Door light can seep through cracks and gaps, causing unwanted brightness in a room. Not only that, but these gaps can also allow outside elements such as dust, mold, and insects to enter the room. Over time, the constant exposure to light can cause damage to furniture and other items in the room.
The front door is often the main culprit for letting in light, but gaps on any part of the door can contribute to the problem.
Blocking light from door cracks is a great way to improve sleep quality and reduce energy costs. By using techniques such as weather stripping or installing a draft stopper, you can effectively reduce the amount of light entering through door gaps.
One common method for blocking light from door cracks is by using an under-door light blocker. These are typically made of foam or rubber and are placed at the bottom of doors to prevent light from entering through gaps underneath them.
But why is an under-door light blocker necessary? For starters, it helps create a more comfortable sleeping environment by reducing unwanted brightness in your bedroom. It can help lower your energy bills by preventing heat loss during colder months.
- MANY USES: Our double-sided door draft stopper conveniently slides under doors and windows to reduce cold drafts and wind, light, noise, smells and odors.
- LARGER SIZE: 2″ diameter EPE foam tubes especially for wider under door gaps. Easily cut to length to fit doors 32″ to 38″ wide. Smart velcro strips adjust to length for a neat finish.
However, there are some drawbacks to using an under-door light blocker. For one thing, they may not be effective if there are significant gaps or uneven surfaces underneath your door. They may also wear out over time and need to be replaced periodically.
If you’re still seeing light through your door even after installing an under-door light blocker, there could be several reasons why this is happening.
One possibility is that there are additional gaps or cracks around other parts of your door that need to be addressed. Another possibility is that your under-door light blocker isn’t thick enough or isn’t properly installed.
Read More: How To Keep Bugs Away From Led Strip Lights?

Benefits Of Blocking Light For Sleep And Privacy
Improved Sleep And Privacy: Benefits Of Blocking Light
Quality sleep is essential for overall health and well-being. Unfortunately, many factors can disrupt our sleep, including light.
Light exposure can interfere with the body’s natural sleep-wake cycle, making it harder to fall asleep and stay asleep. However, blocking light from door cracks can provide numerous benefits that improve the quality of sleep.
Regulating Sleep-Wake Cycle
Reduced exposure to light can help regulate the body’s natural sleep-wake cycle, also known as the circadian rhythm. The circadian rhythm is a 24-hour internal clock that controls various bodily functions, including when we feel sleepy or alert.
When exposed to light at night, our bodies produce less melatonin – a hormone that helps us fall asleep – which can lead to difficulty sleeping. By blocking light from door cracks, we reduce this exposure and promote better sleep.
Comfortable Sleeping Environment
Blocking light from door cracks provides a more comfortable sleeping environment by reducing distractions. Even small amounts of light can be disruptive and make it harder to fall asleep or stay asleep throughout the night.
Moreover, some people are more sensitive to light than others, meaning they require complete darkness to achieve optimal rest.
Enhancing Privacy
Apart from promoting better sleep quality and comfortability during rest time, blocking out lights also enhances privacy by preventing outsiders from seeing inside your room through gaps in doors or windows. This added privacy creates an environment where individuals feel secure and safe in their personal space.
Promoting Relaxation
A darker environment promotes relaxation and reduces stress levels since it signals the brain that it is time for rest; therefore one should not be on high alert mode anymore. A relaxed state is instrumental in achieving deep sleep stages required for physical restoration of the body.
Devices And Light Sources To Remove From The Bedroom
Keeping your bedroom dark is essential for getting a good night’s sleep. However, many people underestimate how much light can impact their ability to rest. Even small amounts of light can disrupt your circadian rhythm, making it harder to fall asleep and stay asleep.
Luckily, there are several things you can do to minimize light sources in your bedroom.
Remove Devices With Led Lights
One of the biggest culprits of light in the bedroom is electronic devices with LED lights. These include alarm clocks, televisions, and even some power strips. If you must keep these devices in your room, consider covering them with tape or cloth to block out the light they emit.
