Water Tank Pads

Everything you need to know about designing, constructing and maintaining a water tank pad.

Please remember: 

Any damage to your water tank that occurs due to the water tank pad not meeting the minimum requirements outlined below will NOT be covered by your warranty.
All repair costs are quoted on a case-by-case basis and can be substantial.

Important Things to Consider

1. Water tank pads MUST be level. Sloping pads will VOID your warranty. Water will travel to the lowest point and place an increased amount of pressure on a single point, this will eventually result in failure over time.

2. All sections of the water tank MUST be fully-supported. The weight of the water will concentrate into the unsupported sections of the tank, pull the base away from the wall and destroy your seal. Damage can vary from a small leak up to structural damage that may not be repairable.

3. Coast & Country Water Tank bases are made from BlueScope’s Double Sided AQUAPLATE®, which means there is a polymer film bonded to the steel that creates a separation between the steel and the base. The material used to construct the pad MUST be smaller than 3mm (crusher dust, concrete or sand) so as not to damage the base of your water tank.

4. It is not difficult to distinguish when a faulty pad has damaged a water tank. There is clear impact damage internally and externally.


Concrete Paver Pad
Concrete pavers can be used as a base for our
slimline, modline, square & round water tanks.
An area must be prepared before laying your
concrete pavers must meet the following
requirements before laying your pavers; the
area must first be cleared, dug down to firm
ground and levelled, concrete and sand spread
out with a minimum thickness of 75mm.
You can now lay your pavers, once laid ensure
you water the area in order to set the concrete
(ensure your hose is on the spray function as
the jet function will dislodge the concrete and
sand). You may place your tank on the pad at
this stage, but it is recommended that you only
fill your tank up to 100mm (roughly two ribs)
for a minimum of 48 hours to allow the pavers
to settle and set.

Crusher Dust
Crusher dust pads are a great cost effective
option for our round tanks. You must NOT use
a crusher dust pad for any tank shape other
than round.
A crusher dust pad must meet the following
requirements; be a minimum of 100mm thick
with particles no larger than a 3mm
diameter, minimum 100mm greater diameter
than the tank, have a border of treated pine
(or equivalent) and be compacted and level.
It is essential that a border is placed around
the pad as it prevents erosion from heavy
rain, or burrowing animals. The tank may be
filled at any stage after placing it on the pad,
however be mindful not to dig the edges of
the tank into the crusher dust when placing it
on the pad. It is recommended that a coarse
aggregate is placed over the exposed area of
the crusher dust, this will help prevent

Concrete Pad
Coast and Country Water Tanks highly
recommends using a concrete pad for all
of our water tanks as it provides the best
support for your water tank.
The pad needs to be a minimum of
100mm wider and 100mm longer than
that of the water tank.
If the area is sloping, it is Coast and
Country Water Tanks recommendation
that you consult a builder or engineer
before attempting to build your concrete
pad. A concrete slab will need time to
cure, please allow a minimum of five days
before placing your water tank on the pad.