The changing colors are beautiful but the fallen leaves can accumulate and lead to serious issues. Cleaning leaves off your commercial roof is crucial maintenance that can prevent damage, save $$$, and ensure the longevity of your roofing system.
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Why Leaves Are a Problem for Commercial Roofs
- Blocked Drainage Systems
One of the biggest issues caused by fallen leaves is blocked drainage. Commercial roofs, especially flat or low-slope ones, often rely on drainage systems like gutters, downspouts, and interior drains to manage rainwater. When leaves accumulate, they can clog these systems, causing water to pool on the roof. Standing water can lead to leaks, structural damage, or even roof collapse if left unchecked.
2. Moisture Retention and Roof Deterioration
Wet leaves trap moisture against the surface of your roof, which can contribute to mold, mildew, and algae growth. Over time, this constant exposure to moisture can degrade roofing materials, leading to premature aging and damage, especially in commercial roofs with membrane systems. This can compromise the integrity of your roof and shorten its lifespan.
3. Increased Weight
While individual leaves may not seem heavy, a large buildup over time can add significant weight to your roof, particularly after rain or snow. This added load can put stress on the roof structure, leading to potential sagging or damage to the roofing supports. For older buildings or those not designed to bear such additional weight, this can be a serious concern.
4. Pest Infestation
Piles of leaves can attract pests, including insects and rodents, which may seek shelter or food. Once they make their way to your roof, they could find an entry point into your building, leading to further complications like interior damage and contamination.
Best Practices for Fall Roof Maintenance
- Regular Inspections and Cleanings
The best way to avoid leaf buildup is with annual fall inspections. Checking after heavy winds or storms can also help identify areas where leaves may collect. Schedule consistent cleanings to ensure your roof remains free of debris throughout the season.
2. Use Proper Tools and Techniques
When cleaning leaves off a commercial roof, it’s important to use the right tools to avoid damaging the roofing material. Avoid using metal tools or harsh scrapers that could tear or puncture the roof surface. Instead, opt for soft-bristle brooms, leaf blowers, or rakes specifically designed for roofing materials.
3. Maintain Your Drainage System
In addition to cleaning leaves off the roof itself, be sure gutters, downspouts, and drains are cleared of any leaf buildup. Clogged gutters and poor drainage will not only cause issues in the fall but can freeze over in the winter.
4. Trim Overhanging Trees
If trees surround your commercial property, trimming back overhanging branches can preventatively reduce the volume of leaves that collect. Doing this also reduces the chances of branches or other debris damaging your roof during storms.
5. Hire Professional Help
Professionals are trained to work on commercial roofs and can identify potential issues that an untrained eye might miss. They also have the equipment necessary to ensure a thorough cleaning without risking damage to your roof.
