Need better Window Thermal Insulation?

Need better Window Thermal Insulation?

Need better Window Thermal Insulation?

Cellular shades are the answer!

Cellular shades are great if you need better Window Thermal Insulation window covering used to block or filter light and insulate windows to save energy. Cell size can vary. Cell shapes hold trapped air and create a barrier between the window surface and the room.

Windows and doors make up for approximately one-third of a home’s total thermal loss in winter as well as entry of undesired heat in summer. When the air inside the room comes in contact with windows, it is cooled or warmed. By convection, this air then circulates around the room. Cell shapes in the blinds hold trapped air and create a barrier between the window surface and the room, thus lessening the transfer of heat. Shades, however, provide only slight control of air infiltration.

Installed cellular blind image
Cellular Blinds can be opened from either the top or bottom.


Cellular shades can be constructed as a single cell, double cell, or triple cell shades. The single-cell fabric has an R-Value between 0.28 and 0.44 (1.6 and 2.5 imperial), and double cell fabric has a metric R-value between 0.49 and 0.70 (2.8 and 4.0 imperial). A 6 mm (¼”) thick single-pane window has a metric R-value of 0.16 (0.91 imperial) helping to have better window heat reduction.

Unlike window blinds, which are made of hard materials, cellular shades are made of a soft paper- or cloth-like material. Typically, spun lace and bonded polyester are used, but other fabrics can be used during the manufacturing process.

In common with all blinds, cellular shades can reduce solar gain in summer and provide blackout for sleeping. Also, as with other window treatments, they are raised and lowered horizontally with a string. Cordless cellular shades are available to reduce the risk of strangulation for small children.

Here is an article with relevant information concerning safety with blinds.

Are your Blind Cords a Potential Killer?

Insulated Cellular Shades for better Window heat reduction

These insulated cellular shades are made of pleated materials that are designed to fold up, accordion-like, usually at the top of the window, but sometimes at either the top or the bottom. These types of shades contain one or more air layers in a honeycomb cross-section. Some can be adjusted from the top or the bottom.

Insulated cellular shades are typically considered to have the highest R-values of all window coverings. The air pockets in the honeycomb cross-sections act as insulators, increasing the R-value and reducing the conduction of heat through the window.

Insulated cellular shades are an excellent choice if you are looking for significant energy savings from their window coverings, as well as comfort, privacy, and increased home resale value.

In heating seasons, tightly installed cellular shades can reduce heat loss through windows by 40% or more, which equates to about 20% heating energy savings. 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.

Aqua blue cellular blind
Aqua blue cellular blind


Cellular shades that operate on sidetracks are most effective at increasing the R-value of windows, and those that open from both the top and bottom allow users to most effectively control daylight entering the home.

Some cellular shades include the option of automation, allowing the blinds to open and close on a set schedule. The schedule can be seasonally optimized to reduce heating and cooling loads while maximizing natural light and home comfort.

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Al’s Blinds is continuing to service our clients while following the required guidelines.