Can You Replace Your Keylite Roof Window with a Velux?

Are you planning to replace a Keylite roof window with a Velux model? This is a question many homeowners ask when considering window upgrades or repairs. Keylite and Velux are respected brands in the roof window market, providing unmatched quality, durability, and advanced features. However, while these windows serve a similar purpose, they have different designs, sizing, and installation systems that are important to understand before making a switch. Please learn about the feasibility of replacing a Keylite roof window with a Velux:

Understanding Keylite and Velux Roof Windows

Keylite roof windows and Velux roof windows offer premium-quality solutions engineered perfectly to bring natural light and ventilation into lofts and roof spaces. Keylite provides easy installation with features like pre-fitted Flick-Fit brackets and integrated thermal collars. Their windows are suitable for a wide array of roof pitches (15°–90°) and roof types, including tiles, slate, and metal, ensuring that they fit many building styles.

Velux is a longstanding industry leader with an extensive product range, including manual, electric, and solar-powered windows, different glazing options, and smart integration capabilities. Velux roof windows come with a thorough installation system, including compatible flashing kits essential for waterproofing.

Can You Replace a Keylite Window With a Velux?

Technically, replacing a Keylite roof window with a Velux window is possible, which requires careful consideration.

Size and Dimensions – Both brands offer standard sizes that commonly overlap. But exact frame dimensions, sash sizes, and glazing thickness may differ slightly. If you want to avoid structural alterations or leaks, precise measurements of your existing Keylite window are necessary to choose the correct Velux replacement model.

Flashing Compatibility – Flashings are necessary for sealing roof windows against the weather. Velux windows depend on Velux-approved flashing kits with different profiles and designs from Keylite’s flashing systems. Existing Keylite flashings are not compatible with Velux windows; so a full flashing replacement with Velux brand parts can ensure a secure, watertight fit and maintain any manufacturer warranties.

Installation Systems – Keylite’s patent Flick-Fit installation system enables fast installation, but this system is not interchangeable with Velux’s mounting mechanisms. Professional installation can manage these differences safely and effectively.

Accessories and Controls – If your Keylite window includes electric or remote-controlled functions, Velux accessories and remotes will be incompatible. Upgrading to Velux means switching to Velux control systems for smooth operation.

What are the Advantages of Switching to Velux?

Switching to Velux windows offers several benefits:

Broader Product Range – Velux offers a comprehensive range of window types, sizes, finishes, and smart features, including solar-powered windows and integrated sensors.

Brand Recognition and Support – Velux is internationally recognised with extensive support networks, warranties, and well-established service ecosystems.

Energy Efficiency and Innovation – Velux often leads in energy-efficient glazing and ventilation technologies, which significantly contribute to a healthier home environment.

When is Replacement Essential?

Replacing a Keylite window with Velux may be advisable if your existing window is damaged, outdated, or incompatible with modern smart features you want to incorporate. If your Keylite window is working well and meets your needs, repairs or upgrading Keylite accessories may be more affordable. 

What are the Final Recommendations?

You should measure your existing Keylite window meticulously and consult Keylite and Velux product specifications.

You can expect to replace flashing kits as part of the Velux window installation.

You should use professional installers experienced with both Keylite and Velux systems to ensure proper fit and warranty protection.

You can compare product features and pricing to make an informed decision, balancing cost with desired benefits.

Bottom Line –

Replacing a Keylite roof window with Velux is a viable upgrade, which requires careful planning and expert installation to ensure success and long-term reliability. Both brands provide excellent quality, so your choice depends on your specific requirements, budget, and preferences for features. For more information about Velux window installation, please get in touch with Yorkshire Roof Windows at 07572 814560.