Common Commercial Roofing Issues
Although commercial roof materials are durable, they’re susceptible to membrane damage. This is when the waterproof layer is torn, blistered, or damaged in some other way. In flat and low-slope systems, even minor membrane damage can cause water to seep into the structure. Addressing this type of damage immediately can help prevent extensive property damage.
Leaks occur when water enters the building envelope. In a commercial setting, this can cause extensive damage to computers, inventory, and other business assets. Leaks often occur due to deteriorated flashing, punctures, and membrane damage. It’s important to address leaks right away to minimize damage and prevent mold growth.
Water ponding is when water remains on a flat or low-slope roof for more than 48 hours. This can happen due to clogged drains, poor drainage, or insulation compression. Standing water adds weight to the roof and can worsen membrane damage. In severe cases, it can even cause structural sagging.
Seam separation occurs when the joints between the membrane sheets start to pull apart. Common causes include aging adhesive, improper installation, or frequent expansion and contraction. Seams are already vulnerable, so any separation can put the waterproof barrier at risk. If you don’t address this issue, it can lead to roof system failure.
Storm-related wear is any damage caused by rain, hail, and high winds. Wind can damage flashing or pull membranes out of place. Large hailstones can pierce TPO and other commercial roof materials. Debris can even cause large tears.