Which of the following is not a type of window treatment for energy conservation?a) Insulated shuttersb) Double glazingc) Magnetic storm windowsd) Green roofs

To determine which option is not a type of window treatment for energy conservation, let's analyze each choice:

1. Insulated shutters: These are installed over windows to reduce heat loss in winter and heat gain in summer. They effectively conserve energy.

2. Double glazing: This involves two panes of glass separated by a space that reduces heat flow through windows. It is widely recognized for its energy-saving properties.

3. Magnetic storm windows: These are a type of window treatment that can be applied over existing windows to create an insulating barrier, thereby improving energy conservation.

4. Green roofs: While beneficial for thermal insulation of a building and overall energy efficiency, they are not a window treatment. Instead, they refer to the practice of growing vegetation on building rooftops.

Final Answer

The option that is not a type of window treatment for energy conservation is d) Green roofs.