I'm looking to tidy up the external waste pipes in my property, I've attached a photo which should make it a bit easier to explain.
I have a 50mm cast iron down pipe with a hopper at the top collecting waste from the bathroom. This pipe ends just above the drain. There are also 2 waste pipes going into the drain from the kitchen sink and washing machine.
What I'd like to do is replace the cast iron pipe completely, still use a hopper at the top to keep it simple. At the bottom I want to combine the two waste pipes with the new downpipe, that goes straight into the drain.
I'm struggling to find the necessary pipes, anything I find with a hopper is for guttering only so no options to join a 40mm waste. The only pipes I can find with a 40mm waste are 110mm soil pipes which seem excessive just for grey water waste.
I was pointed to OSMA Soil pipes, but they seem really expensive.
Are there any other options?
I have a 50mm cast iron down pipe with a hopper at the top collecting waste from the bathroom. This pipe ends just above the drain. There are also 2 waste pipes going into the drain from the kitchen sink and washing machine.
What I'd like to do is replace the cast iron pipe completely, still use a hopper at the top to keep it simple. At the bottom I want to combine the two waste pipes with the new downpipe, that goes straight into the drain.
I'm struggling to find the necessary pipes, anything I find with a hopper is for guttering only so no options to join a 40mm waste. The only pipes I can find with a 40mm waste are 110mm soil pipes which seem excessive just for grey water waste.
I was pointed to OSMA Soil pipes, but they seem really expensive.
Are there any other options?