Effective protection of building structures against water ingress

The effective protection of building structures against water ingress or to prevent water loss to save water is a major challenge. Waterproofing Junction offers waterproofing solutions for domestic and industrial structures. From the foundations to the roof, under chemical attack or in areas where potable water and foodstuffs are in contact with the waterproofing membrane. Waterproofing Junction  have proven their reliability in countless projects in the Western Cape.

A Leaking Roof

A leaking roof is one of the most detrimental failures that can happen in manufacturing. Water ingress is likely to damage the structure of the building. Water leaks may also cause the loss of raw materials or products. Malfunctioning of machinery and the destruction of technical equipment may extend the serious problems a leaking roof can cause.The long-term performance of a properly protected roof improves the durability of the building. At the same time, it secures the investment made into materials and assets. Often, industrial roofs are very detailed with build-ups for air-conditioning, ventilation, windows and architectural shapes. Reliable waterproofing is only possible with liquid membranes because the liquid ensures full surface contact even in tiny corners.



Polyurethane membranes, specially formulated polyurethane and hybrid systems are used to create impervious, fully bonded, highly elastic and seamless membranes; effective protection of building structures against water ingress. These are typically used on exposed roofs, inverted roofs, etc. Waterproofing Junction offers hand-applied primers suitable for application on a wide range of substrates.


An expansion joint is an assembly designed to safely absorb the heat-induced expansion and contraction of various construction materials. They are commonly found between sections of slabs, bridges, and other structures. The “assembly” can be as simple as a caulked separation between two sections of the same materials. More recently, expansion joints have been included in the design of, or added to existing, brick exterior walls for similar purposes. In concrete and concrete block construction, the term applied is “control joint,” but serves similar purposes. Throughout the year, building faces and concrete slabs will expand and contract due to the warming and cooling of our planet through the seasons. The structures would crack under the stress of thermal expansion and contraction if expansion joint gaps were not built into the structures. Even today the expansion joint gaps are often neglected during the design process, and simple caulking is used to fill these gaps to complete a project.

This simple caulking will not result into effective protection of building structures against water ingress or handle the thermal expansion due to the changing seasons, ultimately leaving a leak point in the structure. This expansion joint becomes the main source of leakages in the structure which can ruin the interiors of the building if not sealed or treated confidently. Waterproofing these joints often an overlooked aspect of waterproofing design and detailing.