Mapei South Africa has well-proven solutions for all waterproofing challenges with its comprehensive range of Mapei waterproofing products. 

For the past five years, the company’s technical service team has been introducing the local construction industry and Do-it-Yourself (DIY) homeowner to the benefits of the advanced building technology additives, sealants, adhesives and concrete performance chemicals that are available from the international Mapei Group.

Offering market-leading performance and handling advantages, Mapei’s 1 400 products are recognised throughout Europe, America and the Far East.

South Africa, with its high prevalence of ultraviolet sunlight, has proved challenging when it comes to waterproofing flat-roofed structures, balconies or terraces, curved roofs or even guttering and downpipes.

For these applications Mapei suggests that its Aquaflex Roof material should be used. It is a ready-to-use flexible liquid membrane, containing fibres, that allows for continuous waterproofing layers on exposed external surfaces.

It can be applied to concrete, ceramic and stone coatings, cementitious screeds, asbestos cement, bitumen sheaths, wood, and even galvanised sheet, copper, aluminium and iron. However, Mapei’s Eco Prim T primer should be used before applying the liquid membrane.

Once dry, Aquaflex Roof is tough enough to withstand occasional light foot traffic, and is flexible enough to cope with normal temperature variations that create expansion and contraction stresses while ensuring long-lasting protection of the substrate.

Where there is a focus on the sustainable thermal efficiency, Mapei says its Aquaflex Roof HR product should be used. This product is also a ready-to-use, fibre-filled liquid membrane but has a high solar reflectance index of 105.

Mapei says the white-coloured product lowers the surface temperature of the roof by more than 50% when compared with a dark-coloured covering. This contributes to reducing the heat island effect of a roof, making the space beneath it more comfortable.

Mapei points out that with any successful waterproofing job, 90% of the attention needs to be paid to about 10% of the area, namely the corners, joints, cracks and the fillets between the horizontal and vertical planes.

Mapei’s research and development into elastic waterproofing systems have produced Mapeband SA, a long-lasting solution comprising a self-adhesive butyl rubber tape with alkali-resistant non-woven fabric, bonded on the outer surface to give it excellent adhesion.

The waterproofing membrane is then applied over it and because of the excellent adhesion properties of Mapeband SA, it can be used with any type of absorbent or non-absorbent substrate to provide protection against heavy rain or water ingress.

Typical applications include:
• Waterproofing corners and fillets between walls and floors on terraces, balconies and in bathrooms and showers.
• Sealing the joints between different types of material such as bitumen membranes, metal, ceramic and cementitious screeds.
• Sealing hard-to-reach fillets between windows and door fittings, ledges and substrates.

Mapei says its Mapeband TPE is an ideal solution for flexibly sealing and waterproofing expansion joints and any cracks that are subject to movement.

“Mapei’s unrivalled research and development produce user- and eco-friendly products ideally suited to South Africa climatic conditions so that customers get a world-class solution to any waterproofing problem,” says Paul Nieuwoudt, Mapei South Africa’s product manager for building systems.

“We can provide an optimum solution for a wide range of structural and environmental conditions and ensure a long service life too,” he adds.

Mapei South Africa
Tel: (011) 522 8476