Your project is your most valuable asset. Choose Craft-lock® as your preferred concealed / side interlocking fixing system to withstand high wind loads.
When it comes to choosing a roofing & cladding system for your project it is important to keep in mind the structural performance of the roof covering system.
Roof covering systems are primarily designed to withstand high wind forces and all roof coverings need to be designed to resist these wind loads.
The resistance of the profiled roof sheeting, against uniformly distributed loads, depends on the strength-defining structural parameters.
From the above it is clear that both the sheeting profile and fastening system / mechanism play a crucial role in the overall wind load resistance of the roof system you choose.
Negative wind loads on roofs generally do not exceed 1.5 kN/m2. Analyses conducted by one of the leading Universities in South Africa show that the Craft-Lock® side interlocking fixing system can withstand wind loads in excess of 280 km/h, depending on purlin spacing and other design factors. Other concealed fixed roofing fixing systems generally fail at wind speeds of about 190 km/h.
Craft-Lock® is arguably the best performing roof sheet in the country when it comes to performance in high wind conditions and turbulent weather. This was the sheet used for the Mall of Africa – recipient of multiple awards in the industry. Well over 4 million square meters of Craft-Lock® now features in the South African and African roofing landscapes.
Our unique approach to fixing, improved purlin spacing, and other inherent product features make for a cost competitive concealed fix solution for your next project.