Construct a Soundproofing Walls using Super Soundproofing™ Resilient Channel and Acoustical Mat
The walls of most of the domestic buildings are constructed of Drywall (Sheetrock/Gypsum Board) that is firmly attached to both sides of a wood or metal stud frame. When sound waves hit one side of the wall it causes the drywall on that side to vibrate. Since there is no structure to block the sound waves, this vibration gets transmitted readily through the studwork to the drywall on the other side and then re-radiated. This results in the entry of annoying noise in to the room, causing troubles to people inside. In order to dampen the sound waves via walls, Super Soundproofing™ is offering you a solution. We suggest you to insert Resilient Channel between drywall and studwork to block the unwanted noise to make your living peaceful and quiet.
More about Resilient Channel
Resilient channel is a thin metal channel that is intelligently designed to substantially improve the sound insulation of drywall, sheetrock, plasterboard walls and ceilings. The channel effectively isolates drywall from the framing studwork, which results in the weakening of sound waves substantially.
Installation of resilient channel to the walls is an easy and effortless process. The channel, which measures about 1/2″ in thickness, provides you dramatic results when compared to similar products available in the market. The acoustic qualities of the channel can be improved by applying thin (1/8″) “ Super Soundproofing™ Absorbent Tape ” to the flange of the drywall mount.
Along with using resilient channel, we suggest you to use the following to enhance the acoustic of your walls.
- You can add an extra layer of drywall to the other side of the channel.
- You can opt for adding a layer of “Wonderboard” or “Duroc”, to the existing wall.
- You can use our Silencer “Mass Loaded” Barrier or Absorbent Mat to the existing wall.
- You can opt for mounting “Soundboard” (Celotex-sound deadening board) or “Homasote” to the channels before the drywall is attached. Make sure to comprehensively seal the edges of the panel for optimum results.
- You can prefer using natural cotton fiber as an alternative of fiberglass batting.
The resilient channels, which act as shock absorbers, typically add 3 to 5 (or more) Sound Transmission Class (STC) points to your existing wall or ceiling. However, in order to improve the acoustic qualities, you may need to invest on other construction materials and use some other technique. We suggest you to add an absorbent mat or barrier material to the wall space to provide an absorbent compartment to trap sound waves.
You may need to be utmost careful while selecting acoustically effective resilient channels other than hat channels, Z-channels and other lightweight metal furring systems. Even though these systems resemble resilient channels, they provide no acoustical benefits and are too rigid.
Resilient Channel Installation – Procedures to Follow
Make sure that you install the resilient channel as recommended by the manufacturer to gain maximum results. Read on to familiarize with resilient channel installation in your existing drywall.
At first, you need to remove the drywall or create large openings in the drywall panels to open up the wall and expose the dead air to the new wall covering. Then, apply absorbent mat of appropriate thickens inside the joints and studding. You can now screw the channel all over the strips using drywall screws. In this stage, make certain that the screws only penetrate the corrugated web of the resilient channel and do not come in contact with the resilient channel base support or furring strips. Do not over tight the screws as they may pull through the thin metal channel.
Now, attach the second layer of material (drywall) using appropriate longer screws. Make sure to offset the joints of the first layer and screw only into the first layer of material, not into the resilient channel.
After that, you can coat the new drywall panels with absorbent closed cell matting material to create an absorbent compartment to dampen sound waves. Make sure to apply the absorbent like wallpaper using contact cement and a roller. The thickness of material applied depends on the level of sound control desired. Now, in an open, studded wall, sound barrier material (MLV) is typically stapled to the studs.
Note for edge sealant – It is imperative to apply flexible acoustical caulking compound that is durable to all the edge perimeters after the installation of each layer to achieve optimum results.
Points to Consider While Installing Resilient Channel for Making Soundproofing Walls
Some of the tips that help to make the installation easy and effective are follows
- Resilient channel should be mounted at a right angle to the framing while installing on walls and ceilings. While using with walls, make sure to mount the channel with narrow flange along the bottom and the larger flange on the top. Make sure all the flanges are pointing in the same direction, i.e. up for walls.
- When fastening the drywall to the channels, mounting screws must be driven into the channels in-between the studs or joists. It is absolutely critical not to “short out” the resilient channels by screwing long screws into the studs behind them.
