Understanding Marquee Roof Angles and Their Impact on Durability
Most large commercial marquees are designed with a 20-degree roof pitch. This design ensures that a 6m wide marquee has a 1m rise, resulting in a 3m apex height with 2m legs, or a 3.3m apex height with 2.3m legs. For 9m wide structures, the rise is 1.5m, leading to a 3.8m apex height with 2.3m legs.
Why Choose a 20-Degree Roof Angle?
Although a 20-degree roof pitch is slightly more expensive to manufacture compared to a 30-degree pitch, it offers superior wind resistance. As the roof angle increases, so does the height of the ridge. This results in a larger roof surface area and exponentially greater forces that the roof must endure. Specifically, if the roof height doubles, the forces it must withstand increase fourfold.
Benefits of a Lower Apex Height
A lower apex height improves wind resistance. Given the UK’s frequent rain and wind, the 20-degree pitch has been proven over years of experience to be the most durable and effective in handling these weather conditions.
For Smaller Structures
Smaller marquees, such as those 3m or 4m wide, can manage a 30-degree roof angle more effectively, especially when additional roof braces are incorporated to enhance structural strength.
For tailored advice on your event, please contact us with details including the type of event, available space, number of guests, and any diagrams or photos of the site. We’re here to help you select the best solution.
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