Casement Window Tie Bar Guide: Enhancing Security and Functionality

Casement windows are a popular choice among homeowners due to their versatility and timeless design. One crucial component of these windows is the tie bar, which plays a significant role in enhancing security and functionality. This comprehensive guide will discuss everything you need to know about casement window tie bars, including their purpose, types, installation, and maintenance.

The Purpose of Tie Bars in Casement Windows

Tie bars serve multiple functions in casement windows. They provide additional security by connecting the window's locking system to the frame, ensuring that the window stays firmly in place when closed. Furthermore, they help maintain the window's structural integrity by distributing the weight and stress evenly across the frame. This prevents warping and ensures that the window operates smoothly over time.

Types of Tie Bars for Casement Windows

There are several types of tie bars available for casement windows, each with its unique features and benefits. Some of the most common types include:

1. Standard Tie Bars:These are the most basic type of tie bar and are typically made of steel or aluminum. They are designed to provide a secure connection between the locking system and the window frame, ensuring that the window stays in place when closed.

2. Decorative Tie Bars:Decorative tie bars serve the same purpose as standard tie bars but feature an aesthetically pleasing design. They are available in various materials, colors, and styles to match the window's overall appearance.

3. Telescopic Tie Bars:These tie bars are designed to be adjustable in length, allowing for a custom fit on various window sizes. This feature makes them an ideal choice for homeowners with non-standard window sizes.

4. Multipoint Tie Bars:Multipoint tie bars are equipped with multiple locking points along the bar, providing enhanced security for the window. They are particularly useful for large casement windows or those in areas prone to break-ins.

Installing Tie Bars on Casement Windows

The installation process for tie bars on casement windows is relatively straightforward, but it is crucial to ensure that the correct type and size of tie bar are chosen for the specific window. Here is a step-by-step guide to installing a tie bar on a casement window:

1. Measure the window's height and width to determine the appropriate size and type of tie bar needed.

2. Purchase the required tie bar and gather the necessary tools, such as a drill, screws, and a screwdriver.

3. Open the casement window fully and locate the pre-drilled holes on the window frame for the tie bar installation.

4. Align the tie bar with the holes and secure it in place using the provided screws. Ensure that the tie bar is parallel to the window frame and does not obstruct the window's operation.

5. Test the window's locking mechanism to ensure that the tie bar is functioning correctly and providing the desired level of security.

Maintaining Casement Window Tie Bars

Regular maintenance of casement window tie bars is essential to ensure their longevity and proper functioning. Here are some maintenance tips to keep in mind:

1. Clean the tie bar regularly using a cloth and mild detergent to remove dirt and debris that may accumulate over time.

2. Inspect the tie bar for signs of wear or damage, such as rust or loose screws. If any issues are identified, address them promptly to prevent further damage.

3. Lubricate the moving parts of the tie bar, such as the locking mechanism and hinges, with a silicone-based lubricant to ensure smooth operation.

4. Periodically check the alignment of the tie bar and adjust it as necessary to maintain proper functionality.

By understanding the importance of tie bars in casement windows and following the installation and maintenance guidelines outlined in this guide, homeowners can ensure that their windows remain secure and functional for years to come. With the right tie bar in place, casement windows can provide the perfect balance of style, security, and performance.

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.