- 17 Dec 2025|
- News
When you’re managing tight schedules, client expectations and tight margins, the last thing you need is a trade roof lantern supplier who can’t deliver reliably. Builders across South Yorkshire tell us the same thing: consistency is the best decision they can make for smoother project management.
At Doncaster Trade Windows, we’ve spent more than a decade becoming a trusted partner for professionals who want predictable lead times, fast delivery and straightforward communication that keeps every flat roof extension or lantern installation running without delay.
We supply an extensive range of roof lanterns in a range of custom sizes and colours. Whether you’re installing a compact lantern over a dining room or pairing bifold doors with a larger lantern in the centre of a roof, we provide solutions known for good looks, thermal efficiency and dependable performance.
With competitive prices, quality-controlled fabrication and a service built around trade needs, we help make your build process a better place for you and your customers.
How we support builders with a reliable roof lantern supply in South Yorkshire
We understand how important a dependable supply is for trade professionals. Our process protects your programme from unnecessary delays.
Predictable supply that supports project timelines
Our in-house manufacturing and relationships with trusted suppliers ensure consistent stock levels for our lantern roof systems. You can rely on:
- Rooflight products are available with steady turnaround times
- Two-week lead times for most trade orders
- Competitive pricing that doesn’t fluctuate
- Clear technical guidance from our expert team
For many local builders, this reliability is one of the biggest benefits of roof lanterns purchased through a trusted local partner.
Free local delivery that fits your schedule
We provide free, reliable delivery in Doncaster within a 20-mile radius. Your products arrive:
- Packed securely to protect the safety glass and glazing
- On a confirmed day and time
- Ready for immediate installation
If you’re working on a live roof opening, this speed helps you avoid weather issues and get the structure watertight quickly.
Straightforward communication from start to finish
We focus on practical, honest communication. You’ll receive:
- Clear lead times
- Updates if anything changes
- Specification information when needed
This keeps you fully in control of your schedule.
Reliable quality through in-house fabrication
We manufacture our uPVC products using Eurocell profiles at our Doncaster facility. This gives you:
- Consistent quality
- Fast turnaround
- Technical accuracy
- Profile and colour matching for extension tie-ins
Builders often tell us this quality control is what keeps them choosing us as their best value lantern supplier for compatible systems.
Kit-form lanterns designed for quick, simple installation
Our roof lanterns are supplied in kit form with purpose-engineered components. Benefits include:
- Fast assembly on site
- Fixed 20° pitch
- Fewer complications
- Cleaner internal finishes for your customers
They are suitable for flat roofs, orangeries and modern living space upgrades requiring more natural light and natural daylight.
Dedicated trade counter support
Our trade counter provides:
- Technical advice
- Project-specific guidance
- Help with custom sizing
- Support with building regulations queries
You can also collect products directly if preferred.
Roof lanterns from Doncaster Trade Windows
Our roof lanterns combine modern design, strong structural performance and impressive thermal efficiency for homeowners wanting a comfortable living space all year round.
Specifications and performance
- Styles and sizes: From compact options to larger rectangular systems including 2-bar and 3-bar layouts
- Colours: Including anthracite grey, matt black, moondust grey, white and golden oak
- Thermal performance: U-values as low as 1.0 W/m²K through:
- Thermally broken ridge and ring beam
- Low E coatings
- Argon-filled glazing
- Solar control options
- Compatibility: Perfect for pairing with bifold doors to maximise natural light
- Durability: Engineered for structural strength in difficult weather
- Roof types: Suitable for flat roof extensions and orangeries
According to the Energy Saving Trust, improved insulation can cut heat loss by up to 20%, highlighting the demand for high-performing roof lights in today’s market.
Frequently asked questions
Can you provide custom sizes?
Yes, we can supply many custom dimensions. Speak to our team for project-specific requirements.
Do your lanterns suit flat roofs?
Yes, our systems are designed for flat roofs and flat roof extensions.
What glazing options are available?
We offer clear glass, blue tint, privacy glass and solar control glazing.
Do you match colours to existing frames?
We can match several Eurocell colours and recommend close RAL alternatives.
Do you provide installation support?
We offer technical advice at our trade counter and by phone.
How low-maintenance are your roof windows?
Our roof windows and flat roof lanterns offer easy maintenance, with durable finishes designed to resist staining, scratches and bird mess on busy sites.
Can I get thermal insulation details for your products?
Yes, we provide full details of thermal insulation and energy efficiency ratings for roof windows, flat roof lanterns, and korniche roof lanterns.
Do you supply comparable roof lantern products for builders?
Yes, our flat roof lanterns offer thermal insulation, easy installation, contemporary designs, flat glass options, and RAL colour specs to meet specific needs.
Who are Doncaster Trade Windows?
Since 2013 we’ve supported builders, installers and contractors across South Yorkshire with reliable supply, competitive trade pricing and in-house manufacturing. We produce uPVC windows and doors using Eurocell profiles and also supply roof lanterns, conservatories, aluminium systems, bifold doors and flat rooflights.
We hold Certass membership and offer:
- Two-week trade lead times
- Free delivery within 20 miles
- A year guarantee on hardware and longer warranties across frames and glazing
- A knowledgeable team ready to support technical queries
You’ll find us at Unit 2i, Lake Enterprise Park, Sandall Stones Road, Doncaster, DN3 1QR.
How to get in touch
If you’re a builder or contractor looking for a reliable roof lantern supplier, you can reach our team on 01302 891426 or email doncastertradewindows@live.co.uk. You can also send a message via our contact form for pricing, lead times or technical guidance.
