We install a lot of Velux and Velux-style roof windows, and while they're a genuinely good product for most applications, it's worth knowing the real trade-offs before committing.
Heat Gain in Summer
Roof windows can let in significant solar heat during summer months, particularly on south-facing roofs, without proper glazing specification or blinds to manage it.
Installation Quality Matters More Than With Wall Windows
A poorly installed roof window is a genuine leak risk in a way a badly fitted wall window isn't — the flashing detail is critical, which means installation quality matters more here than for most other window types.
Other Genuine Considerations
- Higher upfront cost than a comparable wall window of similar size
- Some models can be harder to reach for cleaning or operating without an extension pole
- Noise from rain can be more noticeable than with a wall-mounted window
- Not every roof or room layout is a good candidate — position matters
How to Avoid These Becoming Real Problems
- Choose the right glazing specification. To manage heat gain rather than leaving it unaddressed.
- Insist on proper flashing installation. Since this is what actually determines long-term leak risk, not the window itself.
- Consider blinds from the outset. Rather than as an afterthought once heat or glare becomes a problem.
- Get a proper survey before committing. To confirm the position and model genuinely suit your roof and room.
Weighing up whether a roof window is right for your space? We'll give you an honest assessment, not just a sales pitch.
View Velux Windows →Why Choose Atlas Roofing Cheshire
We're a domestic and commercial roofing team covering Cheshire and the Wirral, based near Chester, so we know the area and can get to you quickly. Every job comes with clear pricing before work starts and workmanship you can rely on.