Revisions log for Answer #2809

here are roofing recommendations for this. Up to 7° (5°) typically trapezoidal sheets, Eternit wave, zinc seam roofing. possibly double seam, etc. goes. Depending on the requirements, you may need a waterproof roof UNroof with sealed counter battens. With specially designed shingles (Braas) presumably a durable roof covering in the 12°-7° range is possible. Whether this really makes sense and looks good remains to be questioned. Clean waterproofing with roofing membranes is also usually possible, but it must be ventilated and either be approved by the building authorities as a "soft roof" in the appropriate situation (bitumen membranes), have a gravel load of at least 5 cm, or meet fire safety requirements as a plastic/elastomeric waterproofing membrane with building authority approval. Therefore, the decision in favor of one or the other material depends first of all on the construction, then on the design and finally on the price. Panel roofing and trapezoidal sheets are pretty close in price, including all the extra work. Eternite is about 1/3 more expensive, zinc roofing is about 2-3 times more expensive, depending on the shape of the roof.