Basics in Building Construction

Basics in Building Construction 4(2+2)

Lesson 05 : Damp Proofing Treatments

Damp Proofing Treatment To Walls

Wall can get damp due to penetration of moisture from its external face to internal one, due to porosity of bricks and mortar joints. Various treatments given to exposed surface of walls to prevent dampness include pointing, plastering and painting. Plaster made out of cement, lime, and sand mixed in proportion of 1:1:6 serves as very effective rendering to protect the wall against dampness in normal weather conditions. In areas of heavy rainfall cement plaster 1:4 (1: cement: 4: sand) mixed with water proofing compounds like Pudlo, Permo, etc. serves the purpose effectively. In exposed brick work dampness can be prevented by painting the surface with water proof cement paint or with colorless liquid waterproofing compound.