Your Lumen Rooflight Guarantee

The moment they leave our factory

Your rooflights are covered by our guarantee from the day they leave our factory. No complicated registration forms to complete or any need to upload several invoices. The Lumen guarantee is simple to understand and sets out the guarantee period for various components and parts used on your Lumen rooflight.


Whilst the guarantee is there to provide assurances that your product will last, you do have a responsibility to look after the product during the guarantee period to ensure that the cover remains in place. You will need to maintain and care for your rooflights, regardless of their location, as per the requirements set out below and as shown in the ‘Lumen Rooflight Guarantee’ document at the foot of this page.


You will have been provided with your guarantee folder at the point of invoice and this contains many of the documents listed on our website. If for any reason you have not received this folder or have lost it please contact us for a replacement, as not having the information cannot be not a valid reason for failure to care for and maintain your rooflights.


Our standard paint finish is for a C3 environment which is the normal urban/industrial location with moderate SO2 levels. If your property is located in an industrial or coastal location with SO2 levels exceeding 30mg/m3 then we can supply an uprated paint finish for a C4 environment.

Cleaning & MaintenanceCleaning & Maintenance

Please note that the uprated C4 paint application will still require regular maintenance. Whilst the paint finish offer a more hardy life, it is used in a more aggressive environment and must be cared for.


The frequency of cleaning depends in part on the standard of appearance that is required and also the requirement to remove deposits that are likely, during prolonged contact with either the powder or the metal, cause damage. In rural or normal environments the period between cleaning can be extended to up to 12 months however, if heavy soiling occurs more regular cleaning is required. For coastal or industrial areas with humid and aggressive atmospheres the cleaning schedule should be reduced to 3 monthly.

A Simple Regular Clean

It is a common misconception that because rooflights are fitted high into a roof space that they don’t have to be cleaned or maintained. Whilst Lumen rooflights are supplied with Pilkington Activ or Saint Gobain BioClean self-clean glass, the frames and rubbers need to be looked after. This is particularly important for the steel framed rooflights.

Steel frame rooflights are typically protected by a powder coat paint finish, whereas the Accoya rooflights use a wet spray application. In either case the paint coating stops corrosive debris and moisture reaching the frame material and in the case of steel rooflights, prevents it from rusting.

Over time and with exposure to the elements, powder coatings may show signs of weathering such as loss of colour or chalking. A simple regular clean will minimise the effects of weathering and will remove dirt, grime and other build-up detrimental to all coatings.

Best Method

The best method of cleaning is by regular washing of the coating using a solution of warm water and non-abrasive, pH neutral detergent solution. Surfaces should be thoroughly rinsed after cleaning to remove all residues. All surfaces should be cleaned using a soft cloth or sponge or nothing harsher than a soft natural bristle brush. If the project is subject to any hazardous unusual environmental factors, or is close to salt water, an estuary or marine environments then please make this known prior to placing an order.


If for any reason you are unable to clean or maintain your rooflight to the required standard then you should consider upgrading to 316 stainless steel as this will provide a significantly longer life should the paint deteriorate.

Failure to adhere to regular cleaning and maintenance will result in the deterioration of the protective paint coating and in the case of the steel rooflights, will lead to the frames rusting. This in turn will invalidate sections of your guarantee.

It is essential that you care for your rooflight to maximise the lifespan of the product. Maintaining the good looks of your paint coating is just like caring for your car and is a smart way to protect your investment.

Essential Documents

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Lumen Rooflight 3 RMD Business Units, Holsworthy Industrial Estate Holsworthy EX22 6HL United Kingdom Tel: 0330 300 1090 Tel: 01409 255120  Email
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