The purpose of any roof system is to keep water out of and divert it away from the building. Seems like a simple enough task but it is far from easy. But sometimes roofs leak, and they leak for numerous reasons and for the most part, the least of all are the materials. I have found the occasional arrow and bullet hole in the membrane but the following are the six most common causes of roof leaks.
Water has to go somewhere and you can’t depend on evaporation to solve the problem. Proper drainage is prerequisite for roof design.
The more penetrations you have on a rooftop the greater likelihood that water is going to find its way through. Designers need to eliminate all unnecessary penetrations to the roof surface
HVAC equipment can be the frustrating source of water entry. And, these units are often accompanied by pitch pans to seal the power and cooling lines.
Walls and Facades
It is not uncommon for cracks in the exterior walls or exposed masonry above the roof line to permit water into the building. It is not easy to diagnose and sometimes even harder to convince the building owner that there is nothing wrong with his or her roof.
Tool boxes, HVAC panels, carts and window washing equipment are just a few of the sources to cuts and punctures in membrane roof systems.
Workmanship ranks high on the list of unintended leaks. Improper installation of the materials, poor sealing or faulty seaming seem to create the most common sources of leaks.
Apart from the selection of high quality materials, the roof contractor will be the principal factor that determines whether or not your roof system performs leak free. Spending a little more for exceptional materials and workmanship can reap huge benefits many, many years down the road.
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