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Roller shades are a very common type of shades, based on a pull-down rolling type system. There are wooden roller shades, but most are fabric shades, with rugged steel rollers, allowing an easy installation and several custom options.
Blackout and transparent roller exterior shades are between the
best in terms of energy efficiency. Slats of natural materials can be woven together with string or other decorative materials to make wood and bamboo shades. The energy efficiency of bamboo and other wood shades is moderate, but they allow good light control and are a good economical alternative to shutters. Pleated or cellular shades Pleated or cellular shades are made from two or three cell pleated shades, containing dead air spaces. Their insulating value is reasonable (or even very good comparatively to other shades), but their effectiveness to control temperatures is moderate.
For greater insulation, cellular shades may involve double and
triple cell styles (the more cells, the higher the energy
efficiency). Roman window shades are a very popular type of interior shades, mainly due to aesthetics, and because they are easy to operate. They are usually made of soft drapery fabric and in some cases of woven wood. Roman shades are usually raised or lowered like a blind, and are excellent to create privacy and to control light from the outside. They involve several options to choose: top-down/bottom up, continuous cord loop... and offer moderate energy efficiency in terms of cooling or insulating goals.
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