Make acoustic panels for your recording studio or home theater

Step 4 Add the fiberglass retaining moulding

In order to maximize the effectiveness of the fiberglass, it is important that it "floats" away from the wall. To do this, install a moulding strip 2 inches in from the front edge on the inside of the frame. This will make the panel flush with the face of the frame. We found it necessary to glue and nail the strips, and then hold them with C-Clamps while the glue dried.

Unfortunately we did not take a picture of this step, but you can see the strips installed in the following photo.