Flat Roof Rot: What Causes It and How Can You Prevent It?

The roofing system is one of the most integral parts of a commercial building, which is why it must be regularly maintained. There’s one flat roof problem every property owner must watch out for, and that’s rot. It breaks down the roof’s materials and compromises the decking. It is a result of a wood-eating fungus, which makes the structure look dry and crumbly. 

In today’s post, Earl W. Johnston Roofing, LLC explains the common causes of flat roof rot and provides tips on how you can prevent it from occurring.

Roof Rot Causes and First Signs

Flat roof rot is caused by excess moisture brought about by a poorly ventilated attic. The lack of ventilation causes the wooden components of your roof to be exposed to moisture. It’s important to note that it only takes a 20% moisture level for rot to form and spread throughout the wood’s surrounding fibers. Other causes of moisture-related roof rot include clogged gutters and downspouts, damaged roof membranes or shingles and an inadequate flat roof slope.

For your commercial roof to remain in great shape, keep an eye out on the first warning signs of flat roof rot. If you notice any of these, it’s best to get in touch with a roof repair specialist as soon as possible:

• Sagging
• Cracked seals around the chimney, vent pipes, and other parts of your roof
• Faded color on the roof fascia
• Water stains or streaks on your ceiling and interior walls

How to Prevent Roof Rot

The following are some preventative measures you should consider to keep your flat roof safe from the damaging effects of rot:

• Schedule a roof inspection at least twice a year. By having it examined by your trusted roofer, you can identify problems early on.
• Invest in a good ventilation system. This way, your roof can “breathe” by allowing air to circulate inside your attic and keep moisture from accumulating.
• Get rid of roof debris as soon as possible, as it may clog your gutters and downspouts and keep water from flowing away from your property.
• Repair cracked or damaged roof membranes or shingles promptly to limit moisture exposure.

When it comes to roof work, be sure to trust only the professionals. Earl W. Johnston Roofing offers top-notch quality services, including roof cleaning and more. Call us today at (954) 989-7794 or fill out our contact form to request a quote. We proudly serve Pembroke Pines, Coral Springs, Hollywood and the surrounding FL areas.