What can cause kitchen drainage problems?
Sink wastes run to a ‘trap’ This will usually be a section of pipe work that comes apart just below the drain point on your sink. This trap is a low point in the system so heavier items can collect here and stop them from blocking the main system. So any heavy stuff you wash down your drain will collect there. Also fat washed down the drain will congeal here, making a plug of solid fat bound with any existing debris in your drain.