I'm planning a full width L-shaped dormer loft conversion (to an Edwardian terraced house) under permitted development rights and I'm trying to find every possible cm for head room in the main part of the roof as we're right on the 2m threshold that is, for us, the difference between enough and not enough!
My house has (original) decorative ridge tiles similar to those shown in this photo and I'd like the dormer roof to be level with the top of the decorative bit if possible (the tiles would be removed) as this would gain us a few cm. One of the PD requirements is "No extension to be higher than the highest part of the roof". In the technical guidance document it says "The highest part of the roof of the existing dwelling house will be the height of the ridge line of the main roof." but I can't find anything explaining exactly where the "ridge line" is. What I'm wondering is whether the "ridge line" on my house is the top of the decorative bit of the ridge tile or the bottom. I'm probably overthinking this and it is obviously the top but I'm just not sure.
Not that it means anything but one of my neighbour's has a dormer that is built to the top of the decorative bit (that's what gave me the idea!)
This thread shows a dormer that is the sort of height mine would be although the OP has rounded ridge tiles rather than decorative ones.
Thanks for any help!
My house has (original) decorative ridge tiles similar to those shown in this photo and I'd like the dormer roof to be level with the top of the decorative bit if possible (the tiles would be removed) as this would gain us a few cm. One of the PD requirements is "No extension to be higher than the highest part of the roof". In the technical guidance document it says "The highest part of the roof of the existing dwelling house will be the height of the ridge line of the main roof." but I can't find anything explaining exactly where the "ridge line" is. What I'm wondering is whether the "ridge line" on my house is the top of the decorative bit of the ridge tile or the bottom. I'm probably overthinking this and it is obviously the top but I'm just not sure.
Not that it means anything but one of my neighbour's has a dormer that is built to the top of the decorative bit (that's what gave me the idea!)
This thread shows a dormer that is the sort of height mine would be although the OP has rounded ridge tiles rather than decorative ones.
Thanks for any help!
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