Plastering means covering the surface area with a suitable material by masonry. The Material required for Plastering is being prepared by mixing cement with sand or fat lime with sand or surkhi in addition to sufficient quantity of water. A Fine Paste of Mortar is formed after mixing all the ingredients.
The Category of Plastering are being defined according to the Ingredient.
- Cement Plastering
- Lime Plastering
- Mud Plastering
- Stucco Plastering
- Moughal Plastering
1) Cement Plastering:
Plaster is known as cement plaster, when cement is used for binding material. The Mix Ratio content of Mortar depends upon the nature of the work to be plastered. For Rich Plastering work such as Side Bathroom etc 1.3 Cement Plaster is used. On the other Hand for General Plastering of Wall 1.5 to 1.8 cement plaster mixes are used.
The joint Masonry properly raked depth 10 to 15 mm provide key to plaster for preparing the surface properly. The surface is kept wet for 6 hours with thoroughly watering. Cement Plastering may be One /Two coats as per requirement. The Mortar is dashed into uniform thickness with the help of Trowel Wooden. The Trowel wooden is removed after specified time as per Required Coats.This type of plastering specially suited for damp conditions i.e. bathrooms, etc.
2) Lime Plastering:
The surface preparation is same as Cement Plastering but the Ingredient depends upon Coats i.e for 1 Coats 1 part of lime to 1.5 parts of sand is used, proportionately the second coat consists of two parts of lime and one part of sand and 3rd coats 4 parts of lime to one part of sand. This type of plastering is suitable for internal renderings of buildings.
3) Mud Plastering:
The wall surface is first prepared as cement plastering. The cow dung and cement in proportion of 3 : 2 : 1. The mud plaster is then evenly dashed against the wall surface with a wooden float. After 24 hours, the surface is tamped. To avoid developments of cracks due to hollows, tamping is compact the layer and to drive it deep into the joints. After tamping, water is sprinkled slightly and the surface is polished with a steel trowel. A thin wash of cow dung is used where small cracks have formed. Finally the surface is given a wash of fine white earth and cow-dung. This type of plastering is done on walls of temporary sheds and country side buildings.
4) Stucco Plastering:
This is special type of plaster is used for decorative type of plastering. The first coat also known as scratch coat consists of lime plaster 12 mm in thickness and the second coat or brown coat consists of rich lime plastering in 10 mm thickness and the final coat is mixture of very fine lime and white ground stone ( marble or quartz), 3 mm in thickness. The proportion of ingredients for the first two coats is 1 part of cement to 3 parts of sand with 10% by weight of hydrated lime. The finishing coat consists of 1 part of cement and 2 pars of sand in which some coloring pigment is added or colored cement is used. Method of applying this plaster is same as described in case of cement or lime plastering. This type of plastering is suitable for external as well as internal surfaces of buildings.
5) Moughal Plastering:
It is generally applied in two coats of lime mortar by mixing lime, sand and surkhi in the ratio of 4:3:1 along with glue and powdered gull nut. The surface is well wetted and the second coat of about 1.25 mm thickness is applied when the first coat is hardened. The finished plastered surface is kept wet for 3 weeks