Flat roofs are gaining in popularity in the commercial roofing industry. Not only do commercial buildings have these as a standard but residential ones as well. Many owners consider this type the most convenient since they can create a terrace there and the overall look is appealing to them.
But there’s one issue that many building owners encounter with commercial roofing – ponding water. After rain or snow, some water remains on the surface of the roof, which doesn’t seem like a lot of trouble, right? It will eventually evaporate.
But when will this happen? And how much damage the water can do to the materials of the structure until then? There are no slopes for it to drain off the roof, so puddles remain, sometimes for months!
Let’s discuss the issue, what it can do, why it happens, and how to fix it.
Why Is Ponding Water a Problem?
Even a small amount of water can damage your roof significantly. Its weight pushes the materials down and the surface can sag. Moreover, every building has its weight limit. If it’s exceeded for a long time, the structure may be even partially destroyed.
Materials also deteriorate underwater. It causes erosion that can lead to roof failure much earlier than initially expected.
Another consequence is the accelerated growth of moss and algae. They result in partial damage and stains.
All of this will cause leaks, resulting in further deterioration and further destruction.
Reasons Water Puddles Appear on Your Flat Roof
Let’s quickly overview the main reasons for pooling on flat roofs:
- Faulty installation.
Flat roof isn’t completely flat. It should be installed with a slight pitch and slopes that help the water flow to the drains. If the task wasn’t completed properly, ponding water will start its job, deteriorating roofing materials.
- Problems with drainage.
If the drainage system was installed improperly or is clogged with dirt and/or debris, there will be no way for the rainwater to drain. Maintain the tubes properly and clean them regularly to avoid the issue.
- Slight slopes near roof elements.
Some roof elements may be installed with slight dips near their connections with the main cover. Obviously, water will remain there for a long time, causing some or all of the issues we have described above. You can fix the problem by reinstalling the elements correctly.
- Wrong insulation maintenance.
Many flat roofs aren’t supposed to have people walking or heavy objects stored on them. If this happens, your commercial roofing insulation will compress and allow for water to accumulate in the dip created by the weight. Pooling will get worse and worse over time.
Turn to Professionals for Help and Fix Pooling Forever
If you see that it’s impossible to correct the problem, make sure to call professionals. They will inspect the roof and see what can be done to resolve the issue as soon as possible and with minimum damage.