How to Cover an Apex Window: A Complete Guide

Apex windows — also known as gable, triangular, or cathedral windows — are stunning architectural features that add character and natural light to a space. However, covering them can be a challenge due to their unconventional shape. Whether you’re looking for privacy, light control, insulation, or simply a stylish finishing touch, this guide walks you through the best ways to dress your apex window.

In this guide, we will also explore various styles of curtains that complement apex windows, practical tips for selecting the right fabric, and innovative design ideas that can enhance the overall aesthetic of your room. We will examine how apex windows can be a focal point in your home, enhancing both decor and natural light. Additionally, we will provide you with insight into DIY options for those who are looking to take on a project themselves, as well as when to call in professionals to ensure the best results.


1. Understand the Structure of Your Apex Window

When assessing the structure of your apex window, it is essential to consider the architectural style of your home. For instance, in traditional homes, maintaining the classic look while integrating modern functionality is critical. In contrast, contemporary homes might benefit from sleek lines and innovative materials. This understanding will guide your decisions on curtain styles that not only fit but also enhance your home’s overall design.

Before choosing a solution, assess the layout:

  • Is your apex window one complete triangle or a triangle above a rectangular section?
  • Is the frame recessed or flush with the wall?
  • Do you want full blackout, partial shading, or purely decorative coverage?

Knowing these details helps determine the best curtain style, track system, and fabric.


2. Curtain Options for Apex Windows

✔️ Made-to-Measure Curtains

Custom curtains are the most elegant and effective way to dress apex windows. They are tailored to fit the angles and dimensions perfectly.

Popular heading styles:

  • Pinch Pleat: Offers a tailored, luxurious finish.
  • Pencil Pleat: Versatile and more traditional.
  • Wave Curtains: Contemporary and minimal, but require more width for stacking.

Curtain designs for apex shapes:

  • Split Pair: Curtains open from the centre and are angled to match the triangular slope.
  • One-Way Stack: Ideal when space is limited on one side.
  • Fixed Panels: For decorative or semi-permanent coverage.

3. Track and Pole Solutions

Exploring various curtain designs can greatly enhance your apex window treatment. Split pair curtains, for example, not only provide a functional approach to privacy but also allow for creative styling, where you can choose contrasting colors or patterns that reflect your personality. Incorporating textured fabrics can add an extra dimension to your space, making it feel more inviting and visually interesting.

Standard curtain poles often won’t work for apex shapes. Instead, opt for:

  • Bespoke Angled Curtain Tracks: Made to follow the slope of the window frame, allowing smooth movement.
  • Motorised Tracks: Perfect for tall or hard-to-reach apex windows, enabling remote operation.

Pro tip: Use white aluminium or discreet tracks that blend into the ceiling or window trim.


4. Alternative Covering Solutions

🪟 Shaped Shutters

  • Custom-made shutters shaped to the triangle can provide privacy and light control.
  • Great for a clean, fitted look.
  • More expensive and less flexible than curtains.

🪟 Perfect Fit Blinds

When selecting a curtain style, consider how it interacts with the natural light throughout the day. For example, sheer curtains can provide gentle light diffusion during the day, while blackout options are ideal for those who prefer a darker ambiance in the evening. Consider layering different types of curtains for flexibility, allowing you to adjust the light and privacy levels according to your needs.

  • Suitable for rectangular sections under the apex.
  • Often paired with shaped curtains for full coverage.

🪟 Voiles and Sheers

  • Ideal for soft diffused light.
  • Can be layered behind blackout curtains for dual function.

5. Fabric Considerations

  • Blackout fabrics are ideal for bedrooms or cinema rooms.
  • Thermal linings help with insulation and energy efficiency.
  • Lightweight voiles soften the space and add elegance.

Choose a fabric that suits your interior style — from rich velvets to natural linens.


6. Professional Measuring and Fitting

Due to the unique angles and stacking requirements of apex curtains, it’s highly recommended to:

  • Get a professional measure-up.
  • View fabric samples in your actual lighting.
  • Use an experienced installer for a flawless finish.

7. Pricing and Lead Times

Custom apex window solutions are typically more expensive due to:

  • Specialist measuring and manufacturing
  • More complex fitting
  • High-quality tracks and lining

Expect to budget anywhere from £1,500–£4,500 per apex window depending on size, fabric, and design.


8. Final Thoughts

Covering an apex window can transform your space — both aesthetically and functionally. Whether you want to soften the light, add drama, or simply gain privacy, a well-designed curtain or blind solution will enhance the beauty of your architectural feature while offering practicality.

If you’re ready to explore apex curtain options, get in touch with our expert team today for a free consultation and design advice.


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Furthermore, remember that the choice of hardware plays a significant role in the overall look of your curtains. Opting for decorative curtain rods or unique track systems can enhance the visual appeal, turning your window treatment into a feature rather than just a functional element. Consider materials such as wrought iron or polished wood for a classic touch, or sleek metal finishes for a modern vibe.

For those interested in DIY projects, creating your own apex window coverings can be a rewarding experience. You can source fabric that matches your decor and sew your own curtains to the precise measurements of your window. This not only saves costs but also allows for a personal touch that store-bought options often lack. Tutorials and online guides can provide step-by-step instructions to ensure a professional finish.

In summary, covering apex windows effectively combines functionality with style. The right curtains can transform these unique architectural elements into stunning focal points within your home, enhancing both aesthetics and comfort. As you embark on this decorating journey, keep in mind the importance of aligning your choices with your home’s overall design theme and your personal preferences.

Lastly, if you are contemplating on the best options for your apex window, don’t hesitate to consult with professionals who can offer tailored advice and solutions that meet your needs and budget.

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