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Lonsdale Roofing

Heritage Rooflights

Heritage Rooflights & Roof Lanterns

Lonsdale have provided heritage rooflights for some of the UKs most prestigious and eminent historic buildings, including Buckingham Palace, Windsor Castle, Admiralty Arch, The British & V&A Museums, St Pancras & Kings Cross Stations and Cliveden to name just a few.

Transform the space while preserving the building’s timeless allure with our heritage rooflights. Build upon the rich history of the building as you take it into the modern era, enhancing natural light, reducing energy consumption, and investing in sustainable materials. Our heritage rooflights elevate the living or working environment while protecting the building’s original character.

At Lonsdale, we have much experience dealing with listed buildings and English Heritage, helping with permissions and ensuring conformance with building regulations. Upgrade thermal performance and air-tightness with our bespoke heritage rooflights designed to suit any property, regardless of its age.

Ready to find out more how Lonsdale heritage rooflights can benefit your project? Contact our knowledgeable team today to embark on your journey to cost-effective and traditional rooflights.

Benefits of Heritage Rooflights:

Historic Character

Heritage rooflights have evolved from original glass structures from the Victorian era. Designed to keep the character of the building, heritage rooflights help conserve the property. Crafted from modern aluminium extrusions with high performance gaskets, they provide contemporary performance whilst maintaining the integrity of the building.

Natural Light

Continue to allow natural light to enter the building and reduce the use of artificial light and energy costs. Modern solar control and insulating units are available to improve thermal performance of heritage rooflights and traditional patent glazing systems are available for canopies or green houses and overhead glazing of unheated spaces. Other glass types can reduce solar UV helping to preserve valuable artefacts or furnishings in rooms below.


Different types of ventilators can be incorporated in either the upstands of heritage roof lanterns or the sloped areas of heritage rooflights. Various opening mechanisms can be specified including traditional pole or cord operated manual gears to modern thermostatically controlled electronic actuators, including remote and ‘smart’ operation.


Lonsdale are manufacturers only, so installation is carried out by a national network of registered contractors. Many of these are experienced at providing heritage rooflights on historic buildings and homes offering a high degree of professionalism and the extra finesse required to ensure a first class finished job.

How to Order

Contact Our Team

Complete our enquiry form with project details, such as building specs, heritage rooflight preferences (colour, glazing, material, insulation), deadline, and budget. We’ll promptly reach out to discuss in further detail.

Receive Your Quote

Your quote will include cost breakdown, estimated project time, and warranty info. We’re committed to your satisfaction and can make changes as needed.

Place an Order

When you’re ready, we’ll process your order and keep you informed of progress. Expect your custom-made heritage rooflights ready for installation in 4 to 8 weeks.

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  • SkyGard Traditional Patent Glazing Bars

    Call 0208 801 4221 For a Competitive Quote

    SkyGard is a traditional inverted ‘T’ bar design ideal for unheated spaces such as canopies, walkways, verandas, greenhouses and rail platforms. Continuous snap in aluminium pressure beads replace the lead wings most common on heritage glazing bars used in the first half of the 20th century providing improved weathering and longevity whilst maintaining a traditional appearance. SkyGard has been approved by English Heritage many times for important buildings such as Cliveden, Marble Arch, Buckingham Palace, Waterloo Station and St James’s Palace.

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  • ThermGard Heritage Glazing Bars For Double Glazing

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    A neat 40mm wide box bar design, ThermGard provides modern weathering performance whilst maintaining a slim-line heritage style appearance. Various slim-line box rafters are available to suit small or large spans. Alternatively, the carrier rail may be mounted on top of continuous timber rafters – see our ThermGard-R glazing bars. A continuous screw on pressure plate with gaskets provides outstanding glass retention and a choice of decorative external covers are available to provide a timber moulding style appearance for heritage rooflights, roof lanterns or skylights. ThermGard heritage glazing bars feature on many historic buildings including The British Museum, Buckingham Palace, Windsor Castle and The V&A Museum.

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  • Heritage Glazing Bars For Glass & Timber Rafters

    Call 0208 801 4221 For a Competitive Quote

    ThermGard-R 40mm wide aluminium glazing bars for timber rafters provide the ideal combination of modern weather=proofing and low maintenance together with a traditional timber appearance internally for heritage rooflights, skylights and roof lanterns. Suitable for single or double glazing ThermGard-R features continuous drainage channels, gaskets and pressure plate to ensure maximum weather-tightness. A robust glass stop prevents class slippage a feature all too often missing on lower quality rafter glazing bar systems from others. A choice of external decorative cover caps provide the opportunity to ‘mimic’ traditional timber glazing bars and maintain a traditional appearance.

    Important building featuring TherGard-R Heirtage Rooflights are Holyrood Palace, The Royal Opera House, National Gallery and Clarence House.

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  • SpanGard Traditional Roof Lanterns For Heritage Buildings

    Call 0208 801 4221 For a Competitive Quote

    SpanGard self-supporting aluminium roof lanterns and skylights are manufactured from the ThermGard patent glazing system providing excellent thermal performance. Each rooflight is pre-built in our factory and fully fabricated ready for immediate installation on site. The integrated aluminium cill, ridge, hip & eaves members enables roof pitches from 15° to 45° and in some instances beyond, subject to overall width dimensions. Standard flashings are aluminium, but traditional timber roll and lead flashed ridge and hips can be incorporated to achieve a traditional appearance for heritage roof lanterns. Building featuring heritage rooflights are The British Museum, Windsor Castle, Buckingham Palace, 10 Downing Street and The V&A Museum.

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“When it came to a rooflight for my own studio, Lonsdale proved the obvious choice” Sir Terry Farrell, Terry Farrell & Partners