Richflew

@Cpd after months of delays for various reasons we are now getting round to doing this. Looking at your drawing, can you explain to me why the sauring board is necessary rather than just using horizontal timber 3x2 lats to support the corrugated sheets. Also, we have to build the timber truss structure. My joiner says it's a waste of time having rafters every 400mm - do you have an opinion on this? thanks Richard

thanks to both of you @cpd and @Russell griffiths This is comforting - I've had the OK from the building inspector too so I'm excited to get on with it now!!

Hi, I have read this thread with interest and joined the forum to participate (looking forward to seeing what else is on here ?) We are in the initial stages of a barn conversion as in photo. One single storey wing has corrugated roof at present. The whole structure needs replacing but, as it is Grade II listed we would like to use black plastisol coated corrugated sheets to keep the feel as it is now (it's also considerably cheaper than other metal roofing). We have to keep to the same height so insulation will go between rafters then over-boarded with insulated board to get to building regs. Although common in other parts of the world it is uncommon to use corrugated sheets in the UK for domestic roofing. I have 2 questions... particularly for @Cpd @Russell griffiths as it looks like you have done similar projects. 1) With the insulation as suggested is sound likely to be a problem when it rains? 2) Do you know if insurers and mortgage providers will have a problem with this type of roofing? thanks