Ice dams may sound like a winter problem, but the trouble they leave behind often sticks around much longer. When heavy snow meets a warm roof, water can creep in and cause serious damage to the structural layers beneath. For commercial roofs, where large flat surfaces are common, the risks get even higher. Leaks from ice dams aren’t just annoying. They can trap moisture underneath the membrane, lead to mold issues inside the building, and shorten the roof’s lifespan.
If you’re responsible for keeping a commercial building in good shape, knowing how ice dams form and what to look out for can help you act fast before things get out of hand. Whether the damage is already done or you’re just trying to stay ahead of the next winter season, it’s worth understanding the big picture. Roof problems rarely stay small, especially when freezing and thawing come into play.
Understanding Ice Dams and Their Impact on Commercial Roofs
Ice dams happen when melting snow refreezes along the edges of a roof. On sloped residential roofs, this often looks like thick ridges hanging over the eaves. But on flat or low-sloped commercial roofs, it’s a bit different. Snow sitting closer to the warm interior of a building starts to melt. That meltwater then flows toward the colder roof edges where it freezes again. Over time, this leads to a barrier of ice that blocks off proper drainage.
Once water gets blocked, it looks for the easiest way through, which is often right into the roof system. Commercial roofs are built in layers, including insulation, vapor barriers, and waterproof membranes. When that water starts slipping between these layers, it can quietly compromise the roofing system before anyone notices. Signs might not show up until ceiling tiles develop stains or workers notice a mildew smell inside.
Weight from accumulated ice adds more pressure. If a roof’s drainage system—like scuppers or interior drains—is clogged with ice and snow, water stays put. That trapped moisture puts stress on seams and flashing, forcing them apart and making the roof even more vulnerable the next time the temperature swings.
It’s a common myth that only old or poorly built roofs are affected. Even well-maintained structures in cold climates like Ohio can face problems when snowstorms and rapid thaws mix. We often see ice dams form right after a snowstorm followed by a sunny afternoon. The sun melts the bottom layer of snow. That water gets stuck near the edge, freezes again after the sun goes down, and the cycle keeps repeating.
Warning Signs of Ice Dams on Your Commercial Roof
Spotting signs early means less damage and lower repair costs. Here are several warnings to look for during winter:
– Water pooling near downspouts or roof edges despite freezing weather
– Long icicles hanging from the edge of the roof, especially near gutters or drains
– Stained ceiling tiles or walls inside the building
– Warped spots or bubbling in roofing materials
– Drafty or warm areas near the ceiling in certain parts of the building
If you see any of these signs, act quickly. Even a small stain inside could mean water has been sitting where it shouldn’t for quite a while. Ice dams don’t always cause a visible mess right away. Damage might show up long after the original problem started. And leaks don’t always appear near the exact location of the ice. Water can travel across the roof, making it important to inspect the entire surface regularly during winter months.
Routine walk-throughs can help a lot. You might notice changes on the roof sooner, especially following heavy snow or noticeable temperature swings. Catching pooled water or blocked drains early can prevent more serious and costly issues.
Preventative Measures for Ice Dams
Keeping ice dams from forming in the first place saves time, money, and stress. These steps help reduce the chances of trouble:
– Confirm adequate attic insulation: A well-insulated attic helps keep the heat inside, preventing the snow on the roof from melting unevenly.
– Improve roof ventilation: Airflow through ridge and soffit vents keeps the roof temperature more consistent throughout, lowering the risk of spot melting and ice formation.
– Keep drains and gutters clear: Clean and working drainage systems keep meltwater moving properly off the roof and away from trouble spots.
– Remove packed snow often: Light snow removal before melting begins lowers the risks of dam formation in the first place.
Inspections and maintenance are the backbone of prevention. Check before winter starts and keep looking during the season. Issues like poor insulation, clogged drains, or broken flashing can be fixed before they cause problems. Having your commercial roof reviewed by a professional helps catch problems early and points out areas that could use improvement.
Dealing with Existing Ice Dams
Sometimes you’re already dealing with an ice dam before you know it. At that point, the focus should be on removing the blockage safely and minimizing damage. Do not try breaking off ice or climbing icy surfaces on your own.
– Call in professional help: Trained contractors use steamers and other proper equipment to melt and remove ice without hurting the roofing material.
– Use safe temporary steps: While waiting for help, applying calcium chloride products (never rock salt) in targeted spots can melt small channels and help some water drain.
Once the ice is removed, the next step is repair. Flooded insulation, dislodged flashing, and soaked decking might need replacement before the roof can be trusted again. Professionals can assess the structure, uncover damage that’s hard to see, and make sure the repair plan fits both the roof type and the issue at hand.
Why Professional Commercial Roof Maintenance Matters
Hiring experienced roofing professionals goes a long way in keeping your commercial property protected year-round. Here’s how they help:
– They know what to look for: Trained technicians can pick up subtle signs long before roof problems become obvious. That alone can save a lot of money in the long run.
– They build safe maintenance plans: Depending on the size and design of your roof, a professional service schedules inspections and upkeep that make sense for your property.
– They fix problems correctly: Whether it’s clearing ice or replacing damaged decking, skilled services know how to handle repairs that last.
Working with professionals adds peace of mind. You know your commercial roof is being looked after by people who understand how weather and wear affect flat and low-sloped structures. Winter months only increase the importance of steady, reliable roof care.
Keep Your Roof Safe During Winter
The cold season brings challenges, but it doesn’t have to bring damage. Routine inspections and smart maintenance help keep things running smoothly inside and out. Before snow and freezing temperatures settle in, have your commercial roof inspected and prepped by trained pros.
Waiting until there’s a leak or an ice dam in full swing leads to bigger repair bills and business disruption. Planning ahead pays off, especially when temperatures start to drop.
Make sure your commercial roof is in great shape no matter the season by staying on top of the necessary care. Regular inspections and professional upkeep are key to preventing any future issues, including those pesky ice dams. Learn how our commercial roof maintenance can help keep everything in check. Trust All American Roof Pros to ensure your roof withstands whatever winter throws its way.