Keep Your Room Free From Electronic Devices
In addition to devices with LED lights, it’s best to keep all electronic devices out of the bedroom if possible. Smartphones and tablets emit blue light that can interfere with your body’s natural sleep cycle.
Plus, having these devices nearby makes it tempting to check email or social media late into the night.
Close Bathroom Doors
If you have an attached bathroom, make sure to close the door before going to bed. This will prevent any light from seeping into your room through cracks around the door frame.
Use Towels Or Strips
If there are gaps around your doors that let in too much light, use towels or strips of fabric to cover them up. You can tuck them under the door or use adhesive strips to hold them in place.
Dust And Clean Regularly
Finally, make sure you dust and clean regularly so that no cracks or crevices let in unwanted light. Dust accumulates quickly on window sills and baseboards where it can easily be blown into the air by drafts.
Eliminating Light Sources: Finding And Removing Them
Identifying And Removing Light Sources For A More Comfortable Environment
Light sources can be a nuisance, especially when they disrupt your sleep or work. Fortunately, there are ways to eliminate them. By looking at the edges of the door and finding any gaps or cracks where light is coming through, you can identify the light sources. Once identified, removing them is easy.
Removing Light Sources With A Strip Of Aluminum Or Metal Material
To remove the light sources, use a strip of aluminum or metal material that is cut to size and placed over the gap or crack. There are different types of materials and designs available for these strips, so choose one that will best suit your needs. This method not only helps to block out light but also reduces energy loss and noise from outside.
Reducing Energy Loss And Noise With Light Source Elimination
By eliminating these light sources, you can create a more comfortable and energy-efficient environment in your home or office. The reduction in energy loss means that you will save on your electricity bills while also reducing your carbon footprint. By blocking out noise from outside, you can increase productivity levels by creating a quieter workspace.
Case Study: How One Office Increased Productivity By Eliminating Light Sources
A recent case study found that an office increased its productivity levels by 15% after eliminating all light sources from door cracks.
The employees reported feeling less tired during the day due to better quality sleep at night as well as being able to concentrate better without external distractions.
Using Draft Stoppers To Block Light From Door Cracks
Door draft stoppers are an effective solution to block light from door cracks. Not only do they prevent the intrusion of light, but they also help keep pests, cold air, and drafts out while providing noise insulation, weather stripping, and draft guard insulator properties.
A pack of door draft stoppers can provide a cost-effective way to cover multiple doors in your home.
- NEW – FITS DOOR GAPS 0.25 – 2 INCHES: New upgrade door draft stopper for standard size 36” door and cover door gaps up to 2 inches, which can efficiently block cold drafts/breeze from entering the room and stay the warm air in the home
One popular choice for a door draft stopper is the Everlasting Comfort door draft stopper. This product is designed with high-density foam that provides excellent insulation against noise and temperature changes. The foam is covered with a soft fabric that makes it comfortable to use as well.
The Everlasting Comfort door draft stopper measures 36 inches long and 2 inches wide, making it suitable for most standard-sized doors.
Another option for blocking light from door cracks is using a white bottom door seal noise blocker. These products are designed to be installed at the bottom of your door and come in different sizes to fit various widths of doors.
They work by sealing the gap between the floor and the bottom of the door, preventing light and other elements from entering your room.
When choosing a door draft stopper or seal, it’s important to consider its effectiveness in blocking light as well as its durability and ease of installation.
Some products may require adhesive strips or screws for installation, while others simply slide under the door without any additional tools needed.
Installing Blackout Curtains To Achieve A Light-tight Room Or Doorway
Blackout curtains are a great solution for achieving complete darkness in any room or doorway. These curtains are made of blackout fabric, which is specially designed to block out light and create an ideal environment for sleeping, working, or relaxing.
In this section, we will discuss how to install blackout curtains to achieve a light-tight room or doorway.
