Why roof maintenance matters
The UK's wet climate means roofs deteriorate faster than in many other countries. A cracked tile or failed flashing left unrepaired allows water to enter the roof structure. Wet timbers rot, insulation becomes waterlogged, and eventually water penetrates the ceiling. A £200 tile repair ignored for two years can become a £5,000 structural timber replacement.
Annual checks from the ground
Use binoculars from the ground to check: missing, cracked, or slipped tiles or slates; sagging or uneven ridge line; missing or crumbling mortar on ridge tiles; damaged or missing flashing around chimneys and dormers; cracked, sagging, or overflowing gutters; and moss or lichen growth (which can hold moisture against tiles and cause deterioration).
Inside the loft: what to look for
Inspect your loft space after heavy rain. Look for: damp patches or staining on rafters and timbers; daylight visible through the roof; gaps around roof vents or pipes; and condensation on the underside of the felt. Early signs of a leak are much cheaper to fix than discovering the problem after sustained water ingress.
Gutters: the most neglected maintenance item
Blocked gutters overflow water against the house wall, causing damp penetration and damage to fascias, soffits, and brickwork. Clean gutters at least once a year (twice if you have overhanging trees). Plastic guttering lasts 20–25 years before joints fail. A gutter inspection and clear costs £80–£200 for a typical semi-detached.