Future Role of Waterproofing Membranes | Types and Uses

Waterproofing membranes provide excellent suitability for wall protection as the materials are placed in a thin layer over another material to avoid contact with water. These products exhibit tear resistance to avert water leakage or infiltration; and provide a degree of strength, resistance to differential movement and flexibility thereby providing strength to the building structures.

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waterproofing membrane is a thin layer of water-tight material that is laid over a surface. This layer is continuous and does not allow water to pass through it. For example, on a flat terrace, a waterproofing membrane could be laid above the structural slab and below the finish tiles. This will ensure that water does not seep into the structural slab. The tiles and membrane must be laid over a filler material that is sloped to ensure that water flows into sumps and drains.

Types of Membranes:

  • Sheet Based Membranes

Sheet-based membranes come in the form of rolls. These are unrolled and laid on a firm surface. One of the most common sheet-based membranes is the bituminous waterproofing membrane. This membrane is stuck to the roof surface by melting a tar-based adhesive on the membrane using blowtorches.

  • Liquid Applied Membranes

Liquid-applied membranes come to the site in liquid form, which is then either sprayed or brush-applied on the surface. The liquid cures in the air to form a seamless, joint-free membrane. The thickness can be controlled by applying more of the liquid chemical per unit area.