Hi,
I'm having an extension done and the back rear wall is having a pelmit wall built higher than the flat roof.
Other than a coping stone (which I'm struggling to find) how do I close the cavity off and make water tight.
As i said i was going to use a coping stone but cant find one 350mm wide. when i do they cost a fortune.
The flat roof flashing with be going under the "coping stone" so with the 2 skin of brick and the cavity that's 300mm plus 30/40mm for flashing.
Any ideas?
I'm having an extension done and the back rear wall is having a pelmit wall built higher than the flat roof.
Other than a coping stone (which I'm struggling to find) how do I close the cavity off and make water tight.
As i said i was going to use a coping stone but cant find one 350mm wide. when i do they cost a fortune.
The flat roof flashing with be going under the "coping stone" so with the 2 skin of brick and the cavity that's 300mm plus 30/40mm for flashing.
Any ideas?