Waking up a tired deck begins with an assessment of its current condition. First, examine plainly visible components for signs of loose fasteners, cracked members, and wood rot. Follow up by checking for those same red flags along the posts, joists, and beams on the underside of the deck. Inspect the stairs, if applicable, and, finally, take a look at the footings. Here, cracked or crumbling concrete, depending on severity, may mean trouble. When in doubt, call a pro.