To prevent warping, cracking, or discoloration, choose a storage area with stable temperature and humidity levels. Aim for a temperature between 60-75°F (15-24°C) and a relative humidity of 40-50%. Avoid storing frames in areas prone to extreme temperature changes, such as attics or basements.

In wood frames use minimal pressure when installing diamond points or brads (Fig. 7). In metal frames, bond strips of mat board, or foam core to the edge of the backing rather then using springs clip (Figs. 8 & 9). Leave a little space to insure the art won't be pinched. Mold will not grow readily where there is good air circulation.

If you have a warped wood frame, you can often fix it by adding extra nails or staples to the canvas. This will help to hold the frame in place and prevent further warping. If the warp is severe, try clamping the canvas onto a board or flat surface.