Best Velux Windows for Loft Conversions
Picking the right windows? Honestly, it's one of those decisions that can make or break a loft conversion. Velux is pretty much the gold standard for roof windows — everyone knows the name. They've got a bunch of styles and features all aimed at letting in as much light as possible, getting some air flowing, and keeping your energy bills in check. So let's figure out which ones actually work for your project, covering the key models, sizes, and what you need to think about during installation.
What is the Best Velux Window for a Loft Conversion?
For a standard loft conversion, you're really looking at two main contenders: the Velux GGL (Center-Pivot) or the Velux GGU (Top-Hung). Most people go for the GGL — it's cheaper, easier to fit, and does the job fine. But here's the thing: if you want to stand right in front of the open window, maybe stick your head out or get a proper view, the GGU wins hands down. No obstruction, way easier to clean too.
Key Velux Models for Loft Conversions
- Velux GGL (Center-Pivot): The classic, budget-friendly choice. The sash pivots right in the middle, so you can clean both sides from inside your room without any acrobatics.
- Velux GGU (Top-Hung): Opens wider — up to 45 degrees — and has this built-in ventilation flap. Means you can get fresh air even when the window's shut. Great if the window sits low or you just want that more open vibe.
- Velux CFP (Centre-Pivot with Comfort Panel): The fancy option. Comes with an integrated blind and a decorative cover panel that hides the frame. Looks seamless, like it was always meant to be there.
- Velux Vario: Solar-powered skylights for weird roof shapes. Honestly, not what you'd usually go for in a standard loft conversion.
What Size Velux Window is Best for a Loft Conversion?
The size depends on your roof space and how much light you're after. General rule? Your glazed area should be at least 10-15% of the floor area. For a typical loft bedroom, two windows sized CK04 (780mm x 1180mm) or CK06 (780mm x 1400mm) usually do the trick.
| Window Size Code | Dimensions (Width x Height) | Best Use Case |
|---|---|---|
| CK02 | 550mm x 780mm | Small bathrooms or hallways |
| CK04 | 780mm x 1180mm | Standard bedrooms or living areas |
| CK06 | 780mm x 1400mm | Larger rooms, maximizing light |
| FK06 | 940mm x 1400mm | Wide rooms, panoramic views |
| PK08 | 1140mm x 1400mm | Very large spaces, open-plan lofts |
Don't forget building regs — they usually require a minimum escape window size. That's typically 0.33m² with at least 450mm height and width. Check with your architect or installer, seriously.
Should I Choose Electric or Manual Velux Windows?
For lofts, electric windows are a no-brainer if they're out of reach. Manual ones are fine if you can actually get to them, but electric gives you convenience and you can hook them up to smart home systems. Velux's "INTEGRA" range — solar or mains powered — even has rain sensors, so they'll close automatically when it starts pouring. Pretty slick.
What is the Difference Between a Velux Window and a Roof Window?
Yeah, "Velux" is a brand, but people use it like it's the actual thing — you know, like Hoover for vacuum cleaners. But not all roof windows are Velux. The real difference? Quality and warranty. Velux windows are precision-engineered, double-glazed with low-E glass, and built to keep the weather out. They give you a 10-year guarantee on the window and installation kit, which beats most budget options hands down. If you're adding value to your home with a loft conversion, Velux is the safe bet.
Checklist for Choosing Velux Windows for a Loft Conversion
- Measure your rafters: Make sure the window fits between them without needing major structural work.
- Check the pitch of your roof: Velux works on pitches from 15° to 90°. The GGL/GU are best between 20° and 85°.
- Consider the room's purpose: Bedroom? Go for blackout blinds. Living space? Maybe solar-control glass.
- Plan for ventilation: The GGU's ventilation flap is brilliant for bathrooms or kitchens.
- Think about access: High windows? Electric operation is practically mandatory.
Frequently Asked Questions
Can you put Velux windows in any loft?
Pretty much, yeah — as long as your roof is pitched. But the structure needs to handle the window, and the pitch has to be between 15° and 90°. Get a structural survey done before installation, just to be safe.
Do I need planning permission for Velux windows in a loft conversion?
Usually not — they fall under Permitted Development as long as they don't stick out more than 150mm from the roof plane. But if you're in a conservation area or your property's listed, you'll probably need permission. Always check with your local planning authority first.
How much does a Velux window cost for a loft conversion?
Depends on size and model. A standard GGL CK04 runs about £300-£500, while a bigger GGU FK06 can be £600-£900. Installation adds another £300-£500 per window. Electric versions (INTEGRA) are typically £200-£400 more per window.
Are Velux windows energy efficient?
Yeah, modern ones are pretty good. They've got low-E double glazing, argon gas filling, and a thermal break in the frame. The U-value is around 1.3 W/m²K, which meets or beats building regs for loft conversions.
Resumen breve
- El modelo más recomendado: El Velux GGL (center-pivot) es el más popular por su relación calidad-precio, mientras que el GGU (top-hung) es mejor para vistas despejadas.
- Tamaño óptimo: Para una habitación estándar, dos ventanas CK04 (780x1180mm) o CK06 (780x1400mm) son ideales para cumplir con los requisitos de luz natural.
- Eléctricas vs. Manuales: Las ventanas eléctricas (INTEGRA) son muy recomendables para buhardillas con techos altos o difícil acceso, y ofrecen sensores de lluvia.
- Sin permiso de obras: En la mayoría de los casos, las ventanas Velux entran dentro de los derechos de desarrollo permitido, pero verifique con su ayuntamiento si está en una zona protegida.
