Plastering Thickness, As Per IS code for plastering 2402 : 1963

Plastering Thickness – Thickness of Plastering is usually 12MM, i.e.; 0.5 Inch. The recommended thickness of cement plastering is given below.

  • Recommended thickness of plastering for brick walls is 12 MM, 15 MM or 20 MM.
  • Recommended thickness of plastering for RCC surface is 6 MM and 10 MM.
  • 10 MM thick cement plaster is done underside of the RCC ceiling/ roof.
  • 12 MM thick cement plaster is done where the plain surface of brick masonry is plastered.
  • 15 MM cement plaster is required on the rough side of 9” and 4.5” wall.
  • 18 MM thick cement plaster with neat cement slurry is required for making ‘Dado’ with the cement concrete flooring.
  • 20 MM thick cement plaster is done in two coats in some cases on rough side of wall or according to the design requirement.
  • 6 MM thick cement plaster is done on the RCC surface where it is required.

Plastering thickness as per IS Code

IS code for Plastering :- The IS code for plastering is 2402: 1963, and the recommended cement plaster thickness in PWD, CPWD, and all private work in building construction in India varies depending on the type of plastering. Recommended thickness of plastering for brick walls is 12 mm, 15 mm or 20 mm.

Thickness of Plaster :- The thickness of plaster varies from 6mm to 25mm, depending on the type of plastering. External wall plaster should be 15mm thick single coat, 18mm (10+8), 20mm (12+8), and 25mm (15+10) thick double coat.

Internal wall plaster thicknesses of 10mm, 12mm, and 15mm are recommended for single coats. Concrete wall plaster should be 6mm, 10mm, or 12mm thick with a single coat, and ceiling plaster should be 6mm thick with a single coat.

External Wall Plastering Thickness

External plastering thicknesses of 15 mm to 25 mm are recommended. 15mm, 18mm, 20mm, and 25mm will be available. External plastering is done in single coats of 15mm, 18mm, 20mm, and 25mm, and is done in double coats of 18mm, 20mm, and 25mm.

In 18 mm thick plastering, the first single coat should have a thickness of 12 mm, and the second coat should have a thickness of 6 mm (12mm + 6mm).

In a 20 mm thick external plastering, the first single coat should have a thickness of 12 mm, and the second coat should have a thickness of 8 mm (12mm + 8mm).


In a 25 mm thick external plastering, the first single coat should have a thickness of 15 mm, and the second coat should have a thickness of 10 mm (15mm + 10mm).

Internal Wall Plastering Thickness

Thickness of Internal Wall Plastering – Internal brick walls have a flat surface that requires more smoothness and decoration. Single coats of 10 mm, 12 mm, and 15 mm internal wall plastering are used in construction.

Concrete Wall Plastering Thickness

Thickness of Concrete Wall Plastering – A load-bearing structure beam and column are used to construct a concrete wall. In civil engineering, concrete wall plastering thicknesses of 6 mm, 10 mm, and 12 mm are recommended for use in building construction.

Roof or Ceiling Plastering Thickness

Thickness of Roof or Ceiling Plastering – The concrete ceiling on the bottom face of the roof slab requires a very thin layer of plaster material to increase its smoothness; the recommended thickness of ceiling plaster is a single coat of 6mm thick.

Plastering Thickness

Thickness Of Plastering
Plastering Thickness As Per Is Code
Brick Wall Plastering Thickness
Plastering Thickness For Wall
Ceiling Plastering Thickness
Inner Plastering Thickness
Plastering Thickness Calculation
Cement Plastering Thickness
Wall Plastering Thickness
Minimum Thickness Of Plastering
Thickness Of Wall Plastering
Internal Plastering Thickness
External Plastering Thickness
Plastering Thickness For Brick Wall
How Much Cement And Sand Required For 12mm Thickness Plastering
Outer Wall Plastering Thickness
Plastering Thickness For Walls
Inner And Outer Plastering Thickness
Plastering Thickness And Ratio
Plastering Thickness Of Wall
Thickness Of Plastering In Wall
Internal And External Plastering Thickness
Thickness Of External Plastering
Outside Plastering Thickness
Plastering Thickness Recommended

What shall be the thickness of cement plaster for boundary wall for both the faces?

External plastering thicknesses of 15 mm to 25 mm are recommended

Er. Md. Shahin Akhter

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Md Shahin Akhter is a Civil Engineer from MIT and has more than 5 years of experience in Civil Engineering and Construction Department. Md Shahin Akhter is Civil Engineer in Nagar Parishad (Municipal Council), Supaul. He is Webmaster and Founder at ProCivilEngineer.com Civil Engineering Website.