Hi guys
I'm planning to put a side porch onto an 1890s semi, architect has specified on the drawing that there is a need to inject a dpc along the existing external (soon-to-become-internal) masonry wall along the new roof line to stop moisture coming down within the masonry wall into the house. Does this sound reasonable? I'm no expert but own research online suggests that injected dpcs are of limited effectiveness in general and I've not seen any mention of them being used in this way in the context of timber-on-masonry extensions, and would be happy to avoid any needless cost...
Grateful for any thoughts..
JonEC
I'm planning to put a side porch onto an 1890s semi, architect has specified on the drawing that there is a need to inject a dpc along the existing external (soon-to-become-internal) masonry wall along the new roof line to stop moisture coming down within the masonry wall into the house. Does this sound reasonable? I'm no expert but own research online suggests that injected dpcs are of limited effectiveness in general and I've not seen any mention of them being used in this way in the context of timber-on-masonry extensions, and would be happy to avoid any needless cost...
Grateful for any thoughts..
JonEC