Leaks on any roof can be hard to identify. But it’s especially tough to find out where leaks on flat roofs are coming from. The leak rarely originates from directly above the area that water is appearing in your home with a flat roof. Since the water doesn’t travel down naturally, it takes the least resistant path and can appear anywhere around your house. But most flat roofs fail in similar ways, which means there are a few key places you should look at first. Find out the most common reasons for flat roof leaks so you can better identify issues in your roof.
Failed Flashing
The caulk sealing your flashing to roof elements has the shortest lifespan of the roofing materials. When the roof naturally expands and contracts with the seasonal temperatures, that pulls at the flashing and the caulk, which will eventually crack. You can avoid this type of leak with regular roof inspections and small repairs.
Cracks
Unlike sloped roofs, flat roofs have some pressure exerted on them from all sides, and if that stress builds up, the roof can crack. Unfortunately, a crack in your roof points to structural damage as well. If you see a crack in your flat roof, it’s time to call a professional roofing company immediately.
Pooling Water
Since flat roofs don’t have a slope for water to travel down and away from the home, they can be especially susceptible to pooling water. Usually, pooling is caused by blocked drainage that you can easily remedy by clearing debris out of the drains. Your roofing materials should be able to withstand occasional pooling water. However, if the water is allowed to stand for extended periods, it will eventually erode the materials and cause a leak.
Damaged Membrane
Unlike asphalt shingles that are separate pieces, most asphalt flat roofs have one single membrane. As the seasons change and the house shifts, that membrane can buckle, crack, and shift. If the membrane has been punctured or has a small crack, it may simply need a patch. However, buckles and damages due to age cannot be fixed, and your roof will need to be replaced entirely.
Roof Age
Modern flat roofs can last up to 25 years with proper maintenance. But the reality is, all roofing materials eventually fail and need to be replaced. If you spot a leak and your roof is over the 15-year mark, it could be time for a full replacement.
Flat roof leaks are tricky, but there’s one thing you know for certain; No matter where your roof is leaking, the leak and water damage will only worsen if you wait. If you suspect that your flat roof has sprung a leak, contact a roofing specialist right away.
