Glass canopies for patios are usually made from existing timber roof structures with a perspex roof. Generally, the customer wants to change the roof to glass. The amount of work that needs to be done depends entirely on the existing structure.
Another common way that a glass canopy can be installed over a patio is to install an aluminium extrusion, as shown in the image below, to support the glass canopy.
Canopies can be complex structures and are not covered directly under the glazing code. It’s important to ensure in the planning stages that everything is done according to the rules and regulations. A consultation with an engineer to determine the number and size of brackets, fixing methods, and glass types is necessary.
Remember the following during the planning stages and discuss them with your engineer. This way, you can get the kinks out before your glass canopy project gets going too far and a change or fix would be costly.