SA Roofing March 2018 // Issue 98 | 页面 9

ASSOCIATIONS Five properties influence performance of an entire cladding system. sheets and ancillary items together with side and end laps determine the waterproofing capabilities. The type of fastener used to attach ancillary items to the profiled cladding has a major influence on both the waterproofing and structural performance of a system. Installation Is the cladding system going to be installed by an approved and competent installer whose workmen have been trained by the manufacturer? This is important as many installers use transient and / or sub- contracted labour. Failure to comply with this requirement can have a negative impact on warranties. Durability Durability is dependent on thickness and type of coating. Not all coatings perform equally in all environments. In our opinion it is bes t to insist on compliance, preferably with SANS standards, failing which other internationally recognised standards for both the manufacture and performance testing of the materials. It is of the utmost importance that the durability of the protective coatings on exposed fasteners is equal or better than that on the cladding. As almost all roofing fasteners are imported it is important to establish that the protective coatings comply with SANS 1273. Maintenance Maintenance requirements for a system can have a considerable influence on the life cycle costs of a cladding system and need to be considered. Insisting on compliance with SANS standards, which are written for local conditions, will greatly reduce the risks when assessing alternatives. Reg No: CoR18.3 2013/068719/07 VAT No: 4930188372 SPECIALLY FOR ANTI-CORROSION & 304 STAINLESS STEEL Manufactured in Taiwan DBN Branch: Contact: Summers | Tel/Fax: 031 - 765 1604 | Cell: 082 564 1463 | [email protected] JHB Branch: Contact: Vicky | Tel: 011 - 979 5026/7 | Cell: 082 782 6854 | P.O. Box 14353, Bredell, Kempton Park www.hengfuscrews.co.za