Why Some Flat Roof Leaks Only Happen at 3 a.m.

As a homeowner, you may experience confusion when your flat roof leaks at night. It happens during the cold winter hours. At first, it is impossible to understand these signals. You can’t crack the code. However, consulting with experienced roofers can solve the issue. This blog discusses some of the reasons.

Temperature drops and condensation effects

• Thermal contraction and material stress: In Toronto winters, temperatures drop rapidly during nighttime. Materials that make the flat roofs shrink slightly. This opens minuscule gaps in the seams. Water slips through it and leads to leakage.

• Surface cooling: Warm air from indoors rises above the roof. It meets the roof’s cold layers. Moisture condenses at those points. This leads to a drip. This phenomenon confuses you. You can tackle it by consulting with a certified flat roof company Toronto.

Slow drainage and ice formation

• Ponding water with delayed seepage: Rains form shallow poodles in several flat roofs. During late hours, water from these poodles finds weak membrane zones. This water leaks through these membranes. You can solve this issue by contacting top-rated flat roofing companies in Toronto.

• Ice formation with micro-cracks: During the winter months, cold water refreezes during nighttime. This forms ice. This ice can expand through microcracks and melt due to the building heat. The ice melts and leaks through the roof.

Blockages in roof drains

There are chances of drain blockages in your roof when you don’t maintain them. Leaves and debris can block these drains. Water accumulates silently over a period. You don’t notice this phenomenon. Blockages encourage water to find other ways to flow. This leads to leakages through weak membrane parts. Hence, it is an intelligent step to call experienced roofers to address this issue.

Shutdown of the HVAC system

One of the crucial points that many homeowners miss is shutting down the HVAC unit during nighttime. There are pressure changes inside the building. This allows the trapped moisture to escape upward. These appear as roof leaks when the water drips from above.

When roof materials age

There is no denying that aging roof materials are among the primary reasons for this issue. Old materials create fissures and cracks in various roof layers. Some of these cracks are so tiny that you don’t notice them. Hiring the services of expert roofers is the correct way to solve these problems.

Poor flashing installation

In some cases, poor flashing installation can lead to roof leakage during the night hours. Overnight cooling can stiffen roof materials. Water gradually enters behind the walls. This leads to leaks during late-night hours. In these cases, the priority should be to consult with experienced professionals with roofing expertise.