How to Block Light from Transom Window Effectively

Discover the most effective methods to block out light from your transom window for a more comfortable and serene living space.

Transom windows are a beautiful addition to any home. They allow natural light to enter your space and create an open, airy feel.

However, sometimes too much light can be a problem. Whether it’s for privacy reasons or simply because the sun is shining too brightly into your room, blocking light from transom windows is a common concern among homeowners.

In this blog post, we’ll explore some effective ways to block out excess light and maintain the perfect balance of natural lighting in your home. So let’s get started!

Benefits of Blocking Light

Transom Window curtain

First and foremost, it provides privacy by preventing outsiders from peering into your home. This is especially important if you live in a busy area or have nosy neighbors.

Blocking excess light can help regulate the temperature of your room and reduce energy costs associated with air conditioning during hot summer months. It also protects furniture, carpets, and other household items from fading due to prolonged exposure to sunlight.

Moreover, reducing glare on computer screens or televisions makes it easier for you to work or relax without straining your eyesight. And lastly but not least importantly – controlling the amount of natural light entering a room creates an ambiance that suits different moods throughout the day.

Choosing the Right Materials

Reflective Window Films

The material you choose will determine how effective your light-blocking solution will be and how long it will last. Some of the most popular materials for blocking out excess light include window film, curtains, shades, covers and smart glass technology.

Window films are a great option if you want to maintain natural lighting while reducing glare or heat gain in your room. They come in different levels of opacity and can be easily installed on any type of glass surface.

Curtains are another popular choice for homeowners who want complete privacy or darkness when they need it. Blackout curtains made with thick fabrics like velvet or suede can effectively block out all sunlight from entering through transom windows.

Shades offer a more versatile option as they come in various styles such as roller shades that roll up into a small cassette when not needed; cellular shades that provide insulation benefits; Roman Shades which add elegance to any space among others.

Custom-made covers also provide an excellent way to block out unwanted sunlight while adding aesthetic value to your home’s interior design scheme. Smart Glass Technology is another innovative solution where electrochromic coatings change their tint based on external factors such as temperature changes or daylight intensity levels providing energy efficiency benefits too!

Measuring the Transom Window

Window measurement height

Measuring a transom window may seem like a daunting task, but with some basic tools and techniques, it can be done easily.

To measure your transom window accurately, start by measuring the width and height of both the glass pane and frame. Use a tape measure or ruler to get precise measurements in inches or centimeters.

Make sure to take into account any obstructions such as handles or locks that may affect how much space is available for installation.

Once you have measured all sides of your transom window carefully, record these dimensions on paper so that you don’t forget them when shopping for light-blocking solutions later on.

Remember: accurate measurements are crucial when choosing any type of covering solution for windows.

Temporary Light-Blocking Solutions

blackout curtains for bedroom

One of the most popular solutions is using blackout curtains or drapes. These can be easily installed over your existing window treatments and provide an effective way to block out excess light.

Another option is using adhesive-based window film that can be applied directly onto the glass surface of your transom windows. This type of film comes in various shades, patterns, and designs that not only help reduce glare but also add privacy to any room.

You may also consider applying removable static cling films which do not require adhesives or glue for installation; they stick on their own due to static electricity charges between the film’s surface and glass pane.

Permanent Light Blocking Solutions

house window film

One of the most popular solutions is installing window film. Window films come in various shades and designs, allowing you to choose the perfect one that complements your home’s decor while blocking out excess light.

Another option is using blackout curtains or shades. These can be custom-made to fit your transom windows perfectly and provide complete darkness when closed.

For those who prefer a more decorative approach, painting the glass with an opaque paint or adding decorative elements such as stained glass can also effectively block out unwanted light while enhancing the aesthetic appeal of your space.

It’s important to note that some permanent solutions may require professional installation for optimal results. It’s always best to consult with a trusted contractor before making any major changes or installations in your home.

Installing Window Film

Window Film install

Window films are available in various types, including frosted, tinted, and decorative options. They can be easily installed by following the manufacturer’s instructions or hiring a professional installer.

To install window film on your transom window:

  1. Clean the glass surface thoroughly with soap and water.
  2. Measure the size of your transom window accurately.
  3. Cut the film according to your measurements using scissors or a utility knife.
  4. Peel off one side of the protective backing paper from the adhesive side of the film.
  5. Apply it carefully onto one corner of your clean glass surface while holding it tautly across its width so that there are no wrinkles or bubbles underneath it as you work towards another corner until all sides have been covered evenly without any air pockets trapped inside them
  6. Use an application tool such as squeegee to smooth out any remaining bubbles under pressure.

