Why is your home’s roof leaking?

Roof leakages are not an uncommon sight in private estates especially in tropical estates that experience large rainfall throughout the year. However, to surmise that your roof leaks due to heavy rain would be an oversimplification of the issue and would limit your understanding of the matter. As such, to bridge the gap, we have written this article to explain the factors and events that lead to a roof leakage. By understanding this process, you will be better equipped to prevent or remedy water leakages from your roof.

How do roof leakages occur

At the time of its construction, your roof would have contained some form of water resistant or waterproofing systems. This would come both in the form of materials used as well as the handiwork of the construction. As such, for new houses, your roof should be fairly safe from potential water leakages. However, depending on the quality of materials and work done, its resistance against water will deteriorate variably over time.

While wear and tear over time is unavoidable and can only be addressed through roof maintenance, there are other factors that speed up deterioration or the formation of leaks.

Physical Damage & Impact

Assuming that your country or area does not experience hail or exceptionally strong wind, then the next form of natural physical damage to your roof could come in the form of falling branches. During a storm, tree branches or other debris might be swept off and sent flying down onto your roof. Over time, the repeated impact from debris could break your roof’s shingles or loosen other components.

Once the upper layer of your materials is broken, gaps then appear for water to quickly enter into the mid layer of your roof. At this point, water would be trapped in your home’s infrastructure, free to move on.


Ponding refers to the formation of bodies of water in an area of your roof. When this happens, tremendous pressure is placed on whichever existing waterproofing system your roof uses as it has to repel against all water molecules that are in contact above it. Given sufficient time, water from ponding will penetrate your roof’s surface despite a lack of obvious gap or hole.

Why do ponds form? The answer to that is simply that water on your roof would have had no other path to flow through. In which case, it stagnates and accumulates in one spot, allowing the pond to form. A chief culprit of ponding lies in choked gutters or cluttered paths.

All roofs have gutters that help to collect rainwater from your roof and have it ushered away. However, fallen leaves may land on these gutters, causing them to choke up, not unlike the formation of a dam. Another possibility could be leaves or broken shingles clogging up pathways on your roof. In which case, water will not eb able to flow off, allowing ponds to form again.

Restoring your roof’s waterproofing system

If you spot water leakages in your home or suspect that your roof is leaking, then immediately contact a waterproofing contractor Singapore firm to conduct a full assessment and repair works.