New Lynn · Drainlayer
Drainlayer in New Lynn
If a proposed deck would cover the gully trap, resolve its position before setting posts or ordering decking. Send the deck plan, photographs of the trap and details of the fixtures draining into it.
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We assess
A licensed Stately plumber looks at the job on site.
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You get a plain explanation and a clear quote before work starts.
Job done and tidied
We finish the work and leave the site clean.
Stately covers New Lynn. We check the existing drainage and proposed deck together, so the relocation can be planned around foundations, pipe levels and future maintenance access.
Mark the deck and proposed access
Show the deck footprint, finished surface height, stairs and proposed footing positions. Include the house wall and any doors near the gully. Mark which dimensions are fixed and which can change. A photograph with a tape measure helps explain the space, but final positions need checking onsite.
Tell us whether the trap receives kitchen, laundry or bathroom waste, and mention slow discharge or smells. These observations guide the inspection rather than determine the repair. Agree a position that can remain accessible after the deck is finished, including room to reach the grate and surrounding pipework.
Locate the drain before footing excavation
We locate the existing trap, incoming waste pipes and downstream drain connection. We check their condition, depth and levels against the deck layout. The visible grate alone cannot show the underground route. Limited exposure helps establish where the drain runs before the builder excavates nearby footing holes.
Compare the exposed route with every proposed post and footing. Agree where drainage excavation ends and foundation excavation begins. If the work approaches a public wastewater pipe, check Watercare's requirements for working near its assets before digging. Keep excavated material and machinery clear of the open drain and protected work area.
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Set the relocation scope and approvals
The new gully position needs a workable connection to both the incoming wastes and the downstream drain. We check available fall, pipe condition and the finished ground arrangement onsite. The designer resolves any conflict with deck foundations before the pipe route is settled. Moving the grate alone is not the job.
Confirm the consent position for the actual drainage alteration and deck work using MBIE guidance and the council process. Arrange any required inspections before agreeing the construction sequence. Restricted drainlaying needs an appropriately authorised person; use the PGDB register to check the authorisation of the person undertaking that work.
Lay the altered drainage before decking
Excavate the agreed route and expose enough sound existing pipe for the connection. We install the relocated gully trap, lay the connecting drain and alter the incoming drainage connections within the agreed scope. Pipe support, joints and levels are checked as work proceeds. Redundant pipe sections are removed or securely closed.
Arrange the cutover with the household so connected fixtures stay unused while their drain is open. Keep the trench accessible for testing and any required inspection. The builder should not cover the work with framing or decking until those checks are complete and any corrections have been made.
Close the trench and record access
Testing checks the altered pipework and its connections before backfilling. Record the test results and inspection outcome where inspection is required. Once released for covering, the trench is backfilled with suitable support around the pipes. Coordinate this stage with the builder before deck framing restricts access.
At handover, provide photographs and an updated drainage sketch showing the gully position, pipe route and retained access points. Identify what was repaired or replaced. Agree which exposed ground surfaces are reinstated and which areas the builder will finish. Keep the gully accessible rather than burying it beneath fixed decking.
Drainlayer: questions from New Lynn
Can an access hatch replace relocation?
Have the drainlayer and deck designer check it onsite. A hatch must provide practical access, and the trap arrangement still needs assessment against the finished deck.
Should deck footings go in first?
Locate the drainage and agree both layouts first. Otherwise a footing could obstruct the proposed pipe route or make excavation harder.
What should I keep after the trench closes?
Keep the drainage sketch, photographs, test information and applicable inspection records with the deck documents. They help locate the altered pipes during future work.
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