Rainwater gullies

Discussion in 'Landscaping and Outdoors' started by Richardm19, Jun 17, 2021.

  1. Richardm19

    Richardm19 New Member

    I’m mid-extension and my builder has installed four 9” square gullies to connect the rainwater down pipes to the drains. I’d prefer not to have these as they complicate my patio design. Can I simply remove them and connect the down pipes directly in to 110mm pipe using a reducer? Or are there building regs to comply with?

    For context all the other down pipes on my property appear directly connected without a gully. I have inspection chambers that can support rodding within a few meters of each gully if that helps.
  2. Severntrent

    Severntrent Screwfix Select

    If its a combined system you need trapped gulleys to prevent back odours, if its a separate system ok to connect direct
  3. stevie22

    stevie22 Screwfix Select

    Easier to cut slabs round a square gully than a round pipe.
  4. Richardm19

    Richardm19 New Member

    It’s a separate system for surface and foul.

    I don’t really want slabs cut around the gully if I can help it, IMO it will look much nicer with a narrow 4” channel of pebbles all round and the down pipe through a snug reducer in to the 110mm pipe.

    Hopefully all fine and building control don’t insist on it being rodable

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