Browse Forums General Discussion Re: Downpipe in cavity? 22Jun 02, 2015 6:31 pm I had a chat with the builder today and the builder mentioned that the cavity would be extended to bottom left side of the garage. It would be the same as the existing cavity downpipes on the current garage wall and the variation is about $60. I will post the plans once the changes has been drafted. Re: Downpipe in cavity? 23Mar 03, 2020 6:52 pm whzzz28 I do not think installing a downpipe in a cavity is a good idea at all. As you mentioned, what happens when it clogs? What happens when you get a large downpour and your downpipes can't cope and overflow? I would not ever put a downpipe into a cavity. Zero lot houses generally don't have a downpipe where the boundry is, they put it somewhere else. That’s why there are rainheads/sumps pal. Makes it a non issue. Front facing down pipes on facades are vile. Re: Downpipe in cavity? 24Mar 03, 2020 6:56 pm rebuilder86 whzzz28 I do not think installing a downpipe in a cavity is a good idea at all. As you mentioned, what happens when it clogs? What happens when you get a large downpour and your downpipes can't cope and overflow? I would not ever put a downpipe into a cavity. Zero lot houses generally don't have a downpipe where the boundary is, they put it somewhere else. When it clogs, you clean it just as you would any other downpipe??? When there is an unmanageable downpour it behaves just like any other overflowing gutter, into the eaves or cavity. Downpipes are sealed to gutters and have nothing to do with the results of overflow issues so I'm not sure what your point was here???? multi story buildings run plumbing (faecal matter and urine!!!) through cavities and we don't have concerns, how should this be any different I wont sit here and be an armchair expert but I'm pretty sure where the downpipes are routed should be the least of your worries. Worry more about the amount of drainage in total, that is where problems arise. Totally agree Re: Downpipe in cavity? 26Mar 04, 2020 3:43 pm My aunt did the same thing a year ago, and got a terrible downpour. I wouldn't do this if I were you. Building Standards; Getting It Right! It's all good. You can get both wye piece and the coupling with or without thread. The cost difference is negligible and means the plumber only has to carry the single… 1 4897 I am saying that double brick has similar thermal performance due to thermal mass effect. It will be still very interesting to see the state of your framing after 10-15… 10 29741 |