Rockit Products SA cc / Marblite is an active member of the National Spa and Pool Institute of South Africa, and supports and abides by their code of ethics.
Marblite of previously plastered swimming pools
Water is drained from the pool.
The surface of the old plaster is thoroughly cleaned ensuring that all Algae is
removed. (Stubborn Algae may be removed by painting the surface with a solution
of HTH and water. This solution is left on the surface for one day and then scrubbed
off with clean water the next day.)
The surface of the old plaster is chipped, ensuring a very rough surface is produced.
A slurry of 1 part Rockbond and 3 parts water with some Marblite is applied to the
pool surface with a block brush.
When the slurry has set the pool is plastered with Marblite.
As soon as the pool has been filled with water completely, then Calcium Chloride
flakes are added through the weir into the pool water. Add 5kg Calcium Chloride
for every +-15 bags of Marblite used. (i.e. 10kg of Calcium for +-30 bags Marblite)
The Calcium Chloride Flakes enrich the pool’s water with Calcium. This prevents
the water from drawing the Calcium out of the Marblite.
This in turn helps to prevent staining and discolouration of the white Marblite.
With Black Marblite excessive mottling and white stains are prevented.
Start up procedure of newly marble plastered swimming pools
As soon as the pool has been filled with water completely, then Calcium Chloride
Flakes are added through the weir with the filter running, into the pool water.
Add 5kg Calcium Chloride Flakes for every +- 15 bags of Marble Pool Plaster used
(i.e. 10kg of Calcium Chloride Flakes for +- 30 bags Marblite used added into the
pool’s water).
The Calcium Chloride Flakes enrich the pool’s water with Calcium. This prevents
water from drawing Calcium out of the Marble Pool Plaster.
This in turn helps to prevent staining and discolouration of White Marblite. With
Black and coloured Marblite excessive mottling and white stains are prevented.
The Calcium Hardness of the pool’s water should be +- 400 p.p.m.
No Acid should be added to the pool’s water for the first 7 days and the Ph for
the first 28 days should not be below 7.6.
Examples of swimming pools coated with Rockit products
