Hi
Between our house and neighbours house is a double course party wall, both propertys have a flat roof on at the moment but i'm doing the plans for converting our flat roof to a pitched one (with dormer).. however i'm unsure what to do with the party wall... obviously it needs raising on my side to seal off the side of the pitched roof but was thinking neighbours side can remain at the same height it is currently... but if thats the case how do you seal off the cavity between them? do you just put masonary over the cavity and then flash over the top?
Thanks in advance
Matt
Between our house and neighbours house is a double course party wall, both propertys have a flat roof on at the moment but i'm doing the plans for converting our flat roof to a pitched one (with dormer).. however i'm unsure what to do with the party wall... obviously it needs raising on my side to seal off the side of the pitched roof but was thinking neighbours side can remain at the same height it is currently... but if thats the case how do you seal off the cavity between them? do you just put masonary over the cavity and then flash over the top?
Thanks in advance
Matt