A waterproofing membrane is usually a thin layer of water-tight material that is laid over a surface. This layer is permanent and does not let water pass through it. For instance, on a flat terrace, a waterproofing membrane could be laid above the structural slab and below the finish tiles. This will make sure that water does not seep into the structural slab. The tiles and membrane require to be layered above a packing material that is sloped to make sure that water directly flows into drains. Any water that remains as puddles over the tiles is likely to seep into the slab over time, so puddles are to be circumvented at all costs. waterproofing membranes are an important component necessary to shield the building’s structural integrity and its inhabitants.
Ideally, a waterproofing membrane is strong, flexible, tear-resistant and elastic so that it can stretch to wrap cracks and also move with the building. If the membrane is to be exposed to the sun, then it needs to be UV stable. The membrane is flexible enough to take any shape and be capable of turning up and over walls and other construction features. The practice of waterproofing dates back to the ages where the distinct techniques used were bituminous, metallic sheet, polyurethane-based and so on.
Special areas of waterproofing:
1.Basement of the building
2.Kitchen, Toilet and Bathroom
Waterproofing is substantially prevention of water and vapour ingress and helpful to seal the structural crack and move. There are different types of waterproofing such as Sheet membrane, Bentonite, liquid, cementations. Selecting the best method of waterproofing is quite pivotal, below mentioned are some of the waterproofing types.
Cementitious products are possibly the easiest waterproofing materials to use. They’re readily available from masonry products suppliers, and they’re easy to mix and apply.
Cementitious waterproofing is used in the following kind of structures:
Water Treatment Plants, Sewage Treatment Plants, Bridges, Dams, Railway & Subway Systems, Marine Cargo Ports & Docks, Parking Structures & Lots, Tunnels
Liquid waterproofing membrane
Liquid Roofing is generally the treatment of waterproofing a roof by the procedure of a particular liquid roof coating. It is suitable for all kinds of roofs, including flat, pitched, and domed. Liquid roofing normally covers the application of a monolithic, fully bonded, liquid-based coating to a roof.
Bituminous waterproofing systems are specially designed to safeguard residential and commercial buildings. Bitumen is a mixed substance of asphalt or coal-tar pitch typically made up of organic liquids that are extremely sticky, viscous, and waterproof.
Bituminous Membrane Waterproofing Method
Bituminous membrane waterproofing is one of the most popular approaches used for roofs that are low-sloped due to their verified performance.
Polyurethane is usually made up of two components, base and reactor. Polyol acts as the base, whereas isocyanide is the reactor component. The mixture of both these in a particular design ratio develops a liquid coating for waterproofing applications.