Ponding On Roof Membrane

Damage to the roof membrane may occur from chemical and physical attack from the bio growth as well as the expansion and contraction of the bio growth during wet and dry cycles.

Ponding on roof membrane. This will lead to severe water damage and costly bills. Ponding water may lead to accelerated erosion and deterioration of the membrane surface that can result in failure of the roof system. Ponding water is defined as an excessive accumulation of water typically in a low lying area that remains on a roof for 48 hours or longer even when conditions are suitable for drying. Ponding water isn t an immediate threat in fact roof membranes are made with the same material as pond liners so water penetration is unlikely.

Ponding water may lead to accelerated erosion and deterioration of the membrane surface that can result in failure of the roof system. Allowing even relatively small amounts of moisture beneath the roof membrane may reduce the thermal efficiency of the insulation. Flat roofs by definition are not going to drain as well as slanted roofs. However this does not mean you should allow water to accumulate or puddle on top of your roof.

Left unresolved ponding water leads to accelerated erosion and deterioration of the membrane surface and results in premature failure of the roof system. Over time however ponding water can lead to accelerated aging of the roof membrane. Allowing even relatively small amounts of moisture beneath the roof membrane may reduce the thermal efficiency of the insulation. When ponding water on a flat roof starts to develop it is time to start.

Correct drainage is the most critical factor in preserving the life of your pvc roof. Ponding water accelerates roof system aging by. Ponding water might not be an immediate threat but if it is allowed to persist over time that water can begin to wear on the roofing membrane. Additionally vegetation and other debris may clog drains and cause additional ponding.

Failing to address ponding water also known as standing water can result in water seeping through your roof. This leads to a decline in the membrane s lifespan and can lead to things like leaks which can cause serious problems for the rest of the building.