Drill holes

For a masonry wall, drill holes using a masonry bit sized for your masonry shields. On some walls, it is easier to drill through brick; on others, mortar. Work slowly and take breaks to avoid overheating the bit and the drill. On tough surfaces, use a hammer drill. Check that the holes are at least 1⁄4 inch deeper than the shield.

More:  where to start and what you'll need