When I first managed a villa project, the biggest challenge was finding a roof window supplier who could deliver on time and at the right quality. Delays cost money, and guests notice small problems right away.
That is why I started comparing different companies in the UK, looking for the best options for larger projects.
This review is built on actual experience as a buyer. I have worked with suppliers, handled installation issues, and seen how different brands perform in real settings.
Here, you will find a breakdown of the top 6 roof window manufacturers UK companies can count on. Each section shows what they offer and where they stand out.
If you are searching for reliable suppliers, you are in the right place.
So let’s begin!
Quick Comparison Chart
Roof windows are important for light, ventilation, and comfort in buildings. The right manufacturer helps businesses avoid problems and save costs over time.
| Manufacturer | Product Range | Price Level | Quality | Availability | Innovation | Best For |
| Velux | Wide | High | High | Excellent | Strong | Premium projects |
| Fakro | Wide | Medium | High | Good | Strong | Energy-efficient builds |
| Keylite | Medium | Medium | Good | Good | Strong | Easy installation |
| RoofLITE+ | Narrow | Low | Good | Good | Basic | Budget builds |
| Dakea | Medium | Low-Medium | Good | Fair | Fair | Small-scale projects |
| Whitesales | Medium | Medium | Good | Moderate | Fair | Commercial buildings |
Read more to see which brand matches your project needs and budget most effectively.
1. Velux
Location: Glenrothes, Fife, Scotland
Velux is one of the most recognized roof window names in the UK. Founded in 1941, the company has grown into a trusted global supplier. Their UK office opened in 1979 and has been serving builders, architects, and property owners ever since.
I’ve seen many hotels, villas, and homes choose Velux because of its reliability. You can walk into almost any merchant in the UK and find their products on the shelf. That kind of reach matters when your project has deadlines and you cannot afford delays.
For me, Velux stands out because of their technical support and wide product range. If you need detailed specifications, certifications, or guidance, they have a dedicated team ready to help.
Product Range
Core Roof Windows
- Centre-Pivot Models: Easy to operate and widely used in pitched roofs across both homes and larger projects.
- Top-Hung Models: Provide better outward views and extra headroom, ideal for guest rooms and attic conversions.
Flat Roof Solutions
- Fixed Windows: Designed for areas where additional light is needed but ventilation is not required.
- Opening Options: Solar or electric models bring natural air circulation into flat-roof spaces without manual effort.
Blinds and Shutters
- Internal Blinds: Available in multiple colors and fabrics, offering control over both daylight and privacy.
- External Shutters: Reduce heat during warmer months and add another layer of weather protection.
Special Designs
- Balcony Windows: Open outward to form a small standing balcony, transforming upper-floor rooms.
- Conservation Windows: Maintain the historic look of older buildings while still delivering modern performance.
Research & Development (R&D)
- In-House R&D: Velux designs and tests new products in their own facilities, giving them full control of quality.
- Testing Procedures: Products go through strict air, water, and wind resistance checks to meet safety standards.
- Adaptability to Trends: Regular updates reflect energy performance goals and design needs for modern projects.
- Sustainability Focus: Wood comes from certified sources, and new materials reduce environmental impact.
Packaging & Labeling Services
Velux uses branded packaging made in-house, so products arrive ready for immediate identification and installation.
They are moving toward recyclable, single-material packaging by 2030, reducing plastic waste. This approach benefits businesses managing larger volumes of waste.
All labels include compliance markings and product details, giving your team the right information during handling and installation.
Supply Chain & Logistics
- Certified Sourcing: Timber is supplied from FSC or PEFC-certified forests for dependable procurement.
- Distribution Network: Stocked in merchants across the UK, so supply delays are minimal.
- International Delivery: Global footprint allows Velux to support projects beyond the UK.
- Local Support: UK-based staff handle warranties, technical guidance, and delivery scheduling.
Takeaway Note
Velux is the right partner if you need wide availability, strong technical support, and a product range that covers both pitched and flat roofs. This makes them an excellent choice for hotels, villas, and large residential builds.
However, while the quality and reach are strong advantages, the higher price may feel restrictive if your project is driven mainly by budget.
2. Fakro
Location: Swadlincote, Derbyshire, UK
Fakro is one of the largest roof window manufacturers in the world. The company started in Poland in 1991 and quickly expanded into international markets. Their UK office opened in 2000, giving local builders and property owners direct access to their products and support.
I’ve noticed that many developers and hotel owners choose Fakro because the brand balances affordability with a wide product range. They are known for energy-efficient windows and solutions that fit both modern and heritage projects. For you, this means having more flexibility when planning builds with different requirements.
