For both new buildings and the renovation of existing roofs, ensure that the roof structure meets the requirements for the proper installation of a PREFA roof. Pay attention to the minimum roof pitch of the respective products, and check the sub-structure framework for any inaccuracies.
Note
Additional information on standing seam coverings: The lower the fall the higher the danger of water ingress through the standing seams caused by rain, wind, snow. For a roof pitch of up to 7°, special measures (e.g. sealing gel) must be taken into consideration.
We therefore highly recommend a roof pitch >7° (13%).
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