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

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.
April 23, 2025
Your selection of window treatment products and services is not merely about getting a job done. Rather, if you look hard enough, you can find direct correlations between the type of person that you are and the window treatment that you select. We have created this personality-based guide to help you best discover what kind of window treatment truly matches your spirit. The Dependable Type: Wooden Blinds You are the person that all of your friends can count on. You are the type of person who truly sticks to your plans when you make them, and you are the type of person who will choose wooden blinds for your home. Privacy is important to you when selecting your blinds, and that is why you find yourself pulled into the idea of putting up wooden blinds. Besides that, they happen to be highly functional, and that's not something that you are willing to pass up either. The Planner: Blackout Curtains Those who value truly getting the most value out of their blinds or anything else that they install in their homes will think very carefully about their options. For those people, going with blackout curtains makes a lot of sense. They want to gain as much value as possible out of their options, and they know that they can significantly improve their quality of sleep and so much more when they opt for blackout curtains. These also happen to be a great option for those who work night shifts or other odd hours and yet still want to enjoy their sleep. They need blackout curtains to help increase the quality of that sleep and allow themselves to get their day started right. The Tech Enthusiast: Smart Shades They roam among us: The type of people who are quick to adopt any new technology and get to work figuring out how it can improve their lives. These people are great because they are not afraid to take a risk and because they help to move our society forward. They simply want to get more out of each day, and they often do so by adopting and using the latest technologies. These individuals will gravitate towards smart shades for the following attributes: Innovation - Who wants to stick with the boring old ways of shading one's house? Smarter options are now available, and you better believe that the tech enthusiasts among us are willing to latch on to them. Efficiency - These shades are a more efficient option for those who care about that kind of thing. They can be easily activated and set up to open or close automatically (how cool is that?!). Progressive - The "cool" factor is a big deal for people who fall into this category as well. They might not admit to it right off the bat, but they care deeply about what others think about them. As such, they want window shades that have that cool factor attached to them. The Dreamer: Sheer Curtains Finally, we land upon the dreamer. This is the person who views every day for the possibilities that it can bring. They are not scared off by those with a negative attitude. If anything, they believe that they can change those people! Instead, the dreamer wants sheer curtains because they bring in soft light, open spaces, and bring about a feeling of possibility all throughout the house. Sheer curtains are the ideal option for someone who classifies themselves in this way. They will receive plenty of compliments on their curtains, and they will appreciate how open they are to the world.  Which kind of person are you and which window treatment option makes the most sense for your personality? For more inspiration and ideas, reach out and contact us today.