommend using a chalk line to layout clips quicker and more accurately. Another option is to mark the appropriate clip spacing on the side of a piece of channel. Set the channel next to the stud that will receive clips and use the markings on the channel as a simple guide to show the height in which each clip will be installed on that stud.
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