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Roof window flashing

Roof windows are an aesthetic and practical addition to any home, allowing for plenty of natural light and ventilation in converted lofts and living spaces. Installing a window on your pitched or flat roof is only one step in a larger process, another part is installing a roof flashing. 

This element is an essential part of fitting roof windows into the roof structure The purpose of roof window flashings is to create a stable, reliable connection between the windows and the roof, protecting them from weather conditions, such as rain, wind, and snow. By choosing the correct flashing and adjusting it to the roofing material, you can have a watertight roof. You can do all that with our excellent selection of roof flashings and flashing kits. Sunlux provides options whether you have a tile, plain or slate roof.

There are 160 products.


  • Sunlux flashings

  • Optilight flashings

    A flashing is an essential element allowing correct installation of OptiLight roof window in the roof slope. The precisely designed systemic elements of the flashing enable tight and durable integration of the OptiLight window with roofing materials. It is very important as the main task of the flashing is to drain water and snow away from the Optilight window and protect it against the wind. The flashings are manufacture from aluminium sheet, coated with hard-wearing polyester lacquer.

  • Velux Window Flashings

    VELUX window flashing kit is a product that will integrate perfectly your roof window into the roofing material, making sure that your windows are sealed and weatherproof, whatever the conditions may be. No matter whether you opt for standard, recessed or combination installation of the VELUX window flashing, we will equip you with everything you need to achieve a precise, watertight finish. 

  • Fakro Flashings

  • Rooflite+ Flashings

    The Rooflite+ flashing kits are an all-in-one package that make installing a roof window straightforward. Compatible with all Rooflite+ roof windows and all common roofing materials, the flashing kits will help you properly install your windows while improving both the insulation and aesthetics of your roof.

    If you want an original flashing for a roof window from one of the biggest brands In Europe, you need to check out Rooflite+ flashings!


    Sunlux offers Rooflite+ installation flashing in Britain at affordable prices!

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Showing 1 - 24 of 160 items
Showing 1 - 24 of 160 items

Check Out Our Range of Flashings

Roof window flashing is available for both slate and tile roofs in a range of different sizes. It is crucial to choose the right size of a flashing kit to ensure a weather tight fit and correct installation. You should also be aware that the angle of your roof windows will impact the choice of proper flashing kits. Sunlux offers a range of flashing solutions that will fit any type of roof. We offer a range of high-quality flashings and flashing kits from all manufacturers that we currently supply roof windows for, which are all designed to integrate efficiently with different roofing materials and provide various options for installation height. Our flashings incorporated a polyester powder coated finish giving your roof windows enhanced protection from the weather and UV rays. No matter which roof windows you have, you can be sure that they’ll have a flashing to go with them.

Our Manufacturers Include:

Any questions regarding our flashings that we haven’t answered yet? Try clicking on the specific flashing kits from the list, and if you still need some more information, reach out to us directly. We are more than happy to help you find the best flashing that will suit your windows' needs.

What is flashing in roofing?

Flashing is a material used around roof windows, chimneys, or other protrusions to prevent water from seeping into the roof and causing damage.

Why is flashing important for roof windows?

Flashing ensures that the junction between the roof window and the roofing material is watertight, which prevents leaks and structural damage.

What materials are used for roof window flashings?

Flashings are usually made from metals like aluminum, copper, or zinc, or from weather-resistant synthetic materials.

Can I install flashings by myself?

While it is possible to install flashings yourself, it requires precision and knowledge of roofing techniques. It is often recommended to hire a professional to ensure a proper and safe installation.

How do I choose the right flashing for my roof window?

Choose flashing based on the type of roofing material you have and the slope of your roof. Manufacturers typically specify which flashing is suitable for different roof types and angles.

Are there different types of flashings for different roof materials?

Yes, there are specific types of flashings designed for tiles, slates, or flat roofing materials to ensure the best fit and waterproofing.

How long does flashing last?

The lifespan of flashing depends on the material used and environmental conditions, but metal flashings can last 20 to 30 years or more when properly installed and maintained.

What maintenance does flashing require?

Regular inspections to check for corrosion, lifting, or breaks in the seal are important. Any damaged flashing should be repaired or replaced promptly to avoid leaks.

How do I know if my flashing needs to be replaced?

Signs that your flashing may need to be replaced include visible rust or corrosion, cracks, leaks, or if the flashing has begun to lift or separate from the roof.

Can flashings be painted to match my roof?

Yes, metal flashings can be painted to match your roofing material. Ensure the paint is suitable for metal and weather-resistant.