A sealer for dams

Damit Dam Sealer is a completely new product to the market, a dam sealer which is an advanced, non-toxic, polymer powder which can be used to seal leaking earth dams and ponds. 

Damit sinks to the bottom of the dam. The water pressure forces the polymer down into cracks and crevices which effectively slows and stops the leak. 

The Damit polymer is applied to a leaking dam by scattering the powder across the surface of the water either by hand, using a fertiliser spreader, by boat or by agricultural drone. 


Damit is designed with a positive charge which draws it downward through the water towards the bottom of the dam. The water pressure (hydrostatic pressure), which causes the dam to leak, forces the polymer down into cracks and crevices as it sinks to the bottom of the dam. Once activated with water, the polymer will expand in size and bind to other polymer particles to form larger groups of particles, which effectively slows and stops the leak. 

The polymer will continue to expand over several hours and forms a flexible plug that withstands water pressure. The positive charge of the particles will also attract any silt and suspended matter in the water downward to the bottom, which acts to embed the polymer within the soil structure and minimise any disturbance or movement of the polymer that may be caused by future water inflows. 

Damit Dam Sealer is insoluble and will form a long-term plug-in cracks and porous soils. The polymer stays active when wet and can withstand continuous wet and dry cycles to accommodate rising and falling water levels due to seasonal water level variations in the dam or pond. The polymer is totally safe and approved for use with potable water and will not harm humans, fish, aquatic plants or animals. 

Damit Dam Sealer will eventually break down to form a harmless mix of water and carbon dioxide over time, but the seal will be permanent. 


Eco friendly – non-toxic to plants and animals 

No need for heavy equipment 

No need to empty out the water 

Can target specific areas 

Easy to apply 

Can be used across a wide range of sands and soils 

Resistant to hoof damage. 

Areas of use 

All dams – rural, farm, garden and parks 

Golf courses 

Levee banks 

Artificial wetlands, aquaculture 

Storm-water and irrigation channels 

Storage reservoirs. 

Not suitable for concrete surfaces such as cement dams. 

For more information, Call: 087-802-0300 or 086-199-5036 | Visit: www.aquaplastech.co.za or www.damitdamsealer.co.za 

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