Three Ways to Prevent Roofing Problems

Roofing systems on institutional and commercial infrastructure are usually an afterthought for building occupants until the roof leaks, that is. Roof leaks are an annoyance for occupants at best, but they can also damage property and expensive repairs.

Fremont, CA: Roof systems are among the most challenging elements for building management and engineering managers to maintain. Managers should concentrate their maintenance efforts on three of the most common roofing trouble spots to effectively use department resources: flashing, roof penetration, and foot traffic. Through carrying out routine inspections, thorough maintenance, and continuous mitigation, the best way to combat these problems is.

Flashing Points

Flashings are just a tiny portion of a roof's total area, but instead of the field membrane, a technician may also track issues and leaks back to a flash. Anywhere a membrane terminates is a chance for water infiltration and, therefore, a weak spot in the system, especially if installers did not correctly detail it.

Flashing materials should reach or exceed the roof's life expectancy because of their significance. Flashings often connect various moving components, so they should be able to accept thermal and load-induced movement, mainly if they are located above an expansion joint.

Ponding water on flickering seams raises the risk of failure, so technicians can take precautions where possible to stop them. Technicians should build crickets or water diverters around mechanical curbs to aid drainage to further minimize ponding at flashing seams. Usually, vertical flashes can stretch at least 8 inches above the roof. An easy and inexpensive solution to reduce ponding is installing a PVC condensate line to bring water from rooftop HVAC equipment to the nearest drain. Roof drains should also be kept clear and working by technicians.

Technicians should note open seams, punctures, decolorations, and sagging membranes on vertical curbs during routine inspections. When the membrane is unadhered from the rising vertical wall, parapet, or curb, membrane bridging usually occurs. The bridge strains the material, which can cause rips and tears to occur. Before the next roof repair, technicians should preventively patch the area.

Flashings can also be investigated periodically or after severe weather events. Other discovered problems, such as rotted wood nailers, corroded fasteners, and deteriorated insulation, should not be overlooked by technicians if roof parts are opened. If repairs are required, technicians must make sure that they are sufficiently detailed and that materials consistent with the roof type are used. Many studies indicate that implementing the manufacturer's prescribed inspection and repair schedule results in longer roof life and lower roof costs overall.