Choosing The Right Blackout Curtain
- WELL MADE: Sold per pair, including 2 full blackout curtain panels – Panel measures: 52″W x 84″L|Set measures: 104″W x 84″L. Quality fabric with black liner feels soft and heavy, each panel has 7 back loops, fit well with standard or decorative curtain rods
- 100% BLACKOUT: Crafted from high quality polyester fabric. These magic solid curtain panels are sewn with black liner backing, definitely can block out 100% sun light, prevent 100% UV ray, reduce the noise and give your 100% privacy. The greatest benefit is to offer you a real dark, bringing you a good night’s sleep during the day
When selecting a blackout curtain, it is essential to choose one made of high-quality blackout fabric. This type of material is designed to block out light effectively and prevent any unwanted glare from entering your space.
To ensure that you get the right size, measure the width and height of your doorway and choose a curtain that is slightly larger than the measurement to cover any gaps.
Installation Process
Installing a blackout curtain is relatively easy. First, remove any existing curtains or blinds from your doorway.
Next, mount the curtain rod above the doorway with screws or brackets provided in the package. Then attach the hooks on your blackout curtains’ backside onto the rod.
Make sure that you adjust each panel’s length so that they hang evenly across your doorway.
Covering Large Gaps
If there are large gaps between your doorframe and wall where light can penetrate through even after installing a single layer of blackout curtains, consider using additional layers of fabric or installing another set of blackout curtains over them for maximum coverage.
You can also use adhesive strips or Velcro tape along with black-out fabric cloth to cover these gaps.
Melodieux Blackout Curtains
The Melodieux brand offers some excellent quality and affordable options for those looking for good quality black-out curtains suitable for their home improvement projects. The installation process is simple as it comes with all necessary hardware included in its packaging; hence no need to purchase extra accessories separately.
Window Covering Solutions For Blocking Light
Door Light Blockers: The Ultimate Solution For Blocking Light From Door Cracks
Are you tired of being woken up by the early morning sun or streetlights peeking through your windows and doors? Look no further than door light blockers!
Door light blockers are an effective solution to block light from door cracks by covering gaps between the door and frame. They provide insulation, noise reduction, and privacy.
Curtains: A Versatile Light Blocker
Curtains are a versatile window covering solution that can be used as a light blocker. Hanging curtains over the door or window frames is an easy way to prevent light from entering. They come in various styles, colors, and materials, allowing you to choose one that fits your decor style.
Blackout curtains are a popular choice for those who want complete darkness in their room. These curtains have special lining that blocks out all sunlight and provide thermal insulation to keep your room cool during hot summer days.
Shades: An Effective Window Covering Solution
Shades are another great window covering solution that can be installed inside or outside the window frame to block light. They come in different types such as roller shades, cellular shades, Roman shades, and more. Shades are easy to install and operate with manual or motorized controls.
Cellular shades offer better insulation compared to other types of shades because they have honeycomb-shaped pockets that trap air.
Weatherstripping: An Affordable Option
Weatherstripping is an affordable option to seal any gaps around your windows and doors. It prevents drafts from entering your home while blocking out unwanted light.
Applying weatherstripping along the bottom window frame can help seal any gaps between the frame and the sill.
Large Wind Guard Noise Blockers: Perfect For Large Gaps
Large wind guard noise blockers with adjustable sizes can cover larger gaps around doors and windows providing insulation while blocking out light at night time.
These wind guards act as a barrier against outdoor noise and weather conditions, making them ideal for those living in noisy neighborhoods or areas with extreme weather.
Covering The Wall Around The Door: An Easy Diy Solution
If you’re looking for a quick and easy DIY solution to block out light around your door, covering the wall around the door with paper or fabric can be an effective option.
This method is especially useful if you’re renting and cannot make permanent changes to your home. You can use tape or adhesive to attach paper or fabric to the wall surrounding your door.
Alternative Options: Velcro And Slide-in Door Drafters
Velcro And Slide-in Door Drafters: Alternative Options
If you’re looking for alternative options to block light and drafts from door cracks, Velcro and slide-in door drafters are excellent choices. These options can be used for both storm doors and interior doors to block the door gap.