Window films not only provide privacy but also offer insulation benefits by reducing heat gain during summer months and heat loss during winter months which helps save energy costs over time.

Using Blackout Curtains

house window Thermal Curtains

These curtains are made of thick, opaque fabric that prevents sunlight from entering your room. They come in various colors and styles, so you can choose the one that best matches your decor.

When choosing blackout curtains for your transom window, make sure to measure the size of the window accurately. You want to ensure that you purchase a curtain with enough coverage to completely block out any unwanted light.

Installing blackout curtains is relatively easy and can be done by anyone with basic DIY skills. Simply attach curtain rods above or inside the frame of your transom window and hang up the curtain panels accordingly.

One thing to keep in mind when using blackout curtains is their insulation benefits as well as their ability to reduce energy costs by keeping heat inside during winter months or blocking it outside during summer months.

Applying Window Shades

blockout roller blinds

They come in a variety of styles and materials, including roller shades, cellular shades, and Roman shades. When choosing window shades for your transom window, it’s important to consider the size and shape of the window as well as your personal style preferences.

Roller Shades: These are an excellent choice if you’re looking for a simple yet effective way to block out light. Roller shade fabrics range from sheer to blackout options that can completely darken any room.

Cellular Shades: Also known as honeycomb blinds or pleated blinds; they offer superior insulation properties while still allowing natural light into space.

Roman Shades: These provide an elegant look with their soft folds when raised but also offer complete privacy when lowered down. Applying these types of window treatments is relatively easy since most manufacturers include installation instructions with each purchase.

However, if you’re not comfortable installing them yourself or have unique requirements such as motorized operation or custom sizes then hiring professionals would be ideal.

Custom-Made Window Covers

window shade install

These covers can be made to fit the exact measurements of your window, ensuring that they provide complete coverage and maximum light-blocking capabilities.

One popular type of custom-made cover is a shutter-style design. These shutters can be installed on the interior or exterior of your home and come in various materials such as wood, vinyl, or composite.

They offer both privacy and light control while adding an elegant touch to any room.

Another option is custom-made blinds that are specifically designed for transom windows. These blinds come in different styles such as honeycomb shades or vertical blinds with slats that can be adjusted according to your preference.

When considering custom-made window covers, it’s essential first to measure accurately so you get the perfect fit for your transom window. You’ll also need to choose between manual operation or motorized options depending on how frequently you plan on adjusting them.

Painting the Glass

Painting the window Glass

This method provides a permanent solution that can also add an artistic touch to your home decor. You can use frosted or opaque paint, which will allow some natural light in while still providing privacy and blocking out excess sunlight.

Before you start painting, make sure to clean the glass thoroughly and remove any dirt or debris. Then, apply painter’s tape around the edges of the window frame to protect it from getting painted over.

Next, choose a high-quality paint that is specifically designed for glass surfaces. Apply several thin coats of paint with a brush or spray gun until you achieve your desired opacity level.

Once dry, carefully remove the painter’s tape and enjoy your newly painted transom window! Keep in mind that this method may not be suitable for everyone as it permanently alters the appearance of your windows.

Adding Decorative Elements

home Stained Glass

There are many options available, from stained glass panels and frosted designs to etched patterns and custom decals. These decorative elements not only provide privacy but can also add a touch of elegance or personality to any room.

Stained glass panels are an excellent choice for those who want both beauty and functionality in their transom windows. They come in various colors, textures, and designs that can complement any interior style or color scheme.

Frosted films or etched patterns offer another option for blocking light while adding visual interest. These treatments create a translucent effect on the glass surface without completely obstructing natural light from entering the room.

Custom decals are perfect for homeowners who want something unique that reflects their personal taste or interests. You can choose from pre-made designs or have one created specifically for you by an artist/designer.

Incorporating Smart Glass Technology

Smart window Glass Technology

This type of glass can be electronically controlled to switch between transparent and opaque states, providing privacy when needed while still allowing natural light to enter your space. Smart glass technology also offers energy efficiency benefits by reducing the amount of heat that enters or escapes through your windows.

Incorporating smart glass into your home may require professional installation, but it’s worth considering if you’re looking for a long-term solution that adds value to your property. With this advanced technology, you can easily control the level of transparency with just a touch of a button on an app or remote control.

While smart glass may come at an additional cost compared to other solutions like curtains or shades, its durability and longevity make it well worth the investment in terms of both convenience and functionality.

DIY Light Blocking Techniques

glass spray paint

There are several easy and affordable methods that you can try at home without having to hire a professional.

One popular technique is using blackout fabric or paper. You can purchase these materials at any craft store or online retailer and cut them to fit your transom window’s dimensions.

