Waste from sink and washing machine to waste downpipe adjust All aspects of plumbing questions and answers, help, tips and information

[Chiggs]

Have waste pipes from sink and washing machine (in kitchen) draining to a downpipe in 2nd floor flat (built ~ 1970s). Downpipe is located in corner. Appears to be 80mm diameter. We need to lower both drains (from sink and washing machine) and therefore connector to downpipe (for new kitchen). Any ideas on how to change and adjust fittings to downpipe, and where to get the necessary fittings?

Thanks for the help

[plumbbob]

You don't mention the most important part which is what the waste downpipe is made from. Iron, plastic, asbestos or galvanised? Anything other than plastic is difficult to connect to!

[htg engineer]

Also.... if not already plastic - I would consider changing it to plastic, quite cheap, easy enough job and looks better (my opinion).

htg