Location: Highveld Mall, Witbank (Emalahleni) Service: New concrete roof slab waterproofing — ArmTec HyperFlex (commercial) A new flat concrete roof slab over the service area of a commercial fast-food outlet at Highveld Mall in Witbank needed to be waterproofed from new, before the unit opened for trade. Waterproofing a fresh slab correctly is the cheapest