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What Is Flat Roof Rot and How Should You Address It?

Commercial roofing systems, in comparison to residential roofs, can be more challenging to maintain due to their bulk and lack of slope. Flat roof rot, which occurs when a wood-eating fungus tears down your roofing materials and weakens the roof deck and sheathing, is one of the hazards. Unfortunately, some commercial property owners are oblivious to this type of roof damage



What Is Flat Roof Rot?

A flat commercial roofing system, like a steep-pitched residential roof, can be susceptible to dry rot. This is a problem you'll want to avoid at all costs because it deteriorates roof membranes and damages decking and framing, thus speeding up deterioration. Flat roof rot, if ignored, can result in huge roof leaks and, perhaps, full roof failure.

How Will You Be Able to Tell?

Dry rot on flat roofs is not always apparent, but the following clues might suggest its existence:

  • Water stains on interior walls and ceilings

  • Flashing cracks around vent pipes and other roof components

  • Discoloration of the fascia boards

  • Minor to major sagging

What Can Cause Flat Roof Rot?

Moisture is the primary cause of roof deterioration. Humidity levels in the attic, for example, are excessive due to poor ventilation. This exposes wood components to excessive moisture, which causes wood degradation by allowing the fungus to infiltrate the surrounding fibers.

Ponding on a flat roof, clogged gutters that contribute to poor drainage and roof installation mistakes that resulted in water seeping through and harming the wooden structures can all contribute to flat roof rot. Depending on your contractor’s assessment, the roofer may recommend a replacement roof, especially if the damage is too severe to be fixed with simple repairs.

How Do You Deal With Flat Roof Rot?

  • Schedule a roof inspection. Do this twice a year or after a big storm. Your chosen contractor will inspect your roof for any issues to prevent rot.

  • Repair shingles or roof membrane. To avoid moisture damage, replace deteriorated caulking around chimneys and vents.

  • Ensure good roof ventilation. If your flat roof lacks ventilation, install more. This keeps your attic at a constant temperature all year long, preventing moisture buildup.

  • Remove any roof debris. Branches, leaves and other debris can clog gutters and prevent water from draining away.

A1 Quality Roofing, Inc. can undoubtedly provide when it comes to top-notch roofing services, such as roof repair and replacement. We'll make sure the job is done right the first time with our skilled and experienced team. To learn more about our waterproofing roof services, call us today at (951) 877-4406. You may also fill out our contact form to schedule your roof evaluation.

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