between 0.28 and 0.44 Click to see full answer. In this regard, do cellular shades really insulate?Insulated cellular shades are typically considered to have the highest R-values of all window coverings. In cooling seasons, cellular shades can reduce unwanted solar heat through windows by up to 80%, reducing the total solar gain to 15% or less when installed with a tight fit.Secondly, are double cell shades worth it? Because of their two layers, double cell shades give you better insulation from loud noise. They also insulate you and increase your energy efficiency a little better than single-cell shades do. The narrower fabric cells fit much better with shallower window openings. Similarly, you may ask, are cellular shades worth it? Cellular shades are workhorses, and they offer great insulation, light control and privacy. However, they are often not the most fashionable of window treatments. However, they can still be a great way to control the sun even on large, specialty windows.What are the best cellular shades? The 5 Top-Rated Cellular Shades for 2020 Editor’s Picks Brand Rating Best Overall Achim Home Furnishings Honeycomb Cellular Shade 4.5 Runner Up CHICOLOGY Cordless Cellular Shades Blackout Window Blind 4.5 Best Budget Buy Bali Blinds Cordless Light Filtering Cellular Shade 4.2