Waterproofing for Residential, business, commercial and Industrial buildings


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Waterproofing – all structures like homes, walls, buildings, industrial and commercial properties have an underground area and a roof area. Both areas are exposed to water whether it be directly from rain or water vapor that can infiltrate these areas.

Roofs are mainly affected by rain but underground standing water and water in the ground can slowly creep into the structural areas of the building or wall. These can have a devastating effect on the structure itself over time, and you have probably seen this many times over.

A common method to do waterproofing is applying the waterproofing materials to the interior and exterior of the walls including the floors and roof to complete a watertight seal against ground contact.

This can be done during the construction of the building or later on as a retrofit application for remedial waterproofing.

Waterproofing Structures

Waterproofing structures requires a high level of skill and planning, because ground moisture can come in many forms and affect structures in different ways. For instance, minor seepage can cause infiltration and damage, more so than water that exerts a palpable pressure on the structure.

One concern that a waterproofing contractor often encounters in waterproofing systems is the inevitability of dampness, particularly in old structures, and how to manage it. This may involve setting up proper ventilation spaces to allow moisture to move or “breathe” within the structure.

The presence of pipes, drainage systems, and electrical cables that are attached to the building, and how to reroute these elements without adversely affecting the structure, is also another issue during waterproofing.

Waterproofing Contractors

Waterproofing engineering structures require a highly-skilled waterproofing contractor to deliver a feasible design and installation of the waterproofing system. Needless to say, experience matters in hiring a waterproofing contractor, and certifications and credentials should also be a big reason for choosing one.

Most contractors today understand the importance of waterproofing a home. Waterproofing from the beginning of the home’s construction can save money, damage and frustration in the future. Leaving a concrete area untreated leaves room for water seepage. The natural settling of the house over time will undoubtedly cause cracks and crevices in many concrete areas. These cracks give way to a host of problems caused by water pooling.

Waterproofing and Damp Proofing

Waterproofing is the process of making an object or structure waterproof or water-resistant so that it remains relatively unaffected by water or resisting the ingress of water under specified conditions. Such items may be used in wet environments or under water to specified depths.

Water resistant and waterproof often refer to penetration of water in its liquid state and possibly under pressure, whereas damp proof refers to resistance to humidity or dampness.Permeation of water vapor through a material or structure is reported as a moisture vapor transmission rate.

Waterproofing During Construction

In construction, a building or structure is waterproofed with the use of membranes and coatings to protect contents, and structural integrity. The waterproofing of the building envelope in construction specifications is listed under 07 – Thermal and Moisture Protection within MasterFormat 2004, by the Construction Specifications Institute, and includes roofing and waterproofing materials

Creating a Waterproofing Envelope

In building construction, waterproofing is a fundamental aspect of creating a building envelope, which is a controlled environment. The roof covering materials, siding, foundations, and all of the various penetrations through these surfaces must be water-resistant and sometimes waterproof.

Roofing materials are generally designed to be water-resistant and shed water from a sloping roof, but in some conditions, such as ice damming and on flat roofs, the roofing must be waterproof. Many types of waterproof membrane systems are available, including felt paper or tar paper with asphalt or tar to make a built-up roof, other bituminous waterproofing, ethylene propylene diene monomer EPDM rubber, hypalon, polyvinyl chloride, liquid roofing, and more.

Waterproofing Walls

Walls are not subjected to standing water, and the water-resistant membranes used as housewraps are designed to be porous enough to let moisture escape. Walls also have vapor barriers or air barriers. Damp proofing is another aspect of waterproofing. Masonry walls are built with a damp-proof course to prevent rising damp, and the concrete in foundations needs to be damp-proofed or waterproofed with a liquid coating, basement waterproofing membrane (even under the concrete slab floor where polyethylene sheeting is commonly used), or an additive to the concrete.

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