flat roof guideline

The flat roof guideline was published by the Central Association of the German Roofing Trade (Zentralverband des Deutschen Dachdeckerhandwerks). The flat roof guideline provides professional guidance on the sealing of used and unused roofs, but does not replace the regulations contained in the current DIN standards. For this reason, both the guidelines and the DIN standards should always be considered. Source: Bauder (http://www.baunetzwissen.de/standardartikel/Flachdach-Flachdachrichtlinie_1323705.html).