Product Range
Core Roof Windows
- Centre-Pivot Models: Standard roof windows that offer durability and reliable ventilation, commonly specified in residential and commercial builds.
- Top-Hung Models: Open outward to improve space and views, often used in guest rooms or loft conversions.
Flat Roof Windows
- Fixed Models: Provide extra daylight for flat-roofed rooms without the need for ventilation.
- Opening Models: Electric or manual designs allow air flow while keeping a modern look.
Accessories
- Internal Blinds: Available in multiple fabrics and finishes to manage light and privacy.
- External Awnings: Reduce heat gain and provide shading during summer months.
Special Features
- Smoke Ventilation Windows: Designed to meet fire safety requirements in commercial and residential projects.
- Conservation Windows: Blend into heritage properties while delivering modern insulation and performance.
Research & Development (R&D)
- In-House Development: Fakro invests heavily in its own design and engineering teams to create and refine new products.
- Testing Procedures: Windows undergo durability and weather-resistance checks to meet European and UK standards.
- Adaptability to Market: Offers energy-efficient designs and solutions that meet changing building codes.
- Sustainability Focus: Uses certified timber and promotes responsible material sourcing.
Packaging & Labeling Services
Fakro products are packaged with clear branding to make them easy to identify on-site. Each box comes with installation and compliance information, keeping your team informed.
The company also aligns with industry sustainability practices, sourcing eco-friendly wood and focusing on materials that support responsible construction. Their packaging supports the same values.
This makes handling, storage, and compliance easier for larger projects that involve multiple shipments and installations.
Supply Chain & Logistics
- Certified Sourcing: Timber and materials are sourced from FSC or PEFC-certified forests.
- UK Presence: Office and warehouse in Derbyshire ensure faster delivery within the UK.
- Distribution Network: Products are available through a wide range of UK merchants.
- Export Support: Global operations allow Fakro to handle projects across Europe and beyond.
Takeaway Note
Fakro is a strong choice if you want an affordable alternative that still delivers variety and energy-efficient options. Their wide range works well for hotels, villas, and residential builds that need both standard and specialized solutions.
At the same time, while they offer good support, their UK distribution is not as extensive as Velux, so availability may be more limited in certain areas.
3. Keylite
Location: Cookstown, Northern Ireland, and South Derbyshire, England
Keylite is part of the Keystone Group and has been producing roof windows since 2001. With operations in both Northern Ireland and England, the company has built a strong reputation for innovation and installer-friendly features.
I’ve worked with builders who prefer Keylite because their windows save time on-site. For you, that means less labour cost and fewer complications during installation. They focus heavily on practical design choices, which makes them appealing to contractors managing multiple projects at once.
Product Range
Core Roof Windows
- Centre-Pivot Windows: Popular models designed for everyday use in residential and commercial buildings.
- Top-Hung Windows: Ideal for attic conversions, providing more headroom and wider views.
Special Performance Windows
- Fire Escape Windows: Built to meet building regulations for emergency exits in lofts and other upper rooms.
- Conservation Windows: Styled to suit heritage buildings while still offering modern insulation.
Flat Roof Systems
- Roof Lanterns: Create bright, open interiors with sleek glass structures.
- Flat Roof Windows: Provide daylight and ventilation for single-storey spaces.
Accessories and Innovations
- Thermal Collar: Expanding insulation built in at no extra cost to reduce heat loss.
- Flick-Fit Brackets: Quick-fit system that cuts installation time and reduces mistakes.
Research & Development (R&D)
- In-House R&D: Keylite develops its own technology, including patented thermal collars and fitting systems.
- Testing Procedures: Products are tested for weather resistance and energy efficiency before market release.
- Market Adaptability: Responds quickly with both timber and PVC models to meet varied project needs.
- Innovation Process: Focused on simplifying installation and improving thermal performance.
Packaging & Labeling Services
Keylite supplies products in branded boxes with clear product details. Each package includes instructions and regulatory documentation for easy reference on-site.
The company sources FSC-certified timber, and packaging aligns with their sustainability standards. This matters if your business must meet environmental targets or manage waste responsibly.
Their labeling is straightforward, reducing confusion when multiple sizes or models arrive at a project site.
Supply Chain & Logistics
- Certified Sourcing: Uses FSC-certified timber for all wooden windows.
- Distribution Network: Strong UK and Ireland coverage through builders’ merchants.
- Shipping Options: Merchant deliveries with support for housebuilders and contractors.
- Local Support: UK-based technical team answers installation and specification questions quickly.
