Plaster wall needs often repair as the building ages. The common problem with plaster walls may includes cracking, water damage, crumbling and etc. In this article we’ve discussed on procedures involved in repairing of plaster walls.

Repairing of Plaster walls

Procedures involved in repair of plaster are:

1. Identify Plaster Wall Problem

Identifying the damage that occurs on plastered surface before the type of repairing operation is carryout. This will bring the suitable technique and equipment to be exploit for better result.

Fig 1: crack wall problemĀ 

2. Setting up Ladder or Scaffolding

Scaffolding is one the equipment required for repairing of Plastered walls which will help to reach the desired height. Ladder can also be used if the height is not too high but Safety needs to be involve.

Fig 2: Setting up ladder or scaffolding

3. Preventive Measure

Preventive measures includes windows, doors, floors, furniture and other parts of the building that need protected to avoid splashed by mortar.

4. Cutting of Old Plaster

It is advisable to scrub out the existing plaster that has cracked or crumbled. The crumbled surface should be cut to a square or rectangular shape which is done to provide neat and long lasting plaster surface.

5. Preparation of Surface

After the existing plastered has been scrub out at the maximum depth of 10mm, the surface should be thoroughly wet with water and kept wet until plastering is done. This is done by the use of wire brush. the resulting dust on the surface should cleaned off. In brief, the surface is washed, cleaned and kept wet until plastering is done.


6. Application of Plaster

After the surface is prepared, the mortar should be mix at specific 1:4 or 1:6 with a good quality plaster sand is used. The plaster should then be properly applied to the surface.

Fig 6: Application of plaster

7. Curing of Plaster

Curing of plaster should be done for at least 3 days at regular interval. This is necessarily done to prevent cracking.

8. Finishing of Plaster

After the plaster is thoroughly cured and dried the surface is then painted with the color of the surrounding area. However, finishing of plaster is done to match with the old surrounding plaster.

Fig 8: finishing of plasterĀ