Maximizing Energy Efficiency: A Comprehensive Guide to Storm Windows for Casement Windows

Casement windows are a popular choice for homeowners due to their unique design and functionality. These windows open outward with the help of a crank and provide excellent ventilation and unobstructed views. However, their unique design can also make it challenging to find the right storm windows to maximize energy efficiency. In this comprehensive guide, we will explore the benefits of storm windows, the different types available, and how to choose the perfect storm windows for your casement windows.

The Benefits of Storm Windows

Storm windows are an essential addition to any home, particularly in regions with harsh weather conditions. They provide an extra layer of insulation, helping to reduce drafts and increase energy efficiency. Here are some of the key benefits of installing storm windows:

1. Energy Efficiency: Storm windows help reduce heat loss during the winter months and heat gain during the summer months, resulting in lower energy bills.

2. Noise Reduction: By adding an extra layer of insulation, storm windows can help reduce outside noise, making your home more peaceful and quiet.

3. UV Protection: Storm windows can block harmful ultraviolet (UV) rays, protecting your furniture and flooring from fading.

4. Protection from the Elements: Storm windows can help protect your home from damage caused by wind, rain, and debris.

5. Increased Home Value: Installing storm windows can increase the value of your home, as potential buyers will appreciate the added energy efficiency and protection.

Types of Storm Windows

There are several types of storm windows available, each with its advantages and disadvantages. Here are the most common types of storm windows you can choose from:

1. Exterior Storm Windows: These storm windows are installed on the outside of your existing windows and are the most common type. They are relatively easy to install and can be removed during the warmer months if desired. Exterior storm windows are available in various materials, including aluminum, vinyl, and wood.

2. Interior Storm Windows: As the name suggests, these storm windows are installed on the inside of your existing windows. They are an excellent option for casement windows, as they do not interfere with the window's operation. Interior storm windows are typically made of acrylic or glass and can be either permanently installed or removable.

3. Magnetic Storm Windows: These storm windows use magnetic strips to attach to your existing window frame. They are easy to install and remove, making them a popular choice for renters or those who want a temporary solution. Magnetic storm windows are typically made of acrylic or polycarbonate and can be used on both the interior and exterior of your home.

4. Indow Windows: Indow windows are a unique type of interior storm window that uses a patented compression system to fit snugly within your existing window frame. They are custom-made to fit your windows perfectly and provide excellent insulation and noise reduction. Indow windows are made of acrylic and do not require any hardware for installation.

Choosing the Right Storm Windows for Your Casement Windows

When selecting storm windows for your casement windows, there are several factors to consider. Here are some tips to help you make the right choice:

1. Compatibility: Ensure the storm windows you choose are compatible with casement windows and will not interfere with their operation. Interior storm windows are often the best choice for casement windows, as they do not obstruct the window's crank mechanism.

2. Material: Consider the material of the storm windows, as this can impact their durability, insulation, and maintenance requirements. Aluminum and vinyl storm windows are low-maintenance and resistant to the elements, while wood storm windows may require more upkeep but offer a more traditional appearance.

3. Installation: Determine whether you want a permanent or removable storm window solution. Permanent storm windows provide better insulation and protection, while removable storm windows offer more flexibility and can be taken down during the warmer months.

4. Customization: If you have uniquely shaped or sized casement windows, you may need to invest in custom storm windows to ensure a proper fit. Indow windows are an excellent option for custom solutions, as they are made to measure for your specific window dimensions.

5. Budget: Storm windows can range in price depending on the type, material, and customization options. Determine your budget and prioritize the features that are most important to you to find the perfect storm windows for your casement windows.

By taking the time to research and select the right storm windows for your casement windows, you can enjoy the benefits of increased energy efficiency, noise reduction, and protection from the elements. With a variety of types and materials available, there is a storm window solution to suit every home and budget.

Casement Window


Casement windows are the most common style of window. They feature hinged panels that swing open and closed. Casement windows are available in single panels or multiple panels. The direction a door swings, either to the right or the left, is called the handing. In addition to handing, window are identified as either inswing or outswing depending on whether they open into the house or towards the outside.


Our team of experts will work with you to develop a bespoke plan that fits your needs. We take a holistic approach to the planning process, combining our technical expertise with our knowledge of customer requirements and project constraints.


Freedom to dream "truly custom-made"

Doorwin provides one-stop solution for professional windows doors manufacturer and installation. We have been serving customers with our high quality and branded products in United States, Asia and worldwide.


This newly built private house is in Sydney, Australia. The area occupied by the fenestration system in our scheduled design drawings was up to more than 110 square meters. A wide range of design details made the perfect mix of modern aesthetics and traditional sophistication, the simulated vertical hung windows with tilt & turn opening systems in this home are absolutely breathtaking. SDLS (Simulated Divided Lites with Spacer Bar) brings some historical vintage feeling to the whole building without losing any energy saving performance. Long narrow fixed windows creating larger-than-life expenses, coupled with German high-end systems made this project stand out from the rest.

