Johannesburg, South Africa
Flexible water storage, engineered for drinking water.
FlexiDam supplies 720gsm food-grade PVC liner and fabricates it into flexible water storage bladders for potable supply, agriculture, mining and industry across South Africa.
- 720g/m²
- Product weight
- 3m
- Roll width
- 50m
- Roll length
- 0.58-0.62mm
- Thickness
Food grade PVC
AS/NZS 4020 approved
SANS & ISO tested
Made for South African conditions
Come and see us
FlexiDam will be at KragDag 2026.
Come and look at the membrane and a finished tank in person, and talk sizes with us on the stand.
- 6 to 8 August 2026
- 08:00 to 17:00 daily
- Diamantvallei, Cullinan, Gauteng
What we supply
The membrane, or the finished tank.
One material, two ways to buy it. Fabricators take the liner by the roll; everyone else takes a tank built from it, purchased outright or rented for the duration of a job.
Fabricated flexible tanks
Pillow tanks and bladder reservoirs welded to your site's dimensions from the same 720gsm potable-grade membrane. Closed to light and air, so no algae and no evaporation.
- Welded, not stitched: a single continuous membrane
- Sized to the footprint you actually have
- Folds flat for transport and redeployment
- Available to buy, or to rent for temporary work
720gsm liner, by the roll
Product code 720 PW 300. Food-grade plasticised PVC over a woven polyester base, supplied in 3 m × 50 m rolls on core for fabricators running their own weld shop.
- AS/NZS 4020 approved for drinking water contact
- Published SANS and ISO test figures to design against
- Gloss emboss finish, multilayer coated
Why the material matters
Seven things a water storage membrane has to get right.
Every claim below is a line on the datasheet, tested to a published SANS or ISO method.
Food grade PVC
Formulated for safe contact with drinking water.
Australian Water Board approved
Certified to AS/NZS 4020 for products in contact with drinking water.
Woven polyester reinforcement
A high-strength base fabric carries the load, not the coating.
Tear & tensile resistance
2500 N/50mm warp tensile strength; 300 N warp tear strength.
Superior weldability
Welds cleanly for custom fabrication, at 40 N/25mm weld adhesion.
Multilayer coating
A multilayer coating process for improved waterhead resistance.
Gloss emboss finish
Durable surface that stays easy to clean.
The full datasheet, published.
Test methods, units, warp and weft figures. Nothing held back for the sales call.
Read the specificationsApplications
Where FlexiDam is put to work.
From a farm's irrigation buffer to emergency potable supply on a mine site.
- Water storage bladders
- Emergency water storage
- Firefighting reserve
- Agricultural reservoirs
- Mining water storage
- Industrial containment
- Flexible water tanks
- Temporary storage
Built for reliability. Made for water.
Tell us the volume, the site and what you are storing. We will come back with a specification and a price.