How to Block Light from the Sides of Blinds
BWS Marketing • July 5, 2021

When you pull down the shades, you want to really darken the room. Whether you want darkness for sleeping, watching movies, or telling scary stories before the sun goes down; no-one likes that halo of light around the blinds that shines despite your best shading efforts. Those light edges are not only a little bit blinding, they also disrupt the look of a room with the curtains drawn. It keeps you from fully darkening a space and in the wrong circumstances, that light around the side of your blinds can really wreck the quality of your sleep or your home theater experience.

So how the heck do you block light from the sides of blinds when your blinds are otherwise perfect? Fortunately, there are more than a few clever answers to suit your needs, depending on your style and the way you want to subtly solve this leaking light problem.

 

Blinds that Fit Perfectly Into the Window Frame

One option is to order custom blinds and a mount that allows your blinds to perfectly fit into the space of your window frame. This means that the edges of your stiff blind fabric or light wood slats perfectly fill the space, the edges of each side lightly brushing the inner edge of your window frame. You may still see a sliver of light, but gone are those big gaps of light singing all the way around your window. Pulled down to the sill, your perfectly fitted custom blinds can block almost all light coming through your window.

 

Blinds Mounted Over the Window Frame Edge

Another option is to buy blinds that are an inch or three wider than your window frame and mount them ‘flush’ on the outside of the window frame instead. For this method, Mount your blinds roller just above the top beam of your window frame. Pull down your blinds so that they layer over the left and right vertical beams of the window frame. With a flush frame, the lower end should lapse just below the lower frame beam. With an extended window sill, bring your shade down to rest on the sill itself.

This overlap method will allow your blinds to sit against the window frame, blocking most of the light that might seep through. Again, you may find a minuscule sliver of light around the sides, but far less than the traditional glowing gap around the blinds.

 

Side Channels and Light Blockers

The most effective approach involves a very small additional installation in your window: Side channels and light-blocker strips. A light-blocker is an l-shaped piece of plastic (or metal, or wood) that mounts just inside your window frame. It can then sit just behind or just in front of the edge of your blinds, providing a small panel that blocks only that tiny space between the blinds and the window frame itself.

Side channels are an even more subtle approach. These u-shaped strips also mount inside the window frame, but they are designed to elegantly blend with the frame and ‘capture’ the side edges of the blinds as channels. The blinds will not only block more light due to having the sides blocked, they will also swing less and can look more elegant with the installation of tasteful side channels.

 

Layered Window Treatments

If you’re looking for a more fabric-focused solution, try layered curtains and window treatments in addition to your blinds. Hanging curtains on either side of the window, for example, are excellent at blocking the light that comes from the sides of each window. This is because the folds of curtain fall against the window frame and nearby wall as they fold back and forth. Combined with blinds, layered curtains are a great window treatment solution for a truly darkened room.

 

Tired of light seeping in around your blinds? Contact us today for the perfect custom solution to perfectly darken each of your windows when closed while enhancing your interior design vision.

 

Expert Advice by Just Blinds

5 Ways to Beat the Summer Heat With Eye-Catching Window Treatments

June 18, 2025
When the mercury soars, never underestimate the power of blinds, shades, and other window treatments to keep your living space cool. With the techniques that follow, you can limit demand on your air conditioner, lower your energy bill, and maintain stunning aesthetics both inside and out. 1. Go For the Layered Look If you don't want blackout blinds that completely block out light and heat, consider layering your window treatments for the summer months. This is a great way to add depth and texture to your rooms while still maintaining a tight home envelope and limiting solar heat gains. Use wood or faux wood blinds to create a solid base layer. Then, add sheers and custom curtains to finish the look. Layering creates levels of flexibility and adaptability that single window treatments cannot match. You can close all three layers for maximum heat blocking, slant your blinds and close your sheers to let limited sunlight in, or open your drapes and your blinds and use your sheers for light filtering. 2. Beat the Heat With Outdoor Window Treatments Some of the best window treatments for blocking heat and light during the summer months belong on the outside of your home. If you haven't done so already, consider investing in shutters. Shutters can vastly improve the efficiency of your home while providing excellent UV ray protection. This will keep your flooring and furnishings from fading while offering a fair amount of skin protection. In addition to tightening home envelopes, shutters provide excellent noise reduction and offer added protection against the natural elements. With your shutters standing guard as your home's first defense, you'll still have one or more window treatments at the interior of the building during the next big heat wave. Outdoor Shades Work, Too If shutters aren't the right look for you, opt for lightweight, retractable shades. Installing outdoor shades gives you yet another way to safeguard your home from solar heat gains whenever temperatures spike. You can use outdoor shades with layered indoor window treatments to create an airtight space and reduce stress on your AC during the hottest portion of the day. Once the sun sets, you can easily draw them open. 3. Optimize Airflow According to the United States Environmental Protection Agency (EPA), indoor air can be up to five time more contaminated than outdoor air. Even though air conditioners and heat pumps filter the indoor air during operation, they don't extract volatile organic compounds (VOCs) or other gaseous chemical contaminants. When the sun's out and you're running your air conditioner non-stop, all the contaminants introduced into your home by off-gassing building materials, cooking, room freshening sprays, and chemical-laden self-care products and cleaners remain trapped indoors. Blinds are great for optimizing airflow. When the sun sets, the mercury dives, and a cool breeze rolls in, you can turn your blind slats upwards to reflect light from the setting sun and slightly crack your windows. This technique works well for giving ACs an early evening break. It's also an excellent strategy for improving indoor air quality (IAQ). As natural light decreases, you can open your blind slats wider and let more fresh, outdoor air flow in. This easy air exchange will get your home and your IAQ ready for the challenges of the next sweltering day. 4. Keep Indoor Moisture in Check With Shades With a high-functioning air conditioner or heat pump, you'll get reliable humidity regulation whenever your cooling system is on. The right shades can support this by keeping outdoor moisture outside and preventing the buildup of condensation on your windows. Cellular shades are made for high-moisture areas, and they're the perfect addition to any other southern home. You can get similar benefits from faux wood blinds, vinyl blinds, and aluminum blinds. Moisture-resistant blinds or shades are an essential upgrade if you currently have heavy fabric drapes or multiple layers of sheers. Some materials capture and retain moisture. They're also prone to problems like mold and mildew and can lower IAQ as a result. 5. Go Motorized Don't worry about dragging your ladder out to draw your outdoor shades or running through your home to manually adjust your blinds. Shop for motorized window treatments that you can open, close, and adjust with just the touch of a button. This way, as lighting and temperatures change, you can quickly adapt your window treatments to reflect your most current needs. At Just Blinds, we're all about comfort. We want your window treatments to look amazing, but believe that you should feel amazing too. We offer a fantastic selection of blinds, shutters, shades, and custom draperies to help our clients beat the heat in the summer months . Let us help you stay cool in style. To speak with our design consultants, contact Just Blinds today!

