In Dallas, your patio pavement might need replacing if it's over 20 years old, has uneven sections that pose a tripping hazard, or shows signs of sinking which could indicate foundational or drainage issues. Cracks wider than 1/8 of an inch suggest ground shifting or installation problems, and persistent stains or discolorations may reveal water absorption issues. If you observe any of these conditions, it's wise to consider renovating your patio pavement to ensure safety and maintain your property's appeal.