If you own a business, your flat roof is probably one of those things you don’t think about until there’s a problem. It’s just there, doing its job, until one day, it isn’t. And when that happens, you’re looking at potential leaks, costly repairs, or even full-blown replacements that can disrupt your operations.
The good news? At RoofCrafters, we know that a little bit of routine maintenance can go a long way in keeping your flat roof in great shape, extending its lifespan, and saving you money in the long run.
So, whether you own a retail store, a warehouse, an office building, or any other commercial property, we have some maintenance tips that will help you protect your investment. Let’s jump right in, shall we?
Schedule Regular Inspections
One of the easiest and most effective ways to maintain your flat roof is to inspect it regularly. While a professional roofing contractor should perform a thorough inspection at least twice a year (typically in the spring and fall), you can also do quick visual checks in between.
When inspecting your roof, look for:
- Ponding water: Standing water on a flat roof can lead to leaks, structural damage, and mold growth.
- Cracks or blisters: These can indicate aging or underlying issues with the roofing membrane.
- Debris buildup: Leaves, branches, and dirt can clog drains and create water pooling issues.
- Flashing damage: Loose or deteriorating flashing around vents, skylights, and HVAC units can lead to leaks.
Catching these issues early can prevent them from turning into bigger, more expensive problems.
Keep Your Drains and Gutters Clear
Flat roofs rely on drains, scuppers, and gutters to move water off the surface. If these drainage systems get clogged with leaves, dirt, or debris, water will have nowhere to go, and that’s when ponding starts.
To avoid drainage issues:
- Clean out gutters and drains at least twice a year (and more often if your building is near trees).
- Install gutter guards to minimize debris buildup.
- Check for slow drainage after heavy rain. If water is lingering, there may be a blockage.
A little time spent on drain maintenance can save you from major water damage down the road.
Address Ponding Water Immediately
If you notice standing water on your flat roof more than 48 hours after a rainstorm, it’s a problem. Over time, ponding water can weaken your roof’s membrane, increase the risk of leaks, and even cause structural damage due to the added weight.
How to fix it:
- Ensure your roof has the proper slope and drainage system.
- Use tapered insulation to improve water runoff in problem areas.
- Check for low spots and have a roofing contractor level them out if necessary.
Ignoring ponding water is like ignoring a slow leak under your sink; it may not seem urgent at first, but it will come back to haunt you.
Watch for Membrane Damage
Most commercial flat roofs are covered with a membrane system like TPO, EPDM, or modified bitumen. Over time, these membranes can develop cracks, blisters, or punctures, especially in areas with high foot traffic.
To prevent and repair damage:
- Limit rooftop traffic by restricting access to essential personnel only.
- Install walkway pads in high-traffic areas.
- Minor damage should be patched quickly before it turns into a leak.
A small tear in your roof’s membrane might not seem like a big deal now, but it can expand and let water seep in, leading to interior damage and expensive repairs.
Check Seams and Flashing
The seams where roofing materials overlap and the flashing around roof penetrations (vents, HVAC units, skylights) are common leak points.
To keep them watertight:
- Inspect seams for signs of lifting, cracking, or separating.
- Check flashing for rust, gaps, or deterioration.
- Ensure all roof penetrations are properly sealed and reinforced.
If you spot an issue, have a professional apply a sealant or repair it as soon as possible. A little proactive maintenance here can save you from a major leak later.
Trim Overhanging Trees
If your building is near trees, overhanging branches can drop leaves and debris onto your roof, clog drains, and cause water buildup. In a worst-case scenario, a heavy branch could break off and puncture your roof membrane.
What to do:
- Trim back any branches hanging over your roof.
- Regularly remove fallen leaves and twigs to prevent buildup.
- Consider scheduling annual tree maintenance with a professional arborist.
Keeping trees in check helps protect your roof while also reducing the risk of pests like squirrels and birds making a home up there.
Be Mindful of HVAC Units and Rooftop Equipment
Many commercial buildings have HVAC units, vents, and other mechanical equipment mounted on the roof. These systems can be a source of leaks if they aren’t properly maintained.
To prevent problems:
- Regularly inspect the areas around HVAC units for leaks or pooling water.
- Check for loose or damaged flashing around rooftop equipment.
- Ensure HVAC technicians use proper walkway pads to avoid damaging the roof membrane.
Sometimes, a simple oversight (like an improperly installed HVAC unit) can lead to a major roof failure.
Don’t Ignore Small Leaks
If you notice water stains on your ceiling or walls, don’t brush them off as “just a small leak.” Even a minor leak can lead to mold growth, insulation damage, and costly interior repairs.
When dealing with leaks:
- Identify the source as soon as possible (it’s not always directly above the water stain).
- Have a professional perform a leak detection test if necessary.
- Repair leaks immediately to prevent further damage.
Waiting to fix a leak is like waiting to fix a cavity; it’s only going to get worse (and more expensive).
Invest in Preventative Maintenance
The best way to extend the life of your flat roof is to have a preventative maintenance plan in place. Many roofing companies offer maintenance programs that include regular inspections, minor repairs, and cleaning services.
Benefits of a maintenance plan:
- Identifies problems early before they become costly.
- Extends the lifespan of your roof.
- Keeps your warranty valid (some manufacturers require routine maintenance).
Think of it as routine car maintenance! Spending a little now can save you from a massive repair bill later.
Know When It’s Time for a Professional Inspection
Even if you’re keeping up with maintenance, there will come a time when you need a professional to take a closer look. Call in a roofing contractor if you notice:
- Persistent ponding water that won’t drain
- Multiple cracks or blisters in the membrane
- Mold or mildew growth inside your building
- Signs of structural sagging or major leaks
Catching issues early can mean the difference between a simple repair and a costly roof replacement.
Need Help with Your Flat Roof?
A well-maintained flat roof is essential for protecting your business, employees, and assets. By taking a proactive approach to inspections, cleaning, and repairs, you can avoid unexpected expenses and keep your roof performing at its best for years to come.
If you’re unsure about the condition of your roof or need professional assistance, don’t hesitate to reach out to a commercial roofing expert. A little maintenance today can save you a lot of money and headaches down the road.
If your commercial roof needs inspection or maintenance, RoofCrafters is here to help! Simply hit that “Schedule an Inspection” button down below, and one of our commercial experts will walk you through the next steps.
