Plastering involves covering rough or uneven surfaces with plaster, a material made of lime or cement mixed with sand and water, to provide a smooth, durable, and protected surface. There are several types of plaster but commonly used ones include cement plaster and lime plaster. The plastering process generally involves three steps - preparing the surface, applying a rendering coat, and applying a final coat, with two or three coats used depending on the work. A good plaster should be economical, hard, adhere firmly, resist moisture, have good workability, and be applicable in all weather conditions.

1. Plastering
073 BCE 079
Mani Shrestha

2. Plastering
Plastering is the covering
of rough and uneven
surface in the
construction of a house
or building with a plastic
material called PLASTER.
In general plaster is made
of lime or cement
concrete along with sand
and water

3. Why do
plastering?
• To provides a smooth and finished
touch
• To provide regular clean and durable
surface
• To preserve and protect the surface
• To conceal defective workmanship
• To provide satisfactory base for white
washing, color washing
• To protect surface from effects of
natural agencies

4. A good plaster is
• Cheap and economical
• Hard and durable
• Should adhere to surface firmly in
all weather conditions
• Should effectively resist moisture
entry from surface
• Should possess good workability
• Should be able to apply during all
weather conditions

5. Plastering
recommendations
• Mix of 1:6 ( Cement : Sand) for building
sheds and structures of less
importance
• Mix of 1:4 for walls of residental
buildings
• Mix of 1:3 for ceilings

6. Types of plaster
• Lime plaster (lime +sand+ water)
• Cement plaster (Cement + sand +
water)
• Mud plaster (earth+ sand+ straw+
water)
• Surkhi plaster ( surkhi + sand+ water)
• Bajra plaster (dal + lime + earth +
water)

7. Process of Plastering
1. Preparation of surface
background
2. Application of rendering coat
3. Application of final coat
Plaster may be applied in 1,2, or 3 coats. For ordinary
works 2 coats is applied and for superior works, 3 is
applied.

8. Procedure for
Plastering1. Rack mortar joints to a depth of 20
mm
2. Clean the surface and water it well
3. Use stiff wire brush to remove all
dust
4. If surface to be plastered is very
rough and uneven, apply preliminary
coat before first coat .
5. Fix dots by using small amount of
plaster on a surface of 2m x 2m . This
helps to lay a uniform thickness of
plaster
6. Apply about 10-12 mm thick coat of
plaster
7. Finish the surface properly by using
a floating ruler