- While installing resilient channel, it should be held back from intersecting surfaces about ¼” on the side edges, and about 4-6″ from the top and bottom of the wall.
- The drywall attached to the channels also needs to be held back about ¼” from its intersecting corners. If the drywall panel edges are jammed against wall or ceiling panels, then they will tend to be ineffective.
- Before installing the channel for soundproofing walls, the edges of the drywall should be covered with neoprene vibration pads and sealed with caulk. It should be then taped and painted comprehensively. This provides a supporting base to mount drywall and install the resilient channel. For this purpose, you can use 2 of the 2″ pads per vertical sheet of drywall.
- The weight of the drywall will tend to crush the drywall edge down on the pad, making a gap. This gap should be sealed completely using flexible non-hardening caulk, “Backer Square” or Lead tape.
- Don’t allow the drywall sheets to set directly on the walls. Use vibration pads made of ribbed neoprene and cork to place under drywall sheets for support when used for walls. Caulk well. Stagger joints. Use a metal tape on underlying joints. Caulk again well.
- When installing the channel over a thicker absorbent mat (like 1″), don’t pull mounting screws down too tightly. This will deform the channel. Don’t break the covering paper of the drywall with the screw.
Remodeling a Typical Wall for Enhancing its Acoustic Qualities
How to remodel a typical wall for achieving soundproofing capabilities? Read on to get the answer.
- How to remodel a typical wall for average sound reduction – Apply Mass Loaded Vinyl (MLV) directly to the existing wall. (Two layers give you optimum results). Stapling will hold it temporarily in place. Now install at least one layer of 5/8″ firecode drywall over it. Tape off and paint your sound deadening wall.
- How to remodel a typical wall for even more sound reduction – Take drywall off on one side. Make certain that the electrical boxes inside is caulked well. Glue our 1/4″ acoustical mat to the opposite of inside wall.
For achieving average as well as advanced soundproofing of the remodeled wall, you need to staple “Silencer” flooring mat (MLV) to the joints/studs completely. Seams should be sealed with caulk or tape. You can use “Backer Square” to fill the gap and reduce the amount of caulk. You can also opt for additional soundproofing material to enhance the sound control ability of the wall such as adhering additional panels together with “Green Glue” which increases the mass of the wall. The visco-elastic glue also acts as a sound dampener as well. Be sure to cover the entire wall with no gaps left open.
All drywall joints should be finished with traditional jointing methods and plaster covered before painting/decorating the deadening wall in the normal manner. Do not heavily “mud” the gaps. (Tape and Paint). Protruding screws may be lightly tapped with a hammer and carefully tightened some more by hand.
Resilient Channel: Part/Number: “RC-1″
Dimensions: Steel Gauge : .018
Weight : approx. 0.37Kg/m
Length : Cut for UPS shipping: ( 6′)
Availability: Manufactured by “Unimast”. Check with them or your local Builders Supply for availability in 12′ length, otherwise order from us. (We cut to 6′ for UPS shipping:). We also have RC-2 and DWFC.
When installed beneath an existing ceiling with soundproofing absorbent material applied as above, improvements in reducing both airborne noise and impact sound would normally be well in excess of 300%. This means a STC in excess of 50: (Loud shouting can€™t be heard). Fire resistance would be about 1 hour.
TIPS for Walls:
Don’t allow the drywall sheets to set directly on the floor. Use vibration pads made of ribbed neoprene and cork to place under drywall sheets for support when used for walls. Caulk well. Stagger joints. Use metal tape on underlying joints. Caulk well. Don’t screw baseboard onto both the pads and the wall base sill.
Approach us at the Earliest with Queries, Concerns and Acoustic Challenges
Along with providing you superior range and cost-effective solutions for soundproofing walls, we also give you valuable insights on several categories of products and their installation technique. (The EPA Manual has more information on this and other techniques).
You can call us anytime or visit our page to see our prices, cost information, availability and free consulting! You can reach us over 760-752-3030.
NEW! Super Soundproofing™ is proud to offer you Sound Control Clips with DWFC that are easier to install than resilient channel. Call us to know more about the new SuperSound Clips and DWFC.