Improving Sound Isolation With Windows

Primary Suggestion: Mass and Damping Window Plug

Here's what you will need:

• 3/4" MDF
• Green Glue Compound (1 tube per 16 square feet)
• 1" or 1 1/4" screws to screw the two layers of 3/4" MDF together
• 1x framing material to lock window plug in place
• Option: Add cabinet handles so you can remove the window plug with ease.
• Note: Alterations in the design of the window plug can be made. Different thicknesses of MDF or replacing the Green Glue Compound with 1 or 2 LB MLV is possible.

Cost: Estimated at about $50 for all materials plus the cost of labor.

Secondary Suggestion: Add Second Window To Existing Frame

Here's what you will need:

• Another window that matches the existing window
• Acoustical sealant to seal the perimeter of the new window

Cost: Depends largely on window size and market value. Double glazed windows are strongly suggested.

Tertiary Suggestion: Replace Low Performing Window With Double Glazed Window

Here's what you will need:

• New double glazed window
• Acoustical sealant to seal the perimeter of the new window

Cost: Depends largely on window size and market value. Cost of labor and possible requirement of demolition/replacement of exterior finish can increase costs considerably.

DO NOT USE a foam window plug to isolate sound. They simply are not effective.