What Are Solar Optical Properties?
BWS Design • October 24, 2016

If you’ve been looking for some new window shades, you’ve probably run across the term solar optical properties. Although this term sounds complex, the basics of it are really simple and knowing them can help you learn what type of shades are ideal for your property.

What Are Solar Optical Properties?

A solar optical property is a characteristic of shades that has many determinants. These determinants reflect the total solar energy transmitted (Ts), the total solar energy reflected (Rs), the total solar energy absorbed (As), the visible light transmitted (Tv), the total ultraviolet factor (Tu), and the openness factor (Of). They combine to make up any given shade’s solar optical property. Here’s some more information about each of these determinants.

Ts

This stands for the total amount of solar energy that can pass through a fabric shade. High numbers of this value indicate higher amounts of total solar energy making its way indoors.

Rs

This stands for the total amount of solar energy that reflects off the shade and back outdoors. Lighter-colored shades usually have higher Rs values, meaning more solar energy reflects outside.

As

This is the amount of total solar energy absorbed in the shade’s fabric. Most of this energy stays out of the room, but a small amount gets re-radiated into the space.

Tv

This is the amount of visible light that passes through glass and into a building. It consists of all colors on the spectrum.

Tu

This factor indicates the amount of ultraviolet light that radiates through the shade’s fabric. It’s expressed as a percentage.

Of

Openness factor indicates the area of the openings in the shade’s fabric. High values of Of mean higher levels of light can pass through these openings.

Energy Efficiency

Property owners often think of energy efficiency in choosing window coverings because energy-efficient materials save on monthly bills. Many factors play into a window treatment’s energy efficiency, including the Shading Coefficient and Solar Heat Gain Coefficient.

Shading Coefficient

The Shading Coefficient consists of a number between 0 and 1 that expresses the amount of shade a window covering provides. Lower shading coefficients mean that more heat gets reflected back outside, while higher shading coefficients mean that more heat comes in the building.

Solar Heat Gain Coefficient

This coefficient expresses the amount of heat that makes its way inside taking into account the entire window system. This includes the fabric and the glass and frame assembly. Lower numbers of this coefficient mean higher amounts of heat that can’t enter the room.

Window Shades

Window shades vary in their shading coefficients. Cellular shades have the lowest shading coefficients and are therefore the most energy-efficient shades. Their coefficients range from 0.25 to 0.45. The shading coefficient for solar shades ranges between 0.3 and 0.6, and Roman shades have a shading coefficient of 0.3. Solar sheer shades usually have a shading coefficient of 0.35.

Wood Blinds

Unfortunately, wood blinds usually have low levels of energy efficiency properties. Motorized wood blinds can, however, open, close, and tilt automatically depending on the amount of sun hitting the window. This motorization increases energy efficiency by minimizing the amount of light coming into a room.

At Just Blinds, we offer shades featuring diverse solar optical properties. The products we sell come made from the highest-quality materials, and we have many designs and styles of shades available. We’ve been serving the Central Alabama area for more than 30 years, and we specialize in custom design and installation of blinds, shades, and shutters. To schedule a time for a free in-home consultation, please contact us.

Expert Advice by Just Blinds

Best Options for Sheer Privacy: Your Guide to Private Sunshine

By Autumn Hooper • January 10, 2025
Sunshine can fill any room with a warm glow. It provides natural light and can even lift your mood. But there may be some rooms where you want both privacy and sunshine at the same time. You shouldn't have to block out the light to enjoy private rooms in your home. For these moments, having the right blinds or drapes can make all the difference. The answer is in sheer privacy, sheer and semi-sheer materials that let in the light without allowing others to see through your windows. This is your guide to private sunshine: how to enjoy your privacy and warm natural light in any room. Why Sheer Privacy Matters There are many situations where sheer privacy is ideal. Bedrooms are warm and welcoming when filled with natural light, but privacy is paramount. Sheer window treatments can also bring sunshine into your living room without broadcasting family activities to the neighborhood. And if natural light helps you stay focused in your office, you can maintain professional security without worries by hanging sheer blinds and drapes so your computer screen is never visible through the window. How can you achieve this perfect balance of sunshine and privacy? There are several types of blinds and drapes that can meet your needs. Woven and Fabric Blinds The right fabric or woven blinds can provide the perfect balance between light and privacy. Woven and fabric blinds are rarely completely opaque. Depending on your choice of material and weave, you can determine both how much light shines through and the level of visibility in your sheer material. Fabric blinds use woven fabric to block visual access through your window while also acting as a diffuser for the sunlight. Woven blinds are made of grass or reeds and provide a similar effect. This can be used to cast gentle glowing light into your room at slightly dimmer-than-normal levels while showing silhouettes or less. Slatted Blinds and Plantation Shutters The most traditional answer is slatted blinds and plantation shutters. These methods use opaque angled slats that open to allow in some light without creating an easy line-of-sight from anywhere that a person outside might reasonably be standing. Slats pointed up or down welcome sunshine from various angles during the day but cannot be seen through until the slats are nearly horizontal. Slatted blinds hang from the top, and the angle of the slats is controlled with a cord system. Today, pull cords and hanging loops are no longer used. Instead, a control wand or motorization is used to enhance home safety and convenience. Plantation shutters are wood structures that are permanently installed or fold out over your windows. The slats are structured and controlled by pushing a ridge bar on the back of the shutter slats themselves. Honeycomb Blinds Honeycomb blinds are a type of fabric blinds that use honeycomb cells to provide greater insulation. Honeycomb blinds are not just energy-efficient, they also provide greater privacy by implementing layered fabric to create the honeycomb air pockets. At the same time, the fabric used can bring in sunshine and act as a diffuser to spread gentle sunshine through your room. The honeycombs themselves also diffuse any silhouettes or shadows that might be seen through the fabric of the blind for greater privacy inside your rooms. Semi-Sheer Drapery If you prefer drapes, you can also select a sheer fabric as the innermost layer for your draperies. The fabric and the folds of the drapes combine to provide both a diffuser for sunshine and privacy. Drapery is the most likely to reveal shadows and silhouettes, but a style with more folds when the sheer layer is closed can obscure shapes and activities within to provide the privacy you need. Private Sundrenched Rooms with Just Blinds If you are looking to enjoy diffused sunshine and keep your rooms private at the same time, Just Blinds can help. Contact us today to explore your options for sheer privacy design with custom window treatments.

