In South Africa, the National Building Regulations (SANS 10400-XA: Energy Usage in Buildings) makes it compulsory for all new buildings to be insulated as of November 2011.
A traditional pitched roof allows for good water drainage. However, when it comes to flat roofing, water build-up on the roofing itself is a normal structural issue.
Waterproofing roofing in South Africa is extremely challenging.
Extremes in weather, high winds and extremes in temperature, non-standardised construction methods and materials, and sometimes poor workmanship combine to provide a waterproofing headache for the property owner.