Signs that your roof may need repair include: Leakage signs such as water stains, damage, or dripping on the ceiling or walls could indicate a roof leak. Cracked, loose or missing roof tiles. A sagging or uneven roofline could signify structural issues. Damaged or deteriorated flashing around chimneys, or separation from roof edges can lead to water penetration. The presence of moisture or mould in the attic can indicate roof leaks or inadequate ventilation.