One hybrid system of movable insulation uses beaded insulation material which is blown into the cavity of the space between double glazing and removed to a storage area when not required. Movable insulation surfaces can be operated manually or automatically integrated into the design to act as reflective surfaces for use in daylighting and as summer shading devices. R-value is the resistance of a material to the flow of heat through it. R-values can be added up. Even an air film on the surface has insulation value.
All materials have the same R-value.
Insulation can be moved from one place to another. Enclosed dead air space between materials has insulation value. Reflective materials can work like insulation by reflecting heat away. Movable insulation works best covering glass. Movable insulation is always electrically operated.