Hello
I have created a post on diynot which has some photos. So if you need to see what i am on about please have a look at this link.
http://www.diynot.com/diy/threads/drain-problem-2-problems.436373/
I am running my drainage channels in front of the soil stack, so about 200mm from the house wall. I will back fill with cement and then fill the trench with gravel.
Because i have had to change over the drains today, can anyone tell me what product i should use to feed the channels into. I was in a rush to get all the drainage done so my tenants could use the toilet and shower today, so didnt think about where i would run the patio drainage. So tomorrow i need to change the round gully trap i have bought today.
Any idea what i could use ? This morning all was going to plan and i was just going to run the channel into the large square clay drain which was there, but then i discovered the pipe work was backing up and leaking. So all this has been changed (but i still have a blockage, which i am going to sort tomorrow). Been a full on day !!!