5 Things That Can Cause A Leak On A Tile Roof
Tile roofs are loved for their durability, low maintenance, and long life. Over time, though, leaks can develop. Knowing the common culprits can help you quickly troubleshoot the problem and get it repaired.
1. Failed Fasteners
Tile roofs are hung on wood strips called battens and then nailed into place. Battens must have gaps every few feet to allow the drainage of any water that seeps beneath the tiles. If the battens are installed without gaps, then water will pool up slope of the wood strip, and it may eventually leak into the home. Popped nails can also lead to leaks, especially if it results in a loose or missing tile.
2. Damaged Flashing
Flashing is used to create a waterproof seal on any part of the roof where there is a seam. There is flashing around chimneys, vents, and sometimes in the valleys of a roof where two roof angles meet. Flashing can warp or corrode, usually as a result of aging or damages from a storm. It also may not last as long as the roof. If the flashing looks corroded, bent, or otherwise in ill repair, it could be the cause of the roof leak.
3. Loose Capping Tiles
Capping tiles are those placed along the ridges of the roof. The longer the ridge line or the more hips on the roof, the more capping tiles. These tiles are often exposed to the most weathering, taking the full force of wind with minimal support. So, over time, they can loosen and slip to the side. In some cases they come off completely. Water is then able to run underneath all the tiles down slope of the missing capping tile, resulting in a leak.
4. Roof Debris
Any type of debris that collects on a roof, including leaves and twigs, increases the chances of a roof leak. Debris creates a dam on the roof, which traps water behind it so the moisture fails to flow off the slope. This moisture then seeps underneath the tiles, resulting in a leak. Debris in gutters can cause this just as readily as debris sitting on the tile roof.
5. Membrane Issues
There is a waterproof membrane beneath the roof tiles, which acts as the final line of defense in the event moisture does seep beneath the tiles. Membranes can become damaged for many reasons, but age and improper tile repair or replacement are the most common culprits. A tear or hole in the membrane increases the chances of leak formation.
If your tile roof is leaking, contact a tile roofing contractor in your area for more help.