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Repairing of plaster walls is needed from time to time as the edifice ages. The most common problem with plaster walls is crumbling, water damage, cracking or pulling away from the lath behind it. Repairing process of plaster walls is presented in the following sections.

Contents:

  • Repairing of Plaster walls
    • i. Identify Plaster Wall Problem
    • 2. Setting up Scaffolding
    • 3. Protective Measure
    • four. Cut of Onetime Plaster
    • five. Preparation of Surface
    • 6. Awarding of Plaster
    • vii. Curing of Plaster
    • viii. Finishing of Plaster

Repairing of Plaster walls

Procedures involved in repair of plaster are:

i. Identify Plaster Wall Problem

The blazon of harm shall be specified prior to the commence of repairing operation. In this manner, the most suitable technique and equipment can be employed to repair the harm and best outcome could be accomplished. Tabular array 1 provide types of plaster wall problems and their causes, and Fig.1 to Fig.3 shows number of plaster wall problems that demand to be repaired. Tabular array 1 Common types of plaster wall problem and their causes

Common types of plaster wall problem Cause of the plaster wall problem
Cracks Hairline cracks due to wet evaporation, delaminating fissure because plaster pulling abroad from the lath behind it, and Settlement Cracks because of building settlement.
Damage activity inside the habitation like a collision due to moving a piece of furniture
Baking improper slaking of lime particles in the plaster
Flaking poor bond
Discoloration Water seepage

Delaminating cracks in plaster wall

Fig. one: Delaminating cracks in plaster wall

Hairline cracks in plaster wall

Fig. 2: Hairline cracks in plaster wall

settlement cracks

Fig. three: settlement cracks

2. Setting up Scaffolding

Scaffolding is required for the proper execution of the repair work should be erected. Ladder can also be used in example of scaffolding if the piece of work can be done safely.

Setting up scaffolding or ladder

Fig. iv: Setting upward scaffolding or ladder

3. Protective Measure out

Doors, windows, floors, articles of furniture etc. and such other parts of the building should be protected from being splashed past mortar.

4. Cutting of Old Plaster

The mortar of the patch, where the existing plaster has cracked, crumbled or sounds hollow when gently tapped on the surface, is starting time removed. The patch is be cutting out to a square or rectangular shape at position where repairing is needed. The edges of cut plaster is fabricated under cut to provide a cracking joint.

five. Training of Surface

The masonry joints which become exposed afterward removal of old plaster is raked out to a minimum depth of x mm in the example of brick work and twenty mm in the case of stone piece of work. The raking is carried out uniformly with a raking tool, and loose mortar is dusted off. The surface is and then thoroughly done with h2o, and kept wet till plastering is commenced. In example of physical surfaces, the onetime plaster is thoroughly scrubbed with wire brushes after the plaster had been cutting out, and pock marked the surface is roughened by wire brushing, and all the resulting dust and loose particles cleaned off. The surface is washed and cleaned and kept wet till plastering is commenced.

Surface preparation

Fig. 5: Surface preparation

6. Application of Plaster

Mortar of specific mix such as 1:four or 1:six with the expert quality plaster sand is used. Later the plaster has been applied to the surface, finishing of plaster is washed to lucifer with the quondam surrounding plaster.

Application of plaster

Fig. half-dozen: Application of plaster

7. Curing of Plaster

Curing of plaster is necessary to prevent cracking. It should be done for at least three days at regular interval.

viii. Finishing of Plaster

Afterwards the plaster is thoroughly cured and dried the surface is and then painted with the color of the surrounding surface area. Read More than: Special Plastering Materials for Different Purposes Used in Building Structure Types of Plaster Finishes and External Rendering for Buildings Rate Analysis of Plastering with Cement Mortar