Replacement Tank Liners and Roofs — Priced From Your Measurements
An old, torn or brittle liner does not mean a new tank. We make replacement liners for steel tanks and concrete reservoirs of any brand, and fit roofs to open-top tanks. Send us three measurements and a price comes back in minutes.
Any brand · Steel tanks or concrete reservoirs · Supply only or supply and fit · Made in Pretoria since 1992
The three numbers we need
Nearly every quote we cannot price on the spot is missing one of these three. Take them before you call and your price comes back the same minute.
D — Inside diameter
Wall to wall, measured inside the tank, across the widest point.
H — Wall height
From the floor to the top edge of the wall.
F — Freeboard
From the top of the wall down to the water line you actually run at. Not sure? Say so and we will use the standard 200 mm.
Helpful, but not essential
- Positions of the inlet, outlet, overflow and scour.
- A photograph taken from inside the tank, and one from outside.
- The make of the tank, if you know it.
- Whether you want a liner only, or a roof as well.
Three liner grades
We quote one of three, depending on what the tank does:
| Grade | Weight | Typical use |
|---|---|---|
| Standard | 550 g | General water storage — irrigation, stock watering, process and fire reserve. |
| Durable | 750 g | Heavier duty, for harder-working tanks and harsher sites. |
| Potable | 850 g | Drinking water. The 850 g is the only grade certified to AS/NZS 4020. |
All three are reinforced PVC with heat-welded seams, cut and welded to your tank’s own diameter and height, and resistant to UV, algae and bacterial growth.
If the tank supplies drinking water, you need the 850 g. It is the only one of the three certified to AS/NZS 4020, so tell us what the water is for and we will quote the right grade rather than the cheapest one.
What happens when you send them
1. You send the measurements
By the enquiry form, by e-mail or to your rep. Photographs help.
2. We check and sign them off
This is the step that protects you. A liner welded to a wrong measurement fits nothing and cannot be altered afterwards, so we confirm the numbers before we quote rather than after.
3. Your price comes back in minutes
Not days. Once the measurements are signed off the quote is immediate.
Manufacturing time is quoted together with the price, because it depends on the grade and the size of the liner.
Any tank, any brand
Steel tanks
Bolted, corrugated or flat-panel. Galvanised or Zincalume. If the shell is sound and the liner has failed, the liner is the repair.
Concrete reservoirs
Lined properly rather than patched again. A welded membrane puts a continuous barrier between the water and a wall that has already proved it leaks.
We did not have to build it to re-line it.
Roofs and covers for open-top tanks
An open tank loses water to evaporation and takes in dust, leaves, birds and sunlight — and it is the sunlight that grows the algae.
Roof options: galvanised, Zincalume, aluminium dome and colour-coated.
Supply only, or supply and fit
Supply only
We manufacture to your signed-off measurements and deliver. You or your own contractor fit it.
Supply and fit
We measure, manufacture and install. Fitting is a South African service.
Both are quoted separately, so you can see what the fitting costs and decide.
Where we work. South Africa, and across SADC — Botswana, Eswatini, Lesotho, Malawi, Mozambique, Namibia, Zambia and Zimbabwe. Across the border we supply the liner ready to fit, shipped from our Pretoria factory; measuring and installation are South African services. Send your measurements either way and the quote comes back the same.
What is covered
Every replacement liner carries a 12-month material warranty against defects in the liner itself.
We do not warrant the structure it goes into, for the straightforward reason that we did not build it. What we do instead is look at the tank at measurement stage and tell you if we think the structure will not hold up — before you spend money on a liner for it.
Questions we are asked
Can you really line a concrete reservoir?
Yes. On a concrete reservoir that has started to leak, a liner is usually a better answer than another round of patching, because it puts a continuous welded membrane between the water and a wall that has already proved it leaks.
What if I do not know my measurements?
Send photographs and whatever you do know. We will tell you exactly what else we need and how to measure it.
Do you work outside Gauteng?
Yes. Aquadam has representatives in all nine provinces.
How long does it take?
We quote the manufacturing time together with the price, because it depends on the grade and the size of the liner.
Does the tank have to be drained?
Yes. The tank must be drained, clean and dry before a liner is fitted. We will tell you what preparation is needed when we quote.
Is the liner safe for drinking water?
The 850 g potable grade is certified to AS/NZS 4020 for drinking water, and it is the only one of the three grades that is. If the tank supplies drinking water, tell us and we will quote the 850 g.
You did not make my tank. Does that matter?
No. We make liners to measurement, so the brand of the tank does not change what we do.
Can you add a roof to a tank that never had one?
Usually yes, on a steel tank. On a concrete reservoir we check what the walls can carry first, and that check forms part of the quote.
Send us your measurements
Inside diameter, wall height, freeboard. A price comes back in minutes.
Aquadam · 311 Alwyn Street, Waltloo, Pretoria · Made in South Africa since 1992