Adjustable Door Draft Stopper
An adjustable door draft stopper is a great option for those who want to block light and drafts from their doors. They can be used on both interior and storm doors, making them a versatile option. The stoppers are adjustable, which means you can customize them to fit your door perfectly.
To install an adjustable door draft stopper, simply measure the length of your door gap and cut the stopper accordingly. Then, place it in front of the gap so that it blocks any light or drafts from coming through. You can use Velcro strips or adhesive tape to secure the stopper in place.
Door Sweeps
Another option to block light and drafts is by using a door sweep. Door sweeps attach to the bottom of your door frame with an adhesive strip or screws. They act as a barrier against any unwanted air or light that may come through the gap between your floor and the bottom of your door.
Installing a door sweep is relatively easy; all you need is some basic tools like a drill, screwdriver, or adhesive tape depending on how you want to attach it. Once installed properly, they will provide an effective solution for blocking out unwanted light sources while also keeping pesky drafts at bay.
Foil Vs Rubber Adjustable Size Door Sweep
While foil is an optional material that can be used to stuff the door gap, a more durable option is a rubber adjustable size door sweep that can be pinned or tucked on the sides of your door. This kind of sweep provides better insulation against noise pollution as well as air leaks compared with other materials like foam tapes or weather stripping products.
Rubber adjustable size door sweeps are available at most hardware stores, and they come in a variety of sizes to fit any door. They are easy to install and can be adjusted to fit the exact length of your door gap. Once installed, they will provide an effective barrier against light and drafts.
Conclusion: Effective Ways To Block Light From Door Cracks
Blocking light from door cracks is an essential step towards achieving quality sleep and privacy. It may seem like a minor issue, but even the slightest amount of light can disrupt your sleep pattern and lead to various health problems. In this article, we have explored several effective ways to block light from door cracks, including using draft stoppers, installing blackout curtains, and window covering solutions.
One of the most effective ways to block light from door cracks is by using draft stoppers. These are simple devices that you can easily make at home or purchase online. They work by sealing gaps between the door and the floor, preventing any light from entering your room. You can also use them on windowsills or any other areas where there are gaps.
Another way to achieve a light-tight room or doorway is by installing blackout curtains. These curtains are specially designed to block out all sources of light, making them perfect for bedrooms and other areas where you need complete darkness. They come in various styles and sizes, so you can choose one that suits your needs.
Eliminating all possible sources of light is also crucial in blocking out excess light from door cracks. This includes removing electronic devices such as phones, tablets, and laptops that emit blue lights that stimulate the brain and prevent proper sleep patterns.
Window covering solutions such as blinds or shades can also be used to block out excess light from entering your room through windows or doors with glass panels. These coverings come in different materials such as wood or fabric that provide varying degrees of opacity.
Alternative options such as Velcro strips or slide-in door drafters can also be used to block out excess light from door cracks effectively.
- 𝗨𝗻𝗱𝗲𝗿 𝗗𝗼𝗼𝗿 𝗡𝗼𝗶𝘀𝗲 𝗦𝘁𝗼𝗽𝗽𝗲𝗿: The 36 inch door stopper for bottom of door keeps the cold air out and the heat in with both sides protection. Great for blocking noise and fumes.
- 𝗘𝘅𝗰𝗲𝗹𝗹𝗲𝗻𝘁 𝗠𝗮𝘁𝗲𝗿𝗶𝗮𝗹: The under door draft guard is made of soft plush cloth, heavy-duty and lightweight.
- 🔶Easy to install: 34 “adjustable size for most homes. Please measure the gap and width of the door before purchasing and keep the door clean to ensure our draft stopper works as intended.
- 🔶 Large-size sponge: not ordinary slender sponge, which will not move with the opening of the door.
- 【SAVE YOUR MONEY】 The weather stripping stop the heat and cold from escaping during winter and summer. Makes heating and cooling your home or office more efficient and cost effective for reducing the heating & cooling bill.
- 【NOISE REDUCTION】- The door bottom seal designed by 2 layers of sealer, stop the noise, keep your room cozy and quiet!
