Key Product Features
Originally used across orangeries and conservatories, the Ultrasky, Sheerline and Korniche roof lanterns we install are a beautiful addition to add elegance and light to any property. With a wide range of set sizes or made to measure, you can customise our lantern windows to be added to existing flat roofs or onto new extensions.
Enhancing the property with home market appeal and thermal performance, the high performance glass has been tested to withstand high wind speeds, meet the needs of your home based on property orientation and meet PAS 24 accreditation for years to come. Pre manufactured from design to be less disruptive during building, you can experience uninterrupted views and increased lighting in the room.
Being suitable for extensions, refurbishments and new builds, you can include our roof lanterns in a project or refresh your home with this easy addition. Our lantern windows can consist of electrically powered side windows or thermostatically controlled roof vents for increased ventilation.
With the choice of uPVC or aluminium cladding, tinted and glass designs with slim lines can be used for further light efficiency and improved skylines. The seamless joints and hidden fixings are perfect for homes looking to add one of the strongest and stiffest roof lanterns on the market. To see the multiple configurations for our conservatory range, view our product gallery.
Our roof lanterns are made with high performance glass. This glass allows you to experience excellent thermal performance and energy efficiency. If your home is north or east facing, you can expect it to be chillier as it gets less light. Whereas, if your home is south or west facing, you will find they overheat due to the sunlight they get. For us to properly optimise your new roof lanterns, please specify the type of glass you need in conjunction with the orientation of your home.VISIT OUR GALLERY
Stunning Roof Lanterns
Roof lanterns often feature a two-tier roof on different levels, creating a ‘wedding-cake’ effect. The two levels can be separated by a row of windows that is highly stylish and makes this style ideal for period properties of Victorian and Edwardian vintage, They can be added to existing flat roofs or incorporated in to a new extension. Todays modern lanterns are often selected without additional windows.
Which lantern roof you decide upon, the overall impression is of height, light and grandeur. A lantern conservatory roof is spacious and offers an uninterrupted view of the sky. With a two-tiered roofing structure, you get to use more windows, which means that more ventilation is available. We also offer a range of electrically powered opening side windows and roof vents, that can be thermostatically controlled. If you’ve been looking for high specification roof lanterns like ours, start your quote today!START YOUR QUOTE
Roof Lantern Prices Andover & Hampshire
Our quotation engine can price our roof lanterns by size and style. Manufactured to improve the light and space efficiency of a room, our lantern windows can be installed into existing or new conservatory roofs in the Andover and Hampshire areas.
With options to customise our lantern windows, you can find a specification which meets your project taste and needs. Alternatively, if you have any questions regarding design and customisability, please use our contact form, and we will be happy to assist you as soon as possible.
Frequently Asked Questions
How thermally efficient are roof lanterns?
Built to fit both double or triple glazing, our roof lanterns can be customised to improve the energy ratings of your home in the Andover and Hampshire areas. At standard, our lantern windows can reach ‘C’ energy ratings; however, this can be improved with triple glazing.
How strong are roof lanterns?
Our roof lanterns are durable and secure with our materials and installation processes. Tested to withstand wind speeds and local snow loading, our roof lanterns have been built to last for peace of mind and comfort in your home even at standard. With excellent manufacturing, our lantern windows provide robust performance for generations.
How are roof lanterns maintained?
At KJM, we offer self-cleaning glass options such as Pilkington Activ™. The first stage of the cleaning process is ‘photocatalytic’. The coating reacts with daylight to break down organic dirt. The second stage is ‘hydrophilic’ to stop the formation of droplets. Instead, rainwater hits the glass and spreads evenly, running off in a ‘sheet’ like way and taking the loosened dirt with it. Alternatively, wipe the roof lantern with a damp cloth occasionally for incredibly low maintenance
What is the maximum size for roof lantern installation?
A common misconception is that large lanterns are required to get the most light and create a bright and airy room below. A 1 metre x 1 metre lantern can let in a surprising amount of sunlight. Modern double or triple glazed units are far better at insulating than glass units from the past, so ensure you specify wisely. Generally speaking, architects would advise that the overall glazing area in any extension should cover around 15-20% of the overall floor space. This of course is elevation and shading dependent.
Are roof lanterns Building Regulations compliant?
Our roof lanterns can be Building Regulation compliant dependent on size and glass U-values. For example, with lanterns larger in width than 1000mm, the glass must provide U-values of 1.2 W/m2K. To find out if your lantern window is building regulation compliant, contact us using the contact form today.
How easy are roof lanterns to install?
Most roof lanterns assemble together relatively easily, however we would recommend it is left to the experts to install. As an example self-cleaning glass coatings can be damaged by using the incorrect sealant. In most cases an architect or structural engineer will be required to do the calculations. Larger openings will probably require steel work to be fitted to the existing roof. If you are starting from scratch with an extension this process should all be organised through the builder and architect before you start.