A small roof leak rarely stays small. Left alone, water works its way into timbers, insulation and plaster — turning a £150 repair into a four-figure bill. The good news is that most leaks give you plenty of warning if you know where to look.
Start inside. Brown or yellow staining on ceilings and upstairs walls is the clearest sign that water is getting in. Check your loft on a bright day: any pinpricks of daylight through the roof, damp felt, or a musty smell mean moisture is present. Damp patches around the chimney breast are especially common and usually point to failed lead flashing.
Outside, look for slipped, cracked or missing tiles, particularly after a storm. Sagging areas, moss build-up holding moisture against the tiles, and blocked or overflowing gutters all shorten the life of your roof. Flashing that has lifted around chimneys, valleys and roof windows is one of the most frequent causes of leaks we're called out to.
If you spot any of these, don't wait for the next downpour. A quick inspection now is far cheaper than repairing water-damaged ceilings later. Armstrong Roofing offers free quotes and a 24-hour emergency call-out for urgent leaks across the UK — we'll find the true source and make it watertight.
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