Repairing a leak in a flat roof can be tricky. A flat roof will ordinarily have several different layers between the top surface and the ceiling and as water seeps down through these layers, it can change course and move in almost any direction.

With a sloping roof its normally a lot easier to judge the approximate region of the leak. Since water goes quickly down the sloped roof, the point on the ceiling where you see the leak will often be a similar point on the roof itself. Recently we had a situation where a leak was coming from a sloped roof in our home and we were able to quickly and easily identify the breach point.

Finding a leak on a flat roof it is going to depend a lot more on the experience and intelligence of the roofer - more than with other kinds of roof leaks. He or she needs to be able to identify all the common causes of leaks on flat roofs. He needs to be able to immediately look towards the spots that are likely to be vulnerable - such as flashing, junctions with parapet walls etc.

A potential culprit in many flat roof leaks is depressed parts of the roof where water settles. You need to isolate the areas of residual damp on the roof or depressed areas that sometimes show concentric rings of dirt where water has evaporated.

As discussed at flat roof repair, in general any depressed area on a flat roof is potentially vulnerable to leaks and should be addressed sooner or rather than later.

In reality though, you are going to have to trust to the judgement of your roofing contractor. He will need to point out to you the areas that he thinks are responsible for leak. And all you can do is pay him to carry out the work and hope for a dry ceiling when the next serious rain falls. You will only know if he was right when the leak stops.

If you’d like more information on flat roofs in general, especially the flat roof materials available epdm roofing is a site you should visit for guidance..