How to Revive and Repair Your Wood Casement Windows: A Comprehensive Guide

Wood casement windows are a timeless and elegant feature in any home. They provide a classic look and feel, while also offering the benefits of natural insulation and durability. However, like any other part of your home, wood casement windows can deteriorate over time due to weather, age, and general wear and tear. If you're looking to bring your wood casement windows back to life, this comprehensive guide will walk you through the steps required to repair and revive them.

Assessing the Damage

Before diving into the repair process, it's important to assess the extent of the damage to your wood casement windows. Start by examining the frame, sash, and hardware for any signs of damage or wear. This may include rotting wood, cracked or broken glass, damaged seals, or malfunctioning hardware. Make a note of any issues you find, as this will help you determine the necessary repairs and materials needed.

Gathering the Tools and Materials

To successfully repair your wood casement windows, you'll need the following tools and materials:



Pry bar

Utility knife


Sandpaper (various grits)

Wood filler or epoxy

Wood glue

Paint scraper


Primer and paint (or stain and sealer)

Replacement glass (if necessary)

Replacement hardware (if necessary)

Removing the Sash

The first step in repairing your wood casement windows is to remove the sash from the frame. This will allow you to access the damaged areas and make the necessary repairs. To do this, carefully unscrew and remove any hardware holding the sash in place, such as hinges or latches. Once the hardware is removed, gently lift the sash out of the frame and set it aside on a clean, flat surface.

Repairing the Wood

If you've discovered rotting or damaged wood in your casement window frame or sash, you'll need to repair or replace the affected areas. For minor damage, use a chisel to remove any loose or rotten wood, and then fill the void with wood filler or epoxy. Allow the filler to dry according to the manufacturer's instructions, and then sand it smooth using sandpaper.

For more extensive damage, you may need to replace entire sections of the frame or sash. Carefully remove the damaged wood using a pry bar or chisel, and then cut a new piece of wood to match the dimensions of the removed section. Attach the new piece using wood glue and secure it with nails or screws as needed.

Replacing the Glass

If your wood casement windows have cracked or broken glass, you'll need to replace it. Carefully remove the old glass by gently tapping it with a hammer and chisel, being sure to wear protective gloves and eyewear. Once the glass is removed, clean the sash of any remaining glass shards and old glazing compound.

Measure the opening for the new glass and have a piece cut to size at your local hardware store. Apply a thin layer of glazing compound to the sash, and then carefully set the new glass in place. Press the glass firmly into the compound, and then use a glazing tool to apply more compound around the edges, smoothing it out as you go.

Refinishing the Wood

Once all repairs have been made, it's time to refinish your wood casement windows. Start by sanding the entire frame and sash with medium-grit sandpaper to remove any old paint or stain. Wipe down the surfaces with a damp cloth to remove any dust, and then apply a coat of primer to the wood, allowing it to dry according to the manufacturer's instructions.

Once the primer is dry, apply your chosen paint or stain to the wood, following the grain and using long, even strokes. Allow the first coat to dry, and then apply additional coats as needed, sanding lightly between coats for a smooth finish. Finally, apply a sealer to protect the wood and ensure a long-lasting finish.

Reassembling the Window

With your wood casement windows repaired and refinished, it's time to reassemble them. Carefully place the sash back into the frame, and then reattach any hardware that was removed earlier. Test the window to ensure it opens and closes smoothly, and make any necessary adjustments to the hardware as needed.

Your wood casement windows should now look and function like new, providing beauty and functionality to your home for years to come. Remember to regularly inspect and maintain your windows to prevent future damage and ensure their longevity.

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.