Use a measuring tape to determine the proper height and width of wall area you want to cover. Based on these measurements, cut the batting to size using heavy-duty scissors. An excellent range of height for a felt activity wall is 48” to 60”.
After the batting has been cut to size, add spray adhesive directly to the center of the wall area. Let it set up for two minutes before attaching batting.
Start the first run of batting in the center of the wall, as it will help ensure symmetrical seams.
When all the pieces of batting are properly positioned along wall, use heavy-duty scissors to trim the bottom and the side edges of batting. Leave a 1/2” of exposed wall all the way around. This exposed area will later be covered with fabric, resulting in a crown/frame effect in which the edges of the walls become slightly rounded by the batting.
Based on the width and height of the wall, cut the felt to size, “railroad” style. In other words, roll the felt out width-wise rather than height-wise so you'll create horizontal pieces rather than vertical pieces. Starting at the top, use a glue gun to secure the felt to the wall in the 1/2” exposed frame area.