Your Flat Roof and Hot Weather Damage

According to experts, commercial roofing systems can be a tad more challenging to care for compared to residential roofing systems thanks to their sheer size and lack of slope. However, these aren’t the only issues that you’ll need to worry about; in fact, the summer season can be a time to be concerned about your flat roof as well as the hot weather can easily damage its material as well.

Here’s how:

Flat Roof

Flashing Damage

Your commercial roof’s flashing is one of the important components that helps prevent the roof from suffering from water damage and unfortunately, the hot weather can easily damage this component. This is because if there is moisture on your roof, fungal growth can be accelerated by the sun’s heat, damaging your roof in the process. Therefore, if you’re looking to prevent your flashing from sustaining any damage through fungal growth, make sure that the commercial roof has adequate drainage.


When water penetrates your commercial roof’s felt via a crack in the material, it can easily expand due to the sun’s heat. This lifts the felt from the roof that it’s attached to, resulting in blisters and bubbles that can cause major issues for your roof. If caught early, you can have the affected sections replaced but if left unattended for an extended period of time, it’s best that you have a roof repair and replacement expert replace the roofing system instead.

Thermal Movement

The cycle of heating and cooling during the summer months can easily damage your flat roof. This is due to the expansion and contraction that allows water to penetrate your roofing system. With that in mind, if you’re looking to prevent this from occurring in the first place, don’t hesitate to install materials that are engineered to form a 100% watertight covering, such as single-ply PVC membranes.

Planning to have your flat roof replaced? Look no further than Sully Jones Roofing, the leading service providers to approach when it comes to commercial and residential roof replacement projects. Give us a call at (619) 444-0150 or fill out our contact form to get a free inspection. We serve homeowners in La Mesa, CA, and other nearby areas.