VELUX Roof Window Guides & Expert Help

Practical VELUX Advice from a Trusted UK Supplier

Choosing the right VELUX roof window can feel overwhelming – sizes, glazing, flashings, blinds, installation costs and planning rules all play a part. That’s why Condell has created a dedicated series of VELUX guides to help you make confident, informed decisions at every stage of your project.

As an established UK supplier of VELUX roof windows, flashings and accessories, we work with builders, developers, self-builders and homeowners nationwide. Our guides are written to be clear, practical and project-focused – not just technical.

Plan Your VELUX Project from Start to Finish

Whether you’re refreshing an existing loft window or designing a brand new extension, our VELUX Help & Advice hub covers:

Choosing products: Window types, finishes, glazing, blinds and accessories.
Technical decisions: Sizes, roof pitch, flashings and roof build-ups.
On-site considerations: Installation costs, condensation, ventilation and maintenance.
Compliance & planning: Basic guidance on planning permission and building regulations.

Each guide is designed to answer the questions we hear every day from customers – and to give you a clear next step, whether that’s speaking to our team, visiting a branch or ordering online.

How to Use These Guides

You can dip into a single guide for a quick answer, or work through several if you’re planning a full loft conversion or extension. A typical journey might look like:

Start with the Buying Guide to understand the main choices.
Use the Size & Code Guide and Roof Pitch Guide to confirm what will fit.
Choose performance with the Glazing and Blinds & Shading guides.
Check details using the Flashing, Warm vs Cold Roof and Planning & Building Regs guides.
Come back to the Maintenance, Condensation and Replacement guides once the window is installed.

Below, you’ll find quick links to each guide. Click through to read more about the topic that best matches where you are in your project.

Ready to Talk VELUX?

If you’d like help choosing the right combination of VELUX windows, flashings and accessories, our team is here to help. We can work from drawings, measurements or a simple outline of what you’re trying to achieve.

Order online, visit a branch or contact us for tailored VELUX advice.