I have recently brought a Victorian terraced house and whilst the roof appears in reasonable condition it doesn't have a membrane and is prone to leaks.
Trying to think long term I was planning to have the slates removed and a membrane and new battens added before re-tiling (re-using the original slates? if possible), I was also planning to add vents in the soffits to help with the ventilation. My main reasons for this approarch were that the roof which is over 100 years old (and original to the best of my knowledge) would benefit from new battens and fixings thus hopefully reducing the number of slipping tiles in the future, with a membrane preventing the seepage of water into the roof should any minor slippage occur.
It would appear from various forums that this maybe isn't the best way forward and that maybe I should leave the roof as it is and just have those tiles that have sliped respostioned.
Trying to think long term I was planning to have the slates removed and a membrane and new battens added before re-tiling (re-using the original slates? if possible), I was also planning to add vents in the soffits to help with the ventilation. My main reasons for this approarch were that the roof which is over 100 years old (and original to the best of my knowledge) would benefit from new battens and fixings thus hopefully reducing the number of slipping tiles in the future, with a membrane preventing the seepage of water into the roof should any minor slippage occur.
It would appear from various forums that this maybe isn't the best way forward and that maybe I should leave the roof as it is and just have those tiles that have sliped respostioned.