Anodised aluminium used in architecture requires very little maintenance. The anodising layer consists of metal, aluminium oxide and is hard and robust. Maintenance is therefore understood to mean: cleaning of the product. A clean anodised aluminium surface has a very long lifespan. Under normal conditions, it can easily last 80 years, without losing its gloss or colour (e.g. the electrolytically dyed layers).

Cleaning instructions


Download the STABU specification for anodisation of aluminium curtain wall / windows & doors / façade cladding. Can’t find what you’re looking for? Call us +31 (0) 76-5043130 or send an e-mail to


20 or 40 year guarantee

Alumet B.V. hereby declares that the anodising activities that it has performed meet the QUALANOD requirements, class 20 mu or 25 mu, which Alumet B.V. and the client had agreed upon in writing. This means that the anodised components will be free of any corrosion and will not contain any cracks, blisters or filiform corrosion. Corrosion on the unprotected and untreated cut will not affect the adjacent anodising layers. The natural and electrolytically coloured components will also not be subject to any discolouration when exposed to sunlight.

Guarantee 20 yearsGuarantee 40 years


BS3987 is the British Standard for color (where applicable), film thickness, sealing and damage for clear and colored anodizing layers. Alumet is affiliated with BSI.

BS certificate


Qualanod is the quality label for anodising aluminum. It is an international quality label based on an extensive specification for both process and product requirements. Alumet is affiliated with Qualanod.

Qualanod certificate

ISO Certificate

Both Alumet’s quality management and environmental system are ISO certified. Our quality system meets the standards of ISO 9001:2015. Our environmental quality system meets the standards of ISO 14001:2015.

ISO 9001 certificateISO 14001 certificate

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