Simulated Hung Window with Tilt & Turn Openings

The client's idea was to maintain a certain vintage feel, and our aim was to meet the energy efficiency needs and standards of modern houses as much as possible while maintaining a retro design. Doorwin’s 61S simulated hung windows with tilt & turn openings is a respectful modernization of a classic architectural masterwork.

Why choose the tilt and turn opening method?

Because it generally has better air seals than sliding, single hung, or double hung window frames. Tilt and turn windows form a complete seal when fully closed, this means they are less prone to water leakage, and cold draughts and you’ll keep more of your heating indoors where it belongs. They can be opened in the upper tilt way to ventilate at a minimum opening status and are easy to clean outside of the glass; when there’s a good day, they can be opened as normal inward casement windows.

Large Energy Efficient Fixed Windows

Our well-crafted bespoke systems enhance the functionality and panoramic view of this modern house.

Huge, fixed glass walls up to seven meters long and two meters high bring great lighting and open views, making it really refreshing to the mind. Five meters high long narrow windows give the whole building a contemporary aesthetic.

Every window’s placement and shape not only add to the uniqueness of this home but also provide a more energy-saving ability for the owners.

Doorwin energy-efficient integrated glazing units feature double-pane glass, warm-edge spacers, argon gas fill, Low-E coatings, and fully tempered glass, they can not only create a comfortable and natural indoor environment but also save electricity bills and heating bills of more than 100 USD for the owner, it’s a real bargain compared to choosing a regular glazing set.

Custom Designed Thermal Break Aluminum Entry Door

Aluminum Door offered an air of uniqueness and elegance to a home. With their luxurious patterns and beautiful finishes, it provides this house with a bounty of aesthetics and security. Aluminum entry doors allow you to resist any weather extremes, corrosion, and pests. So aluminum is one of the most resilient and durable materials you can select for front doors considering the price/performance ratio.

With pieces of double panes, and Low-E tempered glass. The door provides a good insulation performance.

Custom Designed Grilles and Transom

Divided lite windows and doors offer unique architectural solutions for buildings without compromising energy efficiency or aesthetics. Doorwin provides multiple muntin and glass options to customize your divided lite windows and doors. Further customization is available with a variety of colors and materials, creating an infinite number of design combinations to best suit your style.

In this project, we use SDLS (simulated divided lites with spacer bars), these bars permanently adhere to both sides of the glass, and spacer bars are installed between the glass, this is the most energy-efficient way to create the look of classical décor grilles. The windows in the bathroom bedroom and study have an Arch Transom Design, making these rooms, which are often used by the owner, have some traditional aesthetics.

BTW, Doorwin offers free design assistance, so if you need a custom design like this one, contact us right away and we will provide you with the most aesthetically and functionally pleasing design solution.

German Imported Hardware System

For windows and doors, hardware is as important as the engine is to the car. The continuous technological innovation of the European hardware industry has strongly promoted the performance improvement and functional innovation of windows and doors. In this project, Doorwin uses Hoppe™ multi-point locks, hinges, and handles from Germany.

Multi-point lock systems provide not only the burglar-resistance but also a tighter compression seam, making the window keeps good energy-efficient performance. Together with Technoform Bautec’s insulation edge bond and sealant strips, these make up our products' top insulation and energy-saving performance.

Save Your Money On Installation Costs

We have several international patents to reduce clients’ labor costs, such as our unique flanges and assembly type tubular design, which is different from the other products on the market. What sets us apart among Chinese counterpart is that all our products are equipped with nail fin structures for quick and easy installation. Labor costs during installation may exceed of the window and door price, therefore, our exclusive patent allows users to not only get a significant increase in installation efficiency, but also greatly reduce the labor cost of window and door installation. A cost that may bring you unexpected savings that far exceed the price difference you may care about now.

Free Design Assistance

With our own expertise, we provided the no-cost design development and contract documentation with CAD & BIM drawings, including elevation, details about the project, and installation help.

Before production, we will provide accurate sample drawings, which will clearly show the cross-sectional pattern, size, opening method and direction, pattern of the warm spacer, and the installation nodes. We will not go into production until you have signed off on the drawing to ensure that you receive a final product that meets the exact requirements of your project.

About Doorwin

Doorwin's professional packing system guarantees all products are delivered safely and without any damage. We apply a four-point packing system. Firstly, adhesive plastic film is applied on interior wood frames and exterior aluminum frames to avoid scratches on the surface. Then, a paper board is applied after we apply air bubble film surrounding the whole windows/ doors to avoid any destruction or clash. Lastly, we place them into a durable non-fumigation plywood crate to avoid any possible damage during transportation.

With years of experience shipping our products worldwide, we could guarantee to ship our products to their final destinations intact and without any damage.

About Doorwin Factories

Doorwin is one of the most professional window & door manufacturers are known for its great customized products. In Doorwin, a variety of colors, styles, and sizes of products are available to meet the client’s unique requirements. We own three ISO9000-certified modern factories in China. With a factory area of 20,000 m2 and a production capacity of 100,000 m2 per year. Doorwin Group has the scale to ensure timely delivery and the flexibility to reduce manufacturing lead times to as short as 18 days.