2025 Colors of the Year: How to Use Them in Your Home Design

By Autumn Hooper • December 10, 2024
Every year, the leading paint and decorator brands release their Color of the Year. Each organization theorizes which colors will be at the peak of interior design trends for the next 12 months, and the 2025 Colors of the Year have been released. If you want your interior decor to match the mood of the year with the latest magazine-spread designs and eye-catching arrangements, now is your chance. 2025: A Year of Bold and Somber Tones 2025 rings in a year of regally subdued tones. They are at once both bold and somber, creating relaxed yet elevated living spaces through strong colors and muted hues. This is a marked contrast from the light and airy palette created by the colors of the year from 2024 featuring soft pinks, warm honeys, and renewing blues. This year, the leading tones are dark red, deep purple, and dusty neutrals that make a space feel at once both cozy and formal. Stately Reds If you love dark reds from brick to mohogany, then this is your year. Both Behr and C2 have named dark yet natural-tone reds as their colors of the year. They are perfect to make a room feel luxe and stately without the overwhelming quality, making these reds the perfect base color for walls and a great accent in an elegant room. Rumors by Behr - A dusty red that is both light and dark at the same time. This muted town is a smooth, creamy rendition of faded brick that looks perfect with warm colors and red-hued wood furniture. Raku by C2 - A bold, dark mahogany red that looks great for interiors and exteriors inspired by the ancient Japanese tea ceremony. Regal Purples Purple is back in bold refrain for 2025 interior design. Between Violet by Minwax and Purple Basil by Glidden, you have an incredible palette to create the most regal of interiors, from primary colors to accents that pop. We love these rich tones that make any room stand out from the typical warm tones and neutrals that have ruled the roost for a decade. Violet by Minwax - Violet by Minwax is not your typical violet. It is a deep, rich aubergine, the color of royal robes and the most luxurious paint. This majestic color will stand out no matter how you use it. Purple Basil by Glidden - Purple Basil is a dusty reddish lavender that shares tones with charcoal and plum. It is somehow both somber and cheerful, warm yet subdued. Purple basil is a wonderful color for both primary walls and bold trim without overwhelming the space. Relaxed Blues Last year, blues were bright and full of energy with an aqua-green undercurrent. This year's blues are more relaxed, blending well with neutrals whether you're looking for a chill space or a summer tone. Quietude by HGTV / Sherwin Williams - Quietude is the eggshell of blues. It is soft and faintly blue in hue while still giving the light neutral feel of a nearly-white painted room. It has the faint hues of a lightly cloudy sky. Encore 8002 by Valspar - Encore 8002 is a bold, rich blue on the cheerful side of royal blue. It's deep but not dark, embracing what makes blue such a great color for decor. Mapped Blue by Dutch Paint Boys - Mapped Blue reflects green-blue theme of last year but with this year's dusty trend. It's soft and comforting but with a touch of surprise that's not your everyday medium blue. Subdued Neutrals While red, purple, and blue may be our boldest tones, it's neutrals that rule the 2025 Color of the Year list. From deep yet soft Truffle to warm almost-pink cinnamon, you will find a surprisingly gorgeous palette of neutrals to work with as primary, accent, and rich detail tones in any room design. These colors can fall into the background or make your room pop. Truffle by Stainmaster - Truffle is the darkest of the 2025 neutrals, blending honey with charcoal for a warm bold tone that looks amazing in boho or minimalist styles. Mochi by Little Greene - Mochi is a warm medium neutral that naturally supports wooden furniture of all hues. It has undertones of milkey coffee but reflects light in a way that still brightens a room. Caramelized by Dunn-Edwards - Caramelized is a tone that approaches boldly from the cheerful side, reminding us of dessert landscapes and faintly orange sunset skies. Cinnamon Slate by Benjamin - Cinnamon Slate is a soft neutral that is just this side of dusty pink. It's described as a dreamy, velvety purple and brown that can add subtle richness to any space. Mocha Mousse by Pantone - Mocha Mousee is a sophisticated neutral that reminds us of soft earth and smooth wood. Using the Colors of the Year to Inspire Your 2025 Interior Design These colors aren't just for paint, they can be used to enhance every element of your space. One of the best ways to introduce diversity and annual color trends into your home is through blinds and drapes. Choosing the perfect blinds can update your style to magazine-worthy arrangements for every year and season. Find the latest colors and styles at Just Blinds today.
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