Earth-Seal™ is a scientifically formulated sealer for earth dams that is safe for fish, people and also wildlife.



Purchasing from our online store is quick and also easy! Simply choose your size, quantity and colour, then add it to your cart. To complete the transaction click on the view cart button and fill in your delivery details before moving to the payment screen. If you are not comfortable with online purchasing you can also give us a call or send us an email for a quote.







Earth-seal™ is a granular/powder combination of minerals designed to seal and also waterproof soil of any nature very effectively by mixing the product with the soil, and then compacting.
When Earth-Seal™ is mixed into soil in this way, and after water contacts the mixture, a complex reaction takes place, making the soil and Earth-Seal™ mixture a very effective waterproof layer.
Our eco-friendly sealer for earth dams is made of 100% natural materials that are perfectly safe, environmentally friendly, and can also be used in fish dams or other sensitive applications.
Our eco-friendly sealer for earth dams is DIY orientated and also very easy to use!

Farm dams and also irrigation dams.
Game/cattle watering dams and fish dams.
Sealing dam sites as well as waste water sealing.
Settling dams and also small ponds.
Homogeneous earth Dams as well as diaphragm earth dams.


Use 5-10KG’s of our eco-friendly sealer for earth dams per square metre of soil depending on the soil type as well as the slope of the land.
Areas that receive higher rainfall will also require more compacting than dryer areas. Customers are advised to send us a soil sample to determine the ideal dosage for their dam.
METHOD 1.
1. Scarify or plough area to a depth of 100 – 150mm.
2. Remove all foreign material such as stones, rocks, rubble as well as roots.
3. Then, the scarified soil is raked or smoothed and all clods are broken.
4. Moisture content of prepared soil is to be about 14%
5. Mark checker board style grid over entire area in 1 meter squares.
6. Into each square place 5 – 10kg`s of Earth-Seal™ powder.
7. Using a suitable implement such as a disc plough or pitch fork, plough the Earth-Seal™ into the soil, by riding up and down and then cross ways.
8. Compact this mixture and check for any imperfections as well as undertreated areas that may need more product.
Hand pack embankments or steep sides with a mixture of Earth-Seal™ and soil at a ratio of about 1 part by volume of Earth-Seal™ to 5 parts by volume of suitable moist compactable soil.
In addition, protect inlets and outlets with stone packing on top of the prepared soil.
In the event of protection being needed for the compacted layer, a loose bed of gravel can also be spread over the entire area to a depth of 100mm.
METHOD 2.
If you know where the area of the existing leak is. Then cast 10 to 20 kg`s of Earth-Seal™ for every 2 square meters onto the surface of the water directly above the suspected leaking area.
Repeat this if the leak does not stop immediately.
Moving water draws Earth-Seal™ into the fissure and creates an effective plug.
Use this method for hard surface dams, reservoirs as well as pools.

ABOUT US
Cosmo-Dec Everlasting Coatings originated in 1991, with a single product – Therma-Masta™.
Knowledge gained from manufacturing this complex and unique product allowed us to formulate new and innovative products such as Fire-Guard™, Aqua-Mite™, Aqua-Therm™ and also Clean-Air for specialty applications.
To-day, 3 decades on we manufacture more than 80 different types of construction chemicals out of our factory in Pretoria, Gauteng.
