Wipe down the brick surface with a damp cloth and allow the brick surface to dry.
Bead construction adhesive or liquid nails to the back of the canvas using the applicator. Both products are available at building supply stores.
Hold the back of the canvas flat on the brick for three to five minutes, or until it is secure. Move your hands along the border of the canvas during that three to five minutes, and press it into the brick to stick it into place.
Wipe away any excess construction adhesive from the surface with a damp cloth.