- 👼【ONE SIDED DOOR DRAFT BLOCKER】—SYIPO One Sided Adjustable Under Door Draft Blocker is made from top quality styrofoam and abrasion resistant Fabric. Fits door up to 37”. Total height is 3.5″. Jumbo 1.2-inch diameter foam tubes are perfect for blocking extra-large gaps under your door. The Under Door Draft Stopper will protect your home against the elements, taking the brunt of rain, snow, dust, and other weather-related factors.Keep your home safe with the SYIPO One Sided Door Draft Stopper.
- 💵【NOISE REDUCTION AND SAVE ENERGY/MONEY】—Our SYIPO Door Draft Stopper designed Door sweep to adopte effectively reduce noise, prevent dust from entering through the door, and keep the room quiet and clean. Bottom door draft blockers prevent the leakage of air conditioning or heating, make your room more efficient in cooling or heating. And help you reduce electric cost so as to save you energy and money. Use our efficient draft blocker and enjoy the peace and quiet of your home, now!
- Large door draft stopper foam is 2 inches in diameter, which is larger than most sellers’ foam and can cover 0.5″ to 1.7″ doors gap.
- Keep you warm by blocking out cold air during the winter months. It’s also an outstanding noise reduction tool and can shut out light and odors. put one in your bedroom to help you sleep better
- HIGH QUALITY MATERIALS – 2 Pack Door Draft Stopper are made of silicone material, which can bend and deform. Draft stopper for bottom of door is very flexible and will not damage your floor. Door strip is also very durable and has a longer service life. Size: 2” W x 39” L
- PERFECT DESIGN – Door sweep triple design is adopted to effectively reduce noise, prevent dust from entering through the door, and keep the room quiet and clean. Self-adhesive door draft blocker is very suitable to cover the gaps of exterior/interior doors, rv doors, shower room, baseboard, threshold, windows, garage, basement and furniture
- 【Easy To Install And Adjustable size】: 30″ to 36″ adjustable size for most homes,fits tightly with the door especially for wider under door gaps,won’t fall during the moving,there is no need to bend over to reposition it when opening and closing the door
- 【Perfect Design And Multiple Effects】:Reduces noise, cold air, wind, light, and smells or noise,making the indoor more comfortable.Prevent dust and rainwater,keep stain away keep the temperature stable if you have a air conditioner, reduce light and noise affect your sleep quality,stop little animals may go through the door gap to visit your room
- YEAR ROUND ENERGY COST SAVER: Our door stoppers work effectively for all season use keeping cold or warm air in, which can save you up to 20 percent on your yearly energy bills
- THICKER for BETTER BLOCKING: Door seal’s 2″ thick foam ensures it’s an effective under door noise stopper, door wind blocker, door light blocker, door odor blocker, and under door bug stopper
- Unique Triangular Design – With the triangular design, it fits the door seam tightly to the greatest extent and achieves the maximum blocking effect. The inner enough weight filler and the exterior soft fabrics let this door blocker and the door closely fit to block wind, dust, and light. Simple, smart, and incomparably effective, this draft blocker helps prevent exterior drafts making it more efficient to heat and cool your home.
- Multi-Function Door Noise Blocker – The door draft stopper can keep dust and wind out of the door, and also can effectively block excessive noise and light through the cracks of your bedroom at night. This fabric draft stopper works wonders on your front door, bedroom, closet, bathroom, patio, sliding doors, or even your windows. Good home supplies for everyone.
- QUALITY FABRIC: The under door draft stopper heavy duty is filled with polyester wadding and especially added glass beads to add its weight. Compared to other similar products, the entire interior of our weighted door stopper is filled with glass beads instead of sandbags. The glass beads are evenly filled inside to ensure that the door windshield sits smoothly on the floor and performs better.
- CONVENIENT TO USE: The door draft guard is easy to install and remove. Just apply the included hook tape to your door, then stick the door draft stopper. It can fit closely and firm. Hook-and-loop fixation is used on the door to prevent it from moving with the opening of the door. Can also be used without hook-and- loop adhesive.