Risk of bridging DPC


Postby Buster9 » Wed Mar 31, 2010 9:46 pm

I want to pave a large patio area which is at present a concrete slab. The slab is 2 courses below DPC and I understand that this level should be maintained. I intend to lay 38mm paving slabs using spot morta but I do not know what to do about maintaining the DPC level running along the building edge. Can I put some sort of channel or other method along the wall - say about 4" away from the wall itself so that rain cannot splash over the DPC. Hope this makes sense !

Any advice would be very much appreciated.
Buster9
Posts: 1
Joined: Wed Mar 31, 2010 5:24 pm

Sponsor

Simply Build It

Postby Perry525 » Fri Apr 02, 2010 3:54 pm

The best bet is to dig out a channel along side the wall, making it deeper than 6 inches below the dpc and at least 12 inches wide.
If you then cover the bottom of the hole with small round stones and watch when it rains, you will see that the rain doesn't bounce, when it lands on the stones.
Perry525
Posts: 723
Joined: Fri Jul 06, 2007 7:35 pm


Display posts from previous
Sort by
Order by