PAINTING WITH CEMENT PAINT
The
surfaces to be painted are prepared as already indicated. The cement paint
comes in powder form. It is manufactured from white cement with pigments and
special additives. The paint has also waterproofing qualities. Cement paint can
be applied to concrete, plaster, asbestos cement, etc. but not on gypsum
plaster, metal, wood surfaces, etc. which are hard surfaces devoid of a key.
These surfaces are to be painted with distemper.
For
painting with cement paint, the surface to be painted is first cleaned with
clean water. Before application of the paint, the surface should be thorough.
wetted to take care of the suction effect of dry surfaces. Pitting, if present
in plaster, should be made good by an initial coating of cement paint as a primer.
Preparation of cement paints for painting. The cement paint is prepared as follows. Two parts by
volume of cement are slowly added to one part of water to obtain a creamy
consistency. Allow it to stand for 5 to 10 minutes. Then again add one more
part of water to make the mix ready for painting. (The quantity of water added
for further mixes is kept the same to get constant colour from the paint.) Only
enough paint is to be mixed each time to last only for an hour or more
depending on temperature. The paint should be kept stirred during use. The
covering capacity of cement paint is about 4 m2/kg per coat.
Curing.
When using ordinary cement paint, the painted surface must be cured. The
surface should be sprinkled with water several times a day in between the coats
and at least two days following the final coat. Generally, three coats for new
works and two coats for old works are prescribed.
As
curing interior work is very difficult and it can damage electrical wiring, a
new superior cement paint, called Unique, which does not need any curing, has
been introduced into the market by Super Cem company. It is claimed that even
initial wetting of the surface is not needed for its use and it can be used as an
internal or external paint without curing after paintings.
Must read: Types
of Paint Used in Construction and Its Uses
Must read: Guidelines
of Home Painting
Must read: How to do whitewashing and colour washing
Must read: How
to Do Painting With Dry Distemper
Must read: How
to do painting of plastered walls with plastic emulsion paint
Must read: How
to do painting iron and steel with enamel paints?
Must read: How
to do painting new / old woodwork with synthetic enamel paint
Must read: How to
do polishing wood which has attractive grains?
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