Simply attach the material with double-sided tape or Velcro strips for an easy-to-remove option.

Another DIY method is creating a custom-made cover using foam board insulation sheets covered in fabric of your choice. This technique not only blocks out light but also provides additional insulation benefits, making it ideal for colder climates.

If you’re feeling creative, consider painting the glass on your transom window with frosted glass spray paint or stenciling designs onto it with etching cream. These options allow natural light into space while still providing privacy and blocking out excess sunlight.

Insulation and Energy Efficiency Benefits

window insulation

By blocking out excess light, you can reduce the amount of heat that enters your home during hot summer months and prevent warm air from escaping during colder seasons. This means that you’ll be able to maintain a comfortable temperature in your living space without relying too heavily on heating or cooling systems.

In addition to reducing energy costs, insulating your transom window also helps to minimize noise pollution from outside sources such as traffic or construction sites. The added layer of insulation acts as a sound barrier, creating a more peaceful environment inside.

There are several ways to insulate and improve the energy efficiency of your transom windows while still maintaining their aesthetic appeal. From using insulated glass panels and applying weatherstripping tape around the frame edges, there are many options available for homeowners looking for an eco-friendly solution.

When to Hire a Professional

professional window treatment install

If you’re not confident in your ability to measure and install window treatments or if you have a particularly large or complex transom window, hiring a professional can save time and ensure that the job is done correctly.

Some of the more permanent solutions such as applying window film or painting glass require specialized tools and expertise. A professional installer will have access to these tools and be able to complete the installation quickly without damaging your windows.

When considering whether or not to hire a professional for your light-blocking needs, weigh factors such as cost, complexity of installation process required materials against potential damage caused by incorrect installations.

Professional Installation Options

professional window curtain install

Professional installation ensures that the job is done correctly and efficiently, saving you time and potential headaches down the road.

When it comes to transom windows, there are several professional installation options available. Many window treatment companies offer custom-made shades or curtains specifically designed for transom windows.

These professionals will measure your window precisely and create a solution tailored to fit perfectly.

Another option is hiring a contractor who specializes in installing smart glass technology or other permanent light-blocking solutions such as tinted glass or frosted film. They can help determine which solution best fits your needs based on factors like privacy concerns, energy efficiency goals, and overall aesthetic preferences.

Maintaining the Light-Blocking Solution

snow outside house window cleaning

Regular cleaning is essential for all types of light-blocking solutions. Dust and debris can accumulate on curtains, shades, and blinds over time, which can reduce their effectiveness in blocking out light.

For window films or painted glass solutions, avoid using abrasive cleaners that could scratch or damage the surface. Instead use a soft cloth with mild soap and water to clean them gently.

If you have installed custom-made covers or smart glass technology for your transom windows make sure they are functioning properly by checking them regularly as per manufacturer instructions.

In addition to regular cleaning and maintenance checks of your chosen solution(s), consider re-evaluating their effectiveness periodically especially if there has been any changes in lighting conditions such as new construction nearby that may affect how much sunlight enters through the windows.

How Do You Cover a Window Without Curtains?

Window Shades

One option is using a window film or tinting. Window films come in various shades and designs, allowing you to choose the level of privacy and light-blocking that suits your needs.

Another option is using blinds or shades specifically designed for transom windows. These products are made with the unique shape of transom windows in mind and provide a perfect fit without obstructing any part of the window.

You could also consider adding decorative elements such as stained glass panels or frosted glass decals to add some style while still blocking out excess light.

If you’re feeling creative, there are plenty of DIY solutions available online that use materials like cardboard or fabric to create custom-made covers for your transom windows.


What do you cover a transom window with?

A transom window can be covered with privacy window film, transom window blinds, or standard drapes hung over them using a curtain rod.

How do you completely block a window light?

To completely block window light, cover your window with tinfoil, an inexpensive and airtight material that achieves total darkness.

How do I stop the light from coming through the top of my blinds?

To stop the light from coming through the top of your blinds, you can use Light Blockers, which are available on most roller shades and can be ordered during the configuration process for maximum light control.

Should I cover transom windows?

Yes, you should cover transom windows to maintain room temperature and enhance comfort using curtains, plantation shutters, or other suitable window treatments.

What are the most effective materials for blocking light from a transom window?

The most effective materials for blocking light from a transom window include blackout curtains, light-blocking window film, and shades.

Can window films be used to reduce light transmission through transom windows?

Yes, window films can be used to reduce light transmission through transom windows.

Are there any DIY solutions for temporarily blocking light from a transom window?

Yes, a DIY solution for temporarily blocking light from a transom window is to use blackout curtains, shades, or temporary blinds.