Even though we call them flat, usually they are not absolutely flat as some “minimum” slope is necessary to allow the rain water to flow off the roof. Therefor the roofs which pitch is below 10 degrees (standard is approximately 3 degrees) we call the flat roofs. The flat roofs advantages are: - the (residential) flat roof construction is less demanding than the construction of any

- the flat roof coatings do not last as long as the pitch roof roofing products; - the flat roof maintenance is more demanding and the replacement of flat roof is not that easy if it comes to that.

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