Rain water diverter

We have bought a couple of different rain water diverters. But, they block up easily if leaves get in them and also don’t cope with heavy rain – quite a lot of water then overflows back into the stormwater. I could add a leaf excluder, but they are about $50 each. The diverter seem a lot more complicated than they need to be – partly because they try to put excess water back into the storm water.

So I decided to try making one that combines a diverter with leaf. I want to divert all the water – I’ll change this if the garden ever gets too wet.

Here is my first try:

From Front     From Side

An empty liquid fertilizer bottle, a small piece of gutter protector, a grey water hose and some silver tape. Cost – almost nothing.

I made one mistake in that I cut right through the downpipe and then found that it was better to have it flattened so it supports the top part of the downpipe (there isn’t a bracket above the cut off bit of downpipe to hold it up).

I think that the hose I’ve used to take away the water may not be large enough – if the bottle overflows, I’ll just have to get a larger hose and cut some of the neck of the bottle away so it fits.

We have a thunderstorm here now – so it is being tested. In very heavy rain the hose is too small to take away the water. I also need to attach the gutter guard better – it has come off. Once the rain eased back to a more normal level the smaller hose was sufficient.

  1. I would like to know what diverters you have tried and with what success

  2. The one I didn’t install is a nylex ‘rainwater diverta’.

    The one we have installed is a round profile one with a hose fitting at the bottom – don’t know what brand – it has a yellow cone inside to direct the water to the outside of the pipe so that the centre can act as an overflow in heavy rain. The problem with it is that it overflows even when it isn’t raining very hard.

  3. I bought a Nylex Rainwater Converta before Christmas but started to get nervous (apart from having to cut my downpipe properly!) because I saw the rain “bouncing” off the inside leaf guard and not much coming out of the hose. But then reading Brenda’s “review” of the round one (my other option) that didn’t seem brilliant either. It looks like only a large open pipe diveting to the garden or tank will capture all of the water anyway. But then there are plenty of empty tanks now because there’s no rain to fill them. Bit of a conundrum, really. But I think I’ll stay with the Nylex and see what’s what. I got it for $21.40 from Bunnings

  4. Alan I agree – all the diverters seem to loose more water than they put into the pipe.

    After more experimenting, I’m gradually changing to just have large hoses coming straight from the downpipe. My diverter made out of bottle didn’t survive some heavy showers – I would have had to find a better way to secure it to the downpipe. I think the diverters are good if you need to have excess water go back into the storm water. So far our soil has been able to absorb even the heaviest rain without any overland flow, so we don’t need to use storm water. It wouldn’t be hard to change back to a pipe down to the storm water if the ground got too wet.

  5. My problems is lives clogging up pipes which haven’t been cleaned since I bought the house 25 years ago. The house was built in 1970 with the old imperial 2″ x 4″ rectangular downpipes. My solution was this:

    Diverters Allan and Brenda are talking about must be one of these:

    or this:


  6. This rain water diverter is awesome and very useful.

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