I notice that water pools in numerous locations about 10 20 feet from back of house.
Rubber roof standing water.
Understanding why your flat roof is holding water is the first step to finding a solution.
Ponding water is defined by the roofing industry as water that remains on the roof for longer the 48 hours after rain.
If your commercial building has a flat roof sometimes there is a problem with ponding water.
By their very nature flat roofs do not completely drain after it rains.
Since no nail holes result from this type of rubber roof installation there is no place for standing water to enter the roof.
Standing water on a flat roof add weight that will affect the structure of the roof the weight of the water pooling on a roof can cause the joists to bow and in turn cause more water to accumulate.
However puddles 1 or more inches deep that linger for days can indicate a.
Inadequate or obstructed roof drainage.
It is is very important to correct this issue before it becomes irreversible and costly repair follows.
Drains towards rear will this pooling create problems when it ices up or compromise the rubber or its seams.
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.
The contractor swears up and down it is fine and to think of swimming pools and how they hold water year round.
How to fix water puddling on a flat roof.
Such rubber roofing is available in big rolls which are simply attached to the roof sub surface utilizing an adhesive and not nails.
This is because the flat roof can hinder drainage from rainwater which results in standing water on the roof.
Standing water is typically defined as a collection of water on a roof which hasn t drained within 48 hours after rainfall.