Sika solutions were top of mind when software provider Softline decided to relocate its Western Cape regional operations to Cape Town’s Century City. The contract for this new custom built, high quality, A-grade office block was awarded to well-established property developers Gorrie & Findlay, who also owned the vacant plot on the border of Century City and sold it to Softline.
Theproject commenced in March 2010, with a number of Sika’s top quality products being specified for the three-storey building. One of the products specified was the Sikadur-Combiflex System (28m and 30 litres) for the building’s main expansion joints. This high performance joint sealing system consists of a FPO (Flexible Polyoelifin) bandage and Sikadur-31 CF Normal, a two-part, thixotropic epoxy adhesive. When applied to a joint, Sikadur-Combiflex System allows for irregular and high movement, in more than one direction, whilst still maintaining a high quality seal.
For filling gaps between the brickwork and concrete, Sikadur AP (35 litres) was the product of choice. This all-purpose, two-component, epoxy paste adhesive is easy to mix and apply and provides excellent adhesion to a wide variety of surfaces including damp surfaces. It is ideal for vertical and overhead applications, provides high abrasion resistance and can be smoothed off with water.
Sikaflex-11 FC+ (1500 x 600ml sausages), a one-part, moisture-curing, elastic joint sealant and multipurpose adhesive was used on the project for bonding Aluminium Angle to concrete surfaces and for sealing vertical and horizontal joints. Based on Polyurethane, this ready-to-use, flexible product is suitable for indoor and outdoor use and, as a sealant, offers bubble-free curing, excellent adhesion and good mechanical resistance. As an adhesive, Sikaflex-11 FC+ is non-corrosive, impact- and vibration-absorbing, and grouting the bonded parts is not necessary.
Grouting however was necessary for fixing a rail onto concrete for the main sliding gate. SikaGrout-212 (15 bags), a cement-based, fluid grout was used, given its adjustable consistency, very good flow characteristics, rapid strength development and high final strengths. It is shrinkage-compensated, non-corrosive and expands by gas generation whilst still in the plastic state of curing.
Two of Sika’s ready-to-use mortars were used for corking underneath the Aluminium runners of the various sliding doors in the building: Sika MonoTop-615 HB (25 bags), a one-component, high build, polymer-modified repair and reprofiling mortar containing silica fume, and Sika Rep LW (15 bags), a non-sag, cement-based, multipurpose patching and repair mortar.
Since the waterproofing detail for the project, was a new type of specification, waterproofing consultant, GP Koning, asked Sika for advice on which products to use: Sika Cemflex was recommended for waterproofing the Aluminium Angle onto concrete, and SikaLatex was recommended for waterproofing the plaster. Sika Cemflex (20 litres, plus membrane) is an acrylic based emulsion which, when mixed with Portland cement and water, forms a waterproofing slurry that is used in conjunction with the Cemflex Fabric. SikaLatex (5 x 20 litres) is a high quality, synthetic polymer emulsion for adding to cement mortars where good adhesion and excellent water resistance are required. Both products are non-toxic.
This 3,500m2, multi-million Rand project was completed on time in April 2011, bringing Softline’s Western Cape Regional Head Office inline with the modern, professional working environments enjoyed by its Gauteng and KwaZulu Natal employees. With Sika’s state-of-the-art products having played such a significant role in its construction, Softline can rest assured that its new asset at Century City will stand the test of time.
For more information on Sika products and systems, visit www.sika.co.za