Article: Purchase an adhesive spray online or at an arts and crafts store. Lay the acoustic panels on the floor, bumpy side down. Spray the back of the panels in a back and forth motion, but leave the edges of the foam unsprayed to make it easier to cut later.  If you have foam panels that came with adhesive on the back, you can skip this step. You can purchase adhesive spray online or at an arts and crafts store. Gluing cardboard to the back of the foam will make it easier for the Command strips to stick to the panels. Press and hold the foam against the cardboard for 30 seconds. Using cardboard will make your acoustic foam reusable and will prevent damage to your wall. Leave the foam in a well-ventilated area for 1 or 2 hours, then check to make sure the foam is dry. The foam should remain firm on the cardboard and shouldn’t shift around when you touch it. You can put the foam in front of a window or fan to quicken the drying process. Do not cut into the foam itself. Position your scissors and cut along the inside edge cardboard. It’s okay if the foam overlaps the cardboard. No cardboard should be visible when looking at the bumpy side of the foam panels. Command strips are small rectangles that have an easily removable adhesive. Remove the paper tab on the Command strips and place 1 in each corner on the backside of the foam panel. Press against the Command strip for 10 seconds to make sure it stays attached to the cardboard. The Command strip should be stuck to the cardboard, not to the foam. Remove the other paper tab to reveal the adhesive, then carefully line up your acoustic foam panel in the corner of the area that you drew before. Press the back side of the foam against the wall and hold it for 30 seconds. This should secure it in place. Continue repeating the steps to apply a row of acoustic foam on your wall. Continue adding more pieces of the foam until you fill up the desired space. Once all the pieces have been installed, use an eraser to remove the pencil marks that you created. Alternate the direction of the pattern on the acoustic panels for maximum effectiveness and visual appeal.
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Spray the backside of the foam pieces with adhesive spray. Press the foam against a piece of cardboard, adhesive side down. Let the glue dry. Cut off the excess cardboard around the foam. Put Command strips on the backside of the panels. Press the acoustic foam against the wall. Finish installing the remaining panels.