There are times when attaching plywood to brick is a necessity. For example, high winds from a hurricane or similar storm require boarding up the windows and the material around the window is brick. While attaching the plywood to the brick requires putting holes in the brick, the damage is less than potential damage that will result from broken windows if you avoid the use of plywood.
Measure the windows and add about three to four inches beyond the window edges at each side. Always leave a little extra measurement so that the plywood is cut accurately.
Cut the plywood to the appropriate size for the window measurements. Mark the measurements in pencil or draw a line in pencil along the appropriate measurements so that the wood is cut correctly. Since plywood is relatively thin, a basic table saw or similar saw is appropriate for cutting.
Measure about one to one-and-one-half inches from the edges of the plywood and mark the spot. Draw small circles in pencil along the edges spaced about 12 inches or so apart and on all sides of the plywood. Drill a hole through all of these markings.
Line up the plywood with the windows so that the plywood is covering the window and has the three to four inches on each side. Get a helper to hold the plywood up and then mark the holes with a pencil on the bricks surrounding the windows. Drill holes in the brick at the marked locations.
Cover the metal rods with epoxy or a similar strong adhesive. Make sure the epoxy is designed for all weather or exterior conditions before using it. Push the metal rod through the plywood and into the hole in the brick. Repeat for every hole in the plywood and brick. Allow the epoxy to dry. The plywood is attached to the brick.