POINTING & PLASTERING

POINTING & PLASTERING 

• Pointing : Finishing of masonry joints 
• Plastering : finishing for exposed surface 

PROCEDURE FOR POINTING AND PLASTERING 
• Scrapping out 20 mm 
• Applying water jet to remove loose particles 
• Provide 3 hrs resting period 

• Mortar used 
• Cement mortar 
• Interior 1:3 - 1:4 
• Exterior 1:4 - 1:6 
• Lime mortar 1:2


TYPES OF POINTING 

1. BEADED POINTING 
• architectural importance 

2. FLUSH POINTING 
• thick new mortar layer applied over old layer 

3. RECESSED POINTING 
• 5mm recess is provided 

4. STRUCK POINTING 
• 10 mm inside 5. 

5. V POINTING 




TOOLS USED IN PLASTERING 

1. trowel 
• to apply mortar between 2 course 
• Bullnose trowel : apply on external surface 
• Pointed trowel : corners 

2. Float : to check verticality 

• Screed : small projections constructed for plastering purpose 

Defects in plastering 

1. Blistering : swelling out of small patches 

2. Crack : formation of air cracks 

3. Efflorescence : presence of algae / alkalis 

4. Crazing : extended air cracks over a large surface 

5. Flaking : formation of loose materials 

6. Pealing : pealing out of plastered surface 

7. Rust stain : reaction of iron materials with mortar 


PREVIOUS YEAR QUESTIONS BASED ON PLASTERING AND POINTING



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