Do you need a vertical dpc below the damp course?

[davidmiller]

Hello, I'm referring to where the new cavity wall connects to the existing outside wall.
I intend to cut the bricks out and connect the inside wall of the extension to the inside skin of the house. I wasn't going to do this until I got to the dpc height.
But is it necessary to do something below the dpc? If so will cutting a slot vertically and sliding 112mm dpc in. Cheers

 

[blup]

Juts make sure they overlap

 

[noseall]

Hello, I'm referring to where the new cavity wall connects to the existing outside wall.
I intend to cut the bricks out and connect the inside wall of the extension to the inside skin of the house. I wasn't going to do this until I got to the dpc height.
But is it necessary to do something below the dpc? If so will cutting a slot vertically and sliding 112mm dpc in. Cheers

No.

 

[davidmiller]

Thanks gents, apologies for late response. I didn't get an alert.