How to Use Windows to Make Your Home Cozier

May 29, 2025
Windows give a home warmth, light, and a view of the outside world. But with the right treatments, you can also use your windows to make your home feel cozy. Coziness is a semse of comfort and familiarity. It defines a charm that feels like home, whether it's the coziness of a warm room in winter, your movie den in the summer. When we think of coziness, we often think of couches, candles, and throw blankets. But your windows play an equally important part. After all, it's your window treatments that frame the light, add softness to your walls, and set the mood for every room. The right window decorations can make your home feel warm and inviting. Using Windows, Drapes, and Shades to Create Coziness  Window treatements create a vibe for your entire room. Drapes, shades, and shutters can be used to create a backdrop of texture, color, and style. They also allow you to control the light levels in your home and even the color of the light. This means that your windows are the best place to start when making a room feel cozy. Layering soft drapes in rich colors is a great way to add that sense of comfort and warmth to a room, while cheerful blinds in soft neutrals can help a room to feel relaxed and welcoming. You can also use drapes or blinds to add a splash of color as a bold accent in any room. These touches combined with glowing sunshine during the day create a cozy and comfortable space. Plants as Cozy Window Decor You can use other types of decor to evoke a sense of coziness, too. We particularly love plants. Leafy green plants love the sunshine as much as you do and thrive when placed in a sunny window. Place an elegant snake plant in the windowsill or hang creeping ivy from a hook near the top of a window frame to make your room feel cheerful and alive with green energy. Plants make a home feel natural and vibrantly lived-in which is perfect for your cozy vibe. For a cozy kitchen, you can even grow fresh herbs in a box on the windowsill that add a delicious aroma and tasty fresh seasoning along with their natural visual appeal. Enhance Your Space with Aromatherapy Speaking of aromatics, you might be surprised how much your windows can take part in cozy aromatherapy. Window treatments like drapes and blinds are fabric that can help purfumes and essential oils linger in the room for days. Cozy scents are often warm aromas like cinnamon, vanilla, lavender, almonds, and coffee. But fresh fruit or floral scents that smell like "home" to you can also add a sense of coziness to each room. Simply spritz your curtains with your favorite scents and each room will subtly carry that comforting smell of home that makes you want to snuggle into the couch and relax at the end of each day. Moody Shade and Maximizing Light When we visualize coziness, light levels often play a role. Your minds eye may see a sun-drenched cottage or a gently lit library as your mental idea of a room that is perfectly cozy. Window treatments allow you to set the mood by reducing or maximizing light to the perfect levels. Well-designed shades and drapes can pull back attractively to maximize light, bathing your room in the warm welcoming glow of sunshine. Or if you prefer a more relaxed coziness, you can use translucent drapes or cellular shades to filter the light exactly the right amount. Diffuse and reduced light filtered through fabric of a warm color can make you feel safe and at peace. Increase Your Happiness with Window Design Your home should feel welcoming, relaxing, and cozy. The right window treatments can help set the stage for a delightful welcome home each night, rejuvinating weekends, and an overall feeling of at-home coziness when you are relaxing in your favorite place. To achieve this goal, you can experiment with home decor changes, including your windows, to achieve your ideal at-home bliss. Contact us today for custom drapes and blinds to complete your cozy room design.