Roofing Standing Water

If your commercial building has a flat roof sometimes there is a problem with ponding water.

Roofing standing water.

Standing water weighs approximately 5 lbs. This is because the flat roof can hinder drainage from rainwater which results in standing water on the roof. How much more when the type of roof that you have is a flat one. If this is the case there is a high chance that the ponding water will stay on the roof for a long period of time causing the collection of water to become bigger.

Standing water will create the need for roof maintenance because a roof leak repair will be the order of the day when ponding persists. A standing water area of only 10 by 10 and 1 deep is 200 total square feet and an additional live roof weight of 1 000 pounds. As old roofing surfaces wear out or curve it becomes harder for water to flow off of the roof. Ponding water accelerates roof system aging by.

Standing water is typically defined as a collection of water on a roof which hasn t drained within 48 hours after rainfall. Per inch per square foot of roof surface. That can be extremely dangerous for your roof if too much water accumulates. Residential and commercial roofing shingles slate roof ventilation roof underlayments asphaltic and tpo roof membranes.

Standing water develops when your roof s surface formulate small channels or canals where rain pools. This is especially prevalent after a lot of rainstorms. Long term effects of ponding water on a flat roof. Having some standing water on a roof can be so stressful.

Check the gutters for any backup of debris that could prevent water from draining properly. When can it damage the roof. If water is backing onto the roof clean out the gutters to restore proper water flow. However standing water that stays for more than two days can be very problematic for the roof membrane because it can void your roof s warranty.

This is the greatest risk you take if you don. The water will stick around on the roof thus adding weight and stress onto the surface. 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. Water sitting on a roof will be there for an extended period and find a way into your roofing system that is a given.