Part of the Intelligent Insulation group

Metal Stud Walls

Installation Suggestions for Acoustiblok on Metal Stud Walls

Material Checklist

✓ RD350 Acoustiblok roll dispenser (ball bearing rollers allow for easy roll out and height adjustment. Recommended for use with Acoustiblok 60′ and 350’ Master size rolls.
✓ Screw gun with a magnetic tip
✓ Yellow Grease Pencil
✓ Box knives & Straight Edge
✓ Acoustigrip™ Tape (60m per roll). Requires approximately 1 roll of tape per 18m roll of Acoustiblok.
✓ Acoustiblok Acoustical Sound Sealant (310ml tubes). Installation requires approximately 2 tubes per 18m roll of Acoustiblok.
✓ Acoustiputty™ Acoustical Sealant Pads. Use 1 pad to seal the back of each electrical box or other wall penetrations.
✓ Self-tapping wafer head screws (1000/box) if using metal studs. Approximately 1 box per 50 linear metres of Acoustiblok. If using timber stud, the requirement is staples (min. 12mm) approximately 200 per 18 linear metres of Acoustiblok.

See our Accessories section for more details. (Please ask for more information if needed).

Installation Method Suggestions

  • If only one layer of Acoustiblok is used, install it on the source side – the side the sound originates.
  • Use a minimum of 12.5mm or 15mm thick drywall.
  • Space all power outlets so that they are not back to back (should be in different stud cavity to help isolate sound). Attach Acoustiputty pads to the back of the electrical boxes or other voids for a tight seal to further insulate the noise.
  • If in-wall speakers are used you must leave Acoustiblok loose enough in the wall cavity to provide enough clearance for the speaker back. The goal is to achieve an “airtight seal” over the structure.
  • Fill all cavities between the framework with a heavy duty open cell fibre cavity fill such as QuietFibre to the depth available.
  • Install Acoustiblok running horizontal, not vertical if possible. This will minimize the number of seams requiring sealing. If using vertical drops of material ensure overlaps are made over cavities to eliminate bulging over studs and bowing in the drywall finish.
  • Precut Acoustiblok. Measure total length (per wall) and identify section location. Cut full lengths when possible to minimize vertical seams. Any vertical seams must be centered on a stud. Always add 150mm to 300mm to the overall length to insure full length coverage.
  • Install bottom run first, and then work up. Overlapping the seams is advised with a minimum of 25mm to 50mm, as it ensures a good seal and it will prove to be the easiest method; however, this may cause a slight bow in the plaster board. This however can be greatly reduced by using resilient channels (horizontal bar / batten).
  • Apply Acoustiblok Acoustical Sound Sealant in the overlap area. Do not put any fasteners into the overlap area. The Acoustiblok 6mm Membrane can not be overlapped due to its thickness.
  • Ensure joints are clean and dry (use denatured alcohol if needed) before applying Acoustiblok Acoustical Sound Sealant and Acoustigrip Tape which must be used to properly seal all seams regardless of installation method.
  • Use self-tapping wafer head screws (300mm o/c).
  • Cut around all receptacles and other wall penetrations.
  • Caulk all possible air gaps (especially floor and ceiling joints) with Acoustiblok Acoustical Sound Sealant.
  • Tape all joints & edges with Acoustigrip Tape.
  • An airtight assembly is the goal.

For further help please call our technical team on 01622 840289


Acoustiblok is a very unique material. Duct tape, aluminium tape, regular silicone & most caulks will adhere initially, but may lose the bond in a few days, jeopardising the performance of your installation. Use Acoustiblok’s installation products to insure an airtight, long lasting, professional sound reduction installation.

Installing Acoustiblok on the interior side of an exterior wall requires attention to the vapor flow performance of the wall assembly. To provide adequate vapor flow the material seams should be overlapped. Use the Acoustiblok Acoustical Sound Sealant and spot apply it to the center of each wall cavity. Do not tape the seam or apply acoustical sealant along the bottom of the assembly. Do not put any fasteners within the overlapped area.

Install the resilient channel at approximately 600mm o/c perpendicular to the reverse studs over the Acoustiblok material. Use the resilient channel as the platform into which to screw the plaster board. Do not penetrate the Acoustiblok material with the screws. Use screws that are long enough to penetrate the plaster board and securely fix into the frame / channel only. Install the plaster board with a 2mm to 3mm gap so that it does not touch the floor, ceiling, or adjoining walls providing mechanical decoupling of the wall.

Always install the Acoustiblok Sound Isolation Material with the logo and U.L. printing visible. This allows for quick inspection and sign off from building inspectors and assurance to your clients that they have received a genuine Acoustiblok sound reduction treatment, not an inferior, non U.L. rated and acoustically untested product substitution.

Please note: These are suggestions only, derived from years of past usage and test results. They are not warranted or guaranteed in any way, neither written nor verbally.