Takeaway Note
Keylite is best for businesses that value faster installations, built-in thermal features, and strong UK merchant support. These strengths make them practical for both residential and commercial builds. However, while their innovations help save time, their overall product range is smaller than Velux or Fakro. This could be a limitation if your project demands more specialized window types.
4. RoofLITE+
Location: Distributed in the UK through roofing merchants and suppliers
RoofLITE+ is part of the Altaterra group, which also owns Velux and Dakea. The brand was created to serve the budget segment while still delivering reliable quality.
I’ve seen many property owners and builders use RoofLITE+ when projects require dependable windows at lower cost. For you, this option is practical if you’re balancing budgets but still want products backed by a large group with decades of expertise.
Product Range
Core Roof Windows
- Centre-Pivot Models: Designed for standard pitched roofs, easy to operate, and available in common UK sizes.
- Top-Hung Models: Provide more headroom and natural views, suitable for loft conversions.
Value Lines
- Solid Series: Focused on strength and long life, without unnecessary extras.
- Trio Series: Triple-glazed models offering better insulation for colder climates or higher energy standards.
Accessories
- Blinds: Standard designs available to match window models.
- Flashings: Kits supplied to guarantee watertight installation in different roof types.
Special Designs
- Slim Series: Features thinner frames for a more modern look.
- Conservation Options: Suitable for heritage-style projects needing discreet designs.
Research & Development (R&D)
- Group-Backed R&D: Product design and testing are managed within the Altaterra and VKR Group facilities.
- Testing Procedures: Products go through weather, durability, and safety checks before launch.
- Adaptability to Market: Range adjusted to cover standard UK roof sizes and basic project requirements.
- Innovation Approach: Simplifies features to keep products affordable while meeting safety and energy codes.
Packaging & Labeling Services
RoofLITE+ products arrive in branded packaging, with clear labels for model and size. Each box includes installation instructions and compliance details.
Packaging follows group sustainability policies, with a gradual move toward recyclable materials and reduced plastic. This reduces waste and helps you meet environmental standards.
Because packaging is standardized, it’s straightforward for your team to sort and identify deliveries across multiple projects.
Supply Chain & Logistics
- Sourcing: Timber sourced under FSC and PEFC certification through the VKR group.
- Distribution: Products sold through UK merchants and online distributors.
- Shipping Options: Merchant networks allow nationwide delivery and site drop-offs.
- International Reach: Parent group supports exports across Europe and other regions.
Takeaway Note
RoofLITE+ is best for projects where cost control is a top priority but reliable performance is still required. Their range is simple, consistent, and backed by the same group as Velux. However, because the brand focuses on affordability, it does not offer the advanced features or premium finishes available from higher-end lines.
5. Dakea
Location: Malom köz. 1., HU-9431 Fertőd, Hungary
Dakea was launched in 2012 by Altaterra, the same group that manages RoofLITE+ and Velux. It was created to serve professional builders with durable products and long guarantees.
I’ve seen contractors choose Dakea because they know the brand is backed by a large group but priced for trade projects. For you, this means getting professional-grade products without paying top-market prices. Their focus on the trade segment makes them especially appealing for multi-property builds or developments.
Product Range
Core Roof Windows
- Timber Windows: Durable pine designs for pitched roofs, available in multiple standard sizes.
- PVC Windows: Low-maintenance models suited for humid rooms like kitchens and bathrooms.
Special Performance Lines
- Better and Safe Series: Popular ranges designed with extra insulation and enhanced safety glazing.
- Smoke Vent Windows: Meet safety requirements in multi-level buildings and commercial projects.
Accessories
- Flashings: Watertight kits for different roof types and pitches.
- Blinds: Standard blinds to fit each model, providing basic light and privacy control.
Special Designs
- Conservation Options: Roof windows designed to fit heritage or traditional-style properties.
- Flat Roof Skylights: Solutions for single-storey and commercial spaces needing extra daylight.
Research & Development (R&D)
- In-House Development: Designs created under Altaterra’s engineering teams, ensuring group-level quality.
- Testing Procedures: Products checked for weather resistance, durability, and safety before release.
- Adaptability to Market: Models align with common UK sizes to make sourcing easier for builders.
- Innovation Approach: Emphasis on practical features and extended guarantees for trade customers.
Packaging & Labeling Services
Dakea products come in branded boxes that are easy to identify. Each package includes installation instructions, model information, and compliance documents.
Packaging reflects the group’s sustainability practices, with increased use of recyclable materials. This helps reduce waste on job sites and supports eco-conscious procurement policies.
Clear labeling keeps orders simple, especially when large projects involve multiple window types.
