MAJOR DEFECTS IN CONVENTIONAL PLASTER

CONVENTIONAL DEFECTS WITH REASONS
Plaster is applied on masonary soaked with water and cement slurry. This gives a mediocre adhesion. Wet masonry shrinks on drying much more than plaster resulting in bulges of the plaster in which air gaps are formed. This gets heated in the sun and expands pushing the plaster outwards causing it to crack. Rain water leaks through these cracks showing up as damp patches on the inside.
Fresh RCC surface is made rough by hacking with a hammer. The vibration caused by hammering on green RCC disturbs the aggregate and the steel bars making tiny voids. This reduces its strength and life.
Cement slurry is thrown on the masonry before plastering. As this slurry is thrown at random (not applied over the whole surface) the grip of the plaster to the masonry is not uniform.
Mortar is thrown with a towel. Throwing mortar traps air inside the plaster, resulting in plaster of low density.
Water added is approximate. Excess water runs off causing sagging of the plaster, less water traps air.
If mortar has correct water. Some water runs off drying the plaster, this interferes with the initial setting which is crucial for cement.
Plaster is sponged. Sponging wet plaster removes surface cement, this weakens the top plaster.
Holes are made in the masonry for supporting scaffolding. These holes are filled with mortar while finishing the plaster. This mortar settles leaving an empty space above, also outside uniformity is lost.
Between beam bottom and top of masonry. The bonding between these two is not complete, as filing is done only from the sides, the center remains empty, and cracks appear on the adjoining surface.


TOTAL WATERPROOFING CO.
PLASTER, LASTING SOLUTIONS


REMEDIES HOW PENTA COLOR PLASTER WORKS
Plaster is applied to dry masonry. Very high adhesion is obtained by applying primer and bridge technique.
Concrete surface is cleaned & roughened mechanically. High adhesion on concrete is achieved by the above technique.
Cement slurry is not used. A primer is sprayed evenly over the entire surface, to obtain uniform grip.
Mortar is not thrown. Mortar is applied with a spray gun, hence extremely compact.
The mortar is mixed in correct proportion only. Mortar with correct water and plasticizer retains water for curing, the plaster does not sag, contains no air bubbles, making it extremely dense.
Correct mortar mixed with plasticizer. This mortar has enough water in the plaster for complete curing. Only loss of surface water due to evaporation needs to be made up.
Sponging is not done. A spray with a pneumatic fun makes a rough sandy finish, so hotels are filled at the start of plaster resulting in a uniform perfect finish.
Holes in masonry are filled before commencement of plaster. Our metal scaffolding does not need mid way suppports, so holes are filled at the start of plaster resulting in a uniform perfect finish.
All spaces below the beams are filled. These and all other hollow spaces in masonry are filled by pneumatic injection of cement slurry with an additive after the third layer.

This plaster in 4 coats (without colour) has the option of accepting any exterior paint.

For old contructions, existing plaster, if strong is re-bonded and re-coated.

Total Waterproofing Co., 434, Fatorda, Marg„o, Goa 403 602.      Tel: 2741187, 2742427,  Mobile: 9881095008
     Email: totalwaterproofingcoltd@gmail.com