Ponding Water Epdm Roof Leak

Stress on the post s base and surrounding epdm would say that ponding water is damaging things.

Ponding water epdm roof leak.

He further suggests that they could ballast the roof if i pay for the stones so that the ponding would not be seen. As defined by the national roofing contractors association ponding is characterized as any water that remains on the roof for longer than 48 hours following precipitation. The longer that these puddles sit without evaporating the more an issue they will begin to cause. A small cut or puncture in a roofing membrane may cause minor damage on a well drained roof surface but the same puncture located in an area of standing water may allow significant water infiltration causing damage to the roof insulation roof deck and building contents.

Ponding water leads to leaks ponding represents perhaps the single greatest threat facing a flat roof. This moisture has absolutely no affect on epdm membrane. This article describes an epdm roof installation study roof repair history spanning fourteen years from original rubber roof installation and the mistakes shortcuts that led to leaks and trouble to an extensive tear off and re roof repair that was made along the entire problem roof s lower edge. Moisture found in ponding areas has caused decay of organic felts built up roofs algae growth light colored roofs granule loss modified bitumen roofs and premature curing and surface cracking non vulcanized thermoplastic membranes.

Um you might not want to puncture a synthetic rubber membrane. From there the water will be directed off your roof. While it is always good roofing practice to provide positive drainage for any roofing assembly epdm membrane offers greater safety margins in the event of deflection and subsequent ponding. Water always looks for the lowest place it can go if water is properly draining from your roof it will quickly find the lowest spot on your roof which should be a gutter or drain.

Eventually the ponding water spots on an epdm roof will cause leakage issues. The roofing manager insists that this is not a problem and because there is a continuous layer of epdm and no joins it is perfectly acceptable and it will never leak. Ponding water can exacerbate problems for all roofing systems. If the business owner starts to notice that there are a number of puddles on their epdm rubber roof after a hard rain they need to act.

Often i see where these posts are literally nailed through the epdm to attach them to the roof. If the water does not drain within a 48 hour period it is highly likely that it will stay even longer and there will be a larger amount of water standing. But if the water is pooling the pooled water is looking for the lowest place it can go. We illustrate how choice of the wrong roof edge flashing combined with wrinkles in the original epdm installation led to both frequent maintenance and frequent leaks in the original roof.