Supply Chain & Logistics
- Sourcing: Uses FSC and PEFC-certified wood sourced within the VKR group.
- Distribution Network: Products available through nationwide merchants across the UK.
- Shipping Options: Merchant partners offer site delivery, often with short lead times for standard models.
- Support Services: UK-based team helps with warranties, delivery questions, and technical queries.
Takeaway Note
Dakea is best for builders and developers who want trade-focused pricing, solid guarantees, and straightforward availability. Their products are reliable for large housing runs, hotels, or multi-property projects.
owever, while they cover the main product needs, their range is more limited compared to Velux or Fakro, which may matter if you require advanced features or custom designs.
6. Whitesales
Location: Cranleigh, Surrey, UK
Whitesales has been supplying daylighting products for over 30 years and is now a well-known name in the UK flat-roof market. Unlike other brands on this list, Whitesales focuses on rooflights, domes, and lanterns rather than pitched roof windows.
I’ve seen hotels, villas, and commercial buildings use their flat-glass solutions to brighten larger interior spaces. For you, Whitesales can be a partner when you want UK-made products with short lead times and reliable technical support.
Product Range
Flat Glass Rooflights
- em.glaze Series: Sleek, flat-glass rooflights with clean finishes that fit modern architectural projects.
- Linked Panels: Multi-pane options for covering larger spaces with natural light.
Domes and Tubes
- em.dome Range: Polycarbonate domes for durability and high light transmission.
- em.tube Systems: Sun tubes designed to bring daylight into interior spaces without direct roof windows.
Roof Lanterns
- Lantern Models: Glass lanterns for flat roofs, creating open and bright interiors.
- Heritage Options: Traditional styling available for period buildings or sensitive projects.
Accessories and Add-Ons
- Smoke Vent Options: Meet building safety regulations for commercial and multi-level structures.
- Upstands: Available in insulated and non-insulated designs to match window types.
Research & Development (R&D)
- In-House Development: Whitesales designs and tests its own flat-roof products in the UK.
- Testing Procedures: Rooflights go through CWCT protocols for air, water, and wind resistance.
- Adaptability to Market: Offers both modern glass systems and traditional dome products.
- Innovation Focus: Specializes in non-fragility and impact-tested solutions for safe installation.
Packaging & Labeling Services
Whitesales manages its own packaging, with each product labeled clearly for compliance and installation. Technical data sheets and CE markings are included with deliveries.
Packaging emphasizes safety and handling on-site, supporting contractors managing larger or more complex projects. Their focus on compliance also makes it easier for you to pass inspections without delays.
Supply Chain & Logistics
- Sourcing: UK-based production and assembly for many product ranges.
- Distribution Network: Nationwide delivery, with many rooflights available from stock.
- Shipping Options: Next-day and 3–5 day services available for standard items.
- Customer Support: Local technical team provides advice on specifications and installation details.
Takeaway Note
Whitesales is best if your project involves flat-roof windows, lanterns, or domes that need quick UK delivery. Their products are ideal for hotels, villas, and commercial spaces requiring more daylight. On the other hand, because their focus is only on flat-roof systems, they do not cover pitched roof projects, which may limit their use in mixed developments.
Having Trouble Sourcing Roof Window Manufacturers in the UK?
Finding the right roof window manufacturer in the UK can sometimes feel overwhelming. I know how much time you spend comparing suppliers, balancing budgets, and worrying about lead times. It’s frustrating when you need consistent quality but also want fair pricing and dependable support.
That’s why many business owners are now looking beyond the UK. China has become a strong option for sourcing roof windows, with Vallisco standing out as a trusted partner.
Why Vallisco is Worth Considering:
- Proven Expertise: Vallisco has years of experience producing doors and windows for global markets with consistent results.
- Quality Standards: Products meet international certifications, giving you peace of mind when supplying to demanding residential and commercial projects.
- Custom Solutions: Ability to adapt specifications for villas, hotels, or greenhouses without losing reliability or performance.
- Global Logistics: Strong export network ensures timely shipping and smooth delivery across Europe and Southeast Asia.
If you’ve been struggling with UK options, I suggest you explore Vallisco. They combine quality with scale, making them a practical choice for your next project.
Conclusion
When I first faced supplier delays on my villa project, I knew the choice of roof window manufacturer mattered.
In this article, you’ve seen the top 6 UK companies, their strengths, and their limits. Now you’re ready to make a clear decision for your project.
Still, if UK options feel too restrictive, remember there are global partners too. Vallisco in China offers quality, scale, and flexible supply for builders like you.
Don’t let sourcing hold back your project. Contact us today!
