We've opted (subject to planners agreement) to switch from a standing seam roof to a corrugated alternative very much like the attached image (Dualchas design) . We're surrounded by farms and it's very much the local style. I've started looking at material options and have come across a Marley Eternit fibre cement board profile solution. Claims of noise reduction, reduced condensation and increased lifespan sound good but what would be the downsides over traditional steel options and has anyone used similar? This might be relevant to @Visti who I think is planning something similar.