UV 5000 h Test
– proven resistance to extreme UV radiation
In modern energy-efficient construction, particularly in façade applications where materials are exposed to weather conditions over long periods, resistance to ultraviolet (UV) radiation is a key criterion for assessing the quality of construction products. One of the most rigorous and important tests in this field is the UV 5000 h test – an advanced ageing test simulating long-term exposure to sunlight.
What is the UV 5000 h test?
The UV 5000 h test is a laboratory ageing test used to assess the stability of a material when exposed to UV radiation. For 5,000 hours, the product is subjected to intensive radiation under conditions simulating actual sunlight exposure. This can correspond to many years of outdoor exposure under real-life conditions.
The test provides a precise assessment of how a material – such as a roof membrane or façade membrane – responds to:
- structural degradation,
- loss of flexibility and mechanical integrity,
- discolouration and colour changes,
- deterioration of mechanical properties.
Benefits of choosing a membrane tested for 5,000 hours of UV exposure
Proven material durability – even under intense sunlight. This is particularly important for open-joint ventilated façades, where the façade membrane remains partially exposed to UV radiation penetrating through the joints in the external cladding.
Greater flexibility during installation – allowing the installation of the façade cladding or roof covering to be postponed.
Compliance with technical requirements for modern open-joint façade systems. Independent laboratory testing confirms product quality and durability – particularly important for specialised projects, prefabricated construction and modern architecture.
Eurovent® products tested for 5,000 h UV exposure
Eurovent® products designed for applications with increased UV exposure that have successfully passed the UV 5000 h test include:
Eurovent® STRATOS – a highly vapour-permeable, two-layer roof membrane with a high fire performance classification of B-s1,d0.
Eurovent® FASSADE – a façade membrane with high UV resistance and a B-s1,d0 fire performance classification, designed for open-joint ventilated façade systems.
Eurovent® FASSADE X – a monolithic façade membrane with high UV resistance, designed for open-joint ventilated façade systems.
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