The Different Ways Warm Weather Can Affect Your Flat Roof

June 16 2020 0comment

The Different Ways Warm Weather Can Affect Your Flat Roof

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Most flat roof building owners tend to be more concerned about extreme storms, strong winds, and snowy winters when dealing with roof damage. Very few regard warm weather as a potential problem for their roofs. The truth is that summer and warm weather can have a negative impact on flat roofs, especially those made of bitumen and felt. We have prepared a list of some of the common problems warm weather can bring on your flat roof. Please read on.


  1. Thermal Cycles

During the summer, there are frequent changes in temperatures throughout the day and night which can force your flat roof to expand and contract repeatedly. This can lead to cracks that can allow water to penetrate the roof. This problem is mostly experienced in roofs with traditional materials such as felt. It’s recommended that you use modern waterproof materials such as single-ply PVC membrane roofing which can resist the effects of thermal cycles.


  1. Blistering Issues

When water penetrates through cracks and holes in the roof, it will expand when heated by the high temperatures. This expansion will then lift the felt from the roof, causing bubbles or blisters to appear on these areas. If this blistering will not be addressed on time, it can cause bigger problems that could force you to replace the roof. Do not ignore any signs of blistering as they can cause a bigger issue rapidly.


  1. Moisture Damage

Moisture build-up on your roof can cause fungal growth which can damage flashing. Damaged flashing can compromise the drainage and the health of the roof. The more the sunlight hours, the higher the acceleration of the fungal growth; hence the faster the damage. You need to check your roof regularly and arrange for necessary repairs of damaged flashing.


  1. Pooled Water

Poor drainage of your flat roof makes it vulnerable to water pooling. This on its own can cause extensive damage to your property, especially when left for more than three days. To prevent this problem from happening, ensure your downspouts and gutters are functioning properly. You also need to clear any leaves and other debris regularly, especially after a change in weather.


  1. Improper Installation

If the initial installation of your roof was improper, heat-related issues may be much worse. For instance, if the roof was constructed with inferior structural materials, it may shrink in the centre, encouraging water pooling. This could result in leakage hence blistering. If this is the case with your roof, you may have to replace the whole roof. It’s important that you consult an experienced and certified contractor to oversee the installation process and ensure everything is done right. 

The Bottom Line

Damage to flat roofs can be caused by a number of factors, summer heat being one of them. Most of these issues start as minor problems and progress to getting worse. Regular inspection is essential to ensure the problems are identified and fixed as soon as possible. It’s important to consider your safety when carrying out the inspection. Ensure to instal the relevant fall protection such as a demarcation barrier before allowing anyone on the roof.

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