Skip to content
BookProNow
Overhead water tank installation: green water tanks on a raised platform
Plumber10% off30-day warranty included

Overhead water tank installation

Takes about 2 hr

Putting a new overhead tank on the roof means connecting it to the motor line, the house supply and an overflow. A verified plumber checks the base is level and strong enough, places the tank, cuts and fits the inlet, outlet and overflow connectors, and joins them to your existing pipes with new unions. The float valve is fitted and set so the tank stops filling at the right level.

Allow about two hours. The job starts from the price shown on this page. Taking down an old tank, long new pipe runs or building a base are priced and agreed first. Buy the tank and connectors before the visit, and make sure the tank can be carried up to the roof.

What's included

  • Base checked for level and strength
  • Tank placed and positioned
  • Inlet, outlet and overflow connectors fitted
  • Joins made to your existing pipes
  • Float valve fitted and set
  • Fill and leak test, plus 30-day warranty

What's not included

  • The tank, connectors and float valve, bought by you
  • Building a base or platform
  • Old tank removal and long pipe runs, quoted first

How the visit goes

  1. 1

    Check the base

    The plumber checks the platform is level and suits the tank's size.

  2. 2

    Place the tank

    The tank is set in position with its outlets facing the existing pipes.

  3. 3

    Fit the connections

    Holes are cut where needed, connectors are fitted and joined to the lines.

  4. 4

    Fill and test

    The motor fills the tank, the float is set and every joint is checked.

What we need from you

  • The tank and its connectors and float valve
  • The tank carried to the roof or a clear path for it
  • Safe roof access

Questions about this service

Will you carry the tank up to the roof?

Mention it while booking. Carrying a large tank up several floors may need extra hands and is agreed first.

Can you remove my old tank?

Yes, as extra work priced and agreed before starting.

Which connectors should I buy?

An inlet, outlet and overflow connector to suit your pipe size, plus a float valve. The plumber can confirm before you buy.

Reviews

No reviews yet. Be the first to book and review this service.