Maybe it depends where you come from, but concrete roofing tiles are laid on pressure treated battens. The batten spacing is critical to ensure the correct tile lap. Not all tiles are suitable for particular situations and you have to be careful to use the correct tile for the pitch of the roof. Some tiles are suitable down to a shallow 12 degree pitch but not all can manage the mandatory water clearance rate particulary in wind driven rain. Noggins are short timber braces particularly between joists to prevent natural twisting. They used to take the form of cross noggins (criss cross pattern) but this was quite time consuming and single short lengths of timber are now usually used. The term is also applied to short lengths of wood fixed between the vertical timbers of stud partition walls prior to plasterboarding to brace them and also prevent bowing. The same term applies to gang nailed truss roofs at ceiling level, whereas the truss cross bracing is provided by continuous lengths of timber fixed internally known as straps. Just great to remember the good old days on site, but am I ****ing glad I'm not doing that anymore......
did you read that in a book or did you know? I'm not too familiar with the lighter end of the industry but I did come across noggins from when we were having our house built. Ah the memories ......
Good to know that at one time you used your noggin eric... with your low IQ it must be a proud memory
Do you need any advice? I'm sure one or two of us would be able to give direction, time and expenses?
I can't actually remember what I did but I think it was a noggin or perhaps it was a brace or even a tie I wish some high IQ person could tell me.