Construction World April 2016

NMC Construction Namibia was awarded the contract to apply SikaWater-

bars, SikaSwell S-2, SikaPrimer-3N and Sikasil-Pool. The waterproofing

process commenced with the application of SikaSwell S-2 to the 60 m

of construction joints on the floor of the pool. Highly economical and easy to

apply, SikaSwell S-2 is a one-part polyurethane waterstop that swells in contact

with water. It provides permanent water resistance and its optimised expansion

rate prevents damage to fresh concrete during curing.

Sika Waterbar Type O-20 was used as a centrally placed waterbar in all the

expansion joints. Manufactured from virgin thermoplastic PVC for easy, on-site

welding, internationally tested Sika-Waterbars are used to seal construction and

expansion joints in all water retaining structures. They are designed to withstand

high water pressure and are supplied in rolls of various widths and types.

Sika Waterbar Type DR-20 was placed in the external wall joints of the pool

while the 135 m pool perimeter, between the wall and floor, was sealed with

SikaSwell S-2. All expansion joints were subsequently primed with SikaPrimer-3N, a

one component, epoxy-polyurethane solvent-based primer for porous substrates.

Suitable for use on matt-moist substrates, it is easy to apply and provides good

wetting out properties.

To complete the waterproofing process, Sikasil-Pool, a one-part, neutral curing

silicone sealant especially designed for swimming pools and any permanently

wet areas, was applied to the joints. Sikasil-Pool is highly resistant to chlorine and

fungal attack; it also provides excellent weathering and UV resistance. Its elasticity

and flexibility provide high tear resistance.

To complement the many luxurious finishes at Marula Game Ranch, including

Oggie oak flooring and suede paint on the walls, the swimming pool was

completed with a layer of granite tiling. With more than 7000 species of wildlife

roaming its vast lands, Marula Game Ranch is destined to become a top tourist

attraction in Namibia and Sika is proud to have been part of its construction.

NAMIBIAN WATERPROOFING

When a Russian billionaire with a passion for nature

and wildlife recently purchased almost 30 000 ha of

land in Namibia, it resulted in the construction of

the luxury Marula Game Ranch. It was here, 80 km

southeast of Windhoek in the Khomas region, that RBL

Architects specified several of Sika’s high performance

waterproofing products for the lodge’s one million-litre

swimming pool.