Tiled roof leaks usually result from defects in the roofing, and so they typically persist in specific spots rather than covering the entire roof. You may wonder what sorts of flaws or issues can allow rainwater inside—several possibilities follow.
Chipped, cracked, and dislodged tiles provide a possible entry point for rainwater. On secure roofs, tiles accurately overlap, forming an even arrangement that guides water towards the guttering. However, broken and out-of-place tiles let rainwater underneath to damage beams, insulation, and ceiling plaster. If you can't find the same profile, shape, or colour tile as the existing ones, roofers may repair damaged units with an epoxy resin. They'll also rearrange any out of place tiles.
The flashing (the material that covers the perimeter of objects like chimneys and vents) provides another common leakage site. Sometimes the flashing can decay—for instance, metal might rust away and develop holes. Otherwise, the mortar that holds the flashing in place can crumble and deteriorate, allowing gaps in the connection between protuberances and the roof.
Blocked Gutters and Downpipes
Your leaky roof may arise from something relatively simple, such as blocked gutters. Once clogged with leaves and debris, water can overflow and seep underneath the eaves of your home. Simply by cleaning them out, the water will freely flow along the guttering and exit via the downpipes, where it won't create havoc.
Crumbled Cement Mortar
Sometimes the cement mortar that holds the ridge tiles in place along the top of the roof crumbles and decays, letting rainwater to enter between the tiles. To correct this, roofers will bed new mortar to seal the ridge caps and to block any leaks.
Manufacturers produce tile shapes and sizes with a particular roof pitch and angle in mind to drain rainwater effectively. Leaks can arise when a tile shape and size sits on a flatter roof than the recommended pitch. On such roofs, wind can blow rainwater underneath and in between the tiles. One solution involves laying sarking underneath the tiles. However, such a task involves significant work as it consists of lifting all the roof tiles and placing a blanket of aluminium foil underneath to waterproof the roof.
Some roofs can work efficiently with sarking covering specific areas of the roof that typically face the wind. This solution will reduce the amount of work and cost involved to fix the leakage problem. For more help addressing these issues, reach out to roofing services.