DPM higher than DPC - possible?

[pilsbury]

The current DPC on my house sits a brick below FFL. When extending should I continue the DPC at the same level?The ground level outside is flat and 220mm below DPC.

If so, when I pour my floor slab and lap the DPM into the internal leaf, that will be a brick higher than the DPC....

What's the right way to do this?

 

[^woody^]

Keep the DPCs level with the new floor level. Step the external DPC down where it joins the the house and lap it with the existing

 

[pilsbury]

Magic

 

[23vc]

I asked (or tried to) very similar a couple of weeks ago. I've since moved on a bit and the extension dpc level will be a bit higher than the existing house one, and they will be linked via a (small) vertical dpc after advice on here and the bco has also said that's fine.

 

[23vc]

Sorry I didn't see the reply, I guess I gave a "worse" version of Woody's answer lol

 

[pilsbury]

Looks like I'll be following in your footsteps