Case 3
Navigation
- Introduction
- Causes of Defects
- Good Practices
- Standards
- Maintenance and Diagnostics
- Remedial
- Similar Cases
- References
Good Practices
Plastering
Good workmanship is essential:
- Installation of the bar line after the completion of each stage of plastering to ensure a good joint between each panel of installation.
- If the background are known to contain appreciable amounts of soluble salts (especially sulphates) and may remain wet for prolonged periods of time, the plastering may deteriorate due to chemical action between the salt and cement in the plastering or in the mortar joints. Damage may result during the crystallization of soluble salts. The limits for soluble salts given in BS 3921 provide a useful guide for clay bricks.
- The leaching of soluble salts can be reduced by the use of sulphate-resisting Portland cement for the mix for plastering.
- The use of water resistant ready mix may also reduce the occurrences of the efflorescence.