Winter weather can put a roof under serious stress. Cold temperatures, heavy rain, strong winds, and ice can all cause leaks. Here we help you understand the common reasons for winter roof leaks:
1. Freeze-Thaw Cycles
Water can seep into small cracks in the roofing materials during cold weather. When temperatures drop, the water freezes and expands, enlarging these cracks. Repeated freezing and thawing over the winter can gradually make the damage worse, eventually allowing water to penetrate the roof.
2. Heavy Rainfall
Intense and heavy rainfall can test a roof’s ability to shed water. If tiles, slates, or shingles are worn or gaps exist in the roofing, rainwater may seep underneath.
3. Storm Damage
Strong winter winds and storms can lift your roofing materials, break tiles, and damage the seals.
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4. Blocked Gutters
Gutters can become clogged with leaves or moss that then prevents water from draining properly. Blocked gutters can cause water to overflow onto the roof edges, eventually leading to leaks inside the home.
5. Condensation Issues
Poor ventilation in roof spaces means warm, moist air from inside the house condenses on cold surfaces. Condensation can mimic leaks, causing damp patches, mould growth, and potential decay of timber if it is not addressed.
6. Old Materials
Over time, roofing materials naturally degrade. Tiles, slates, flashing, and sealants lose effectiveness, making roofs more vulnerable. Old materials may crack, warp, or crumble, especially under winter conditions.
