For heat control, it is always better to shade externally. By preventing the heat entering the building in the first place, temperature control is much easier. Once your room is too hot it takes time to equalise to the outside temperature. Air conditioning can be used, but we do not encourage this as it is a huge contributor to climate change.

The suitability of your roof depends on the roof structure. They are designed for the arms to run along roof beams of lean-to verandas and conservatories. They may also be used over rectangular roof lanterns, but this often requires bespoke steel structures and fixing onto the building.

Remember, these roof awnings are to control light and heat gain. They should be open when raining or in high winds – so are not suitable to reduce noise of water hitting on glass.