Waterproofing

National Development Company (NDC)

Waterproofing and Thermal Insulation are two important considerations for building construction and maintenance. Let’s explore each concept in more detail

Waterproofing

Waterproofing refers to making a structure or material resistant to water ingress. It is a crucial aspect of construction to prevent water penetration and subsequent damage to the building, such as mold growth, structural deterioration, and degradation of materials.

Membrane Waterproofing

This involves applying a waterproofing membrane, typically made of bitumen, PVC, or modified bitumen, to the surface of a structure. The membrane acts as a barrier, preventing water from seeping into the building.

Commonly used techniques of Waterproofing

Various techniques and materials can be used for waterproofing, depending on the specific requirements and the location of the building. Some commonly used waterproofing methods include

Cementitious Waterproofing

Cementitious coatings or membranes are applied to concrete surfaces to create a waterproof barrier. These coatings usually contain cement, sand, and special additives that enhance water resistance.

Liquid Waterproofing

Liquid-applied materials are sprayed, rolled, or brushed onto surfaces to create a seamless protective layer. These materials often consist of polymers that form flexible and durable membranes.

Bentonite Waterproofing

Bentonite clay is a waterproofing material, especially in below-ground applications. When hydrated, bentonite expands to form a watertight seal against the surrounding soil or concrete.