How to Choose Flat Roof Windows

How to Choose Flat Roof Windows

Flat roof windows are a stylish and functional addition to a space. They enhance natural lighting, ventilation, and the aesthetics of a room. 

Types of Flat Roof Windows 

There are two main types of flat roof windows: fixed flat windows and ventilated flat windows, each offering different benefits and functionalities in terms of ventilation, natural light, and design. 

  • Fixed Flat Roof Windows: These roof windows are stationary and cannot be opened or closed. Designed for spaces where ventilation is not a priority, they are perfect for providing a consistent source of natural light and offering an unobstructed view of the sky. 
  • Ventilated Flat Roof Windows: These roof windows are designed to be opened and closed, providing both natural light and ventilation. They are great for spaces that require proper airflow and come with various opening mechanisms, such as manual, electric, or solar-powered options. 


Finishes and Glazing for Flat Roof Windows 

Flat roof windows can also be differentiated by the type of finishes and glazing they have. 

Frame Finishes 

Flat roof windows are available in different frame finishes to suit various décor styles. Most popular options include white-painted wood, PVC, and aluminium. It is important to consider the aesthetic appeal and durability of the frame material when making your choice. 

White-painted wood offers a timeless aesthetic, bringing a natural elegance to the room. The durability of these flat roof window frames is due to the combination of wood’s inherent strength and a protective paint layer. While they offer exceptional durability, it is important to ensure regular maintenance by repainting and sealing to help prelong the life of the frame. 

PVC frame finish are engineered to resist moisture, UV rays, and extreme temperatures, making them highly durable. Thanks to these inherent properties, they are suitable for various environments, including those with high humidity and coastal exposure. PVC flat roof window frames do not warp, crack, or corrode, offering homeowners a low maintenance solution. 

Aluminium frame finishes excel in both longevity and aesthetic and require minimal maintenance. Aluminium’s lightweight yet sturdy properties make it easy to work with during installation and adds a contemporary touch to the design. It is naturally resistant to corrosion, making it ideal for areas with high moisture and exposure to harsh weather conditions. 

Different frame finishes have their unique blend of durability and often times the choice comes down to aesthetic preferences. 

Glazing Options 

Glazing refers to the glass used in the window. There are various options available, each offering different benefits: 

  • Single Glazing: Basic glass option, providing limited insulation and noise reduction. 
  • Double Glazing: Consists of two layers of glass with an air gap in between, offering improved insulation and noise reduction. 
  • Triple Glazing: Offers the highest level of insulation and noise reduction, making it suitable for energy-efficient homes. 


Room Considerations 

Another important aspect to consider when choosing a flat roof window is, of course, the room’s functionality and shape. 


If you’re thinking of incorporating flat roof windows into your kitchen area it is recommended to consider a ventilated flat roof windows to help eliminate cooking odors and provide adequate ventilation. You can opt for an easy-to-clean finish that withstands moisture and grease. 

Living Room 

Adding flat roof windows is a great way to enhance natural light in the living room. Whether fixed or ventilated, a large flat roof window will bring in ample daylight and create a comfortable, inviting atmosphere. 

Home Office 

Transform your home office into a more productive space by choosing a ventilated flat roof window that improves air flow and lighting conditions. This will allow fresh air and natural light to create a comfortable work environment. 


You can brighten your bathroom space without compromising privacy. Opt for a ventilated flat roof window with frosted or privacy glazing, and a PVC frame to handle the humid conditions. 


For the bedroom, we recommend a ventilated flat roof window with blackout blinds. This will allow you to control light and create an optimal sleeping environment. 

Budget Considerations 

The cost of flat roof windows is determined by factors such as size, glazing options, and features. While investing in quality windows is important, remember that choosing energy-efficient options can help you save on heating and cooling costs in the long run. 

Installation and Professional Help 

Installing a flat roof window requires expertise to ensure proper sealing, insulation, and structural integrity. As such, it's recommended to hire an accredited roof window installer to ensure proper installation and avoid leaks, drafts, and other potential issues. 

Trusted Partners 

At Condell, we work in close partnership with Velux, a trusted brand in the roof windows industry. They offer a wide range of high-quality flat roof windows and accessories.  

Choosing the right flat roof window for your home renovation project is an exciting step towards enhancing natural light, ventilation, and overall aesthetics. Make sure you consider different types of windows, finishes, and room specifics to make an informed decision that adds value and comfort to your living spaces. 

Check out our full range of Velux Flat Roof Windows here.