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Major Causes Of Roof Leakage


During the rainy or wet seasons, roof leaks are a common occurrence. Roof leaks not only cause damage but can also destroy the property inside. Understanding the following significant causes of roof leakage will help you avoid leaks and the potential damage they can cause. 


Roofing that has neared its lifespan could end up leaking. Most roofing materials have a specific lifespan and once exceeded, the roof wears out causing a potential risk of leaking. Exposure to harsh weather conditions over time could also lead to a gradual destruction of the roofing materials and system.

Broken flashing

Flashings are thin pieces of metal placed beneath shingles and on the joints of the roof, put in place to create a waterproof barrier that can be hidden or exposed. Broken flashing increases the risks for the roof of large cracks developing. Large cracks in the ceiling play a major role in roof leakage.

Broken shingles

The shingles comprise the outer layer of the roof. Broken shingles often occur as a result of strong winds or heavy rains. Once a shingle is cracked, broken or has become displaced the roof is exposed to leakage. Spotting displaced shingles on the roofing is easy as there will be different colored patches on the roof. You may even notice shingles are completely removed and end up scattered in the yard after heavy rains.

Improperly sealed valleys

Valleys are two planes where the roof comes together. It’s critical to properly seal the valleys when roofing. Poorly sealed valleys expose the roofs to leakage when rainwater is running down the roof. The wet spots that run along the seams of the roof are clear indicators of leaking around that area.

Broken roof vents

Roof vents are those tiny pipes that are used to expel excess moisture inside the building. A primary cause of damage in vents can be caused by broken flashing or roof decay.  You can easily spot broken roof vents by observing dark spots around the area of a leak.

Clogged gutters

Gutters are meant to assist rainwater to fall down the roof.  If the drains are clogged, water easily collects and the collected pools of water later seep through cracks causing leaking.  The primary cause of a jammed gutter is due to the accumulation of leaves and other materials. You can regularly check your gutter system to identify potential clogs and clear them if you notice that water is not flowing.

Faulty skylights

There are two significant ways of having defective skylights involving measuring and fitting.  Skylights that are improperly installed or have decayed insulation along the skylight edges can be a serious problem. When you notice wet spots or have to place drip buckets along skylights, then you likely have a problem you need to address.

Ice dam build

Build up of an ice ridge prevents melted snow from draining off. The melted ice sitting on the roof causes damage to the roof and the combined weight of the ice build-up gradually destroys the roof.

Faulty chimneys

Wear and tear around the mortared area around the top of the chimney or holes around mortared joints, indicate a defective chimney. The chimney can play a key role in roof leaks but thankfully, it is easy to spot and fix faulty chimneys.
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