UV resistant coating

UV resistant coating decreasing the effect of the rays

2 definitions of UV coating

UV coating can either refer to coatings which protect surfaces from ultra violet light by blocking it, or to coatings which cure under UV radiation. This article focuses on the first one; UV resistant coating.

Industrial UV resistant exterior paint

Ultra violet (UV) radiation is one of the main causes of fast deterioration of exterior paint. Constant exposure to UV light can lead to premature loss of colour and gloss as well as flaking and cracking of the coating. Therefore, nowadays, many exterior paints are UV protective as a standard. Also UV resistant clear coating is applicable as an additional protective layer on existing paint. These sprays are additionally, suitable for untreated surfaces when the natural look is wished to be retained.

UV protective paint protects surfaces in many industries including architecture and design, ship building, construction, and automotive industry.

These coatings have thus many industrial uses but they are also available for consumers for instance as exterior wall paints and vehicle refinishes.

UV resistant coating UK – applications

UV resistant coatings exist for many substrate materials; such as metal, wood, concrete and PVC. They are very common for example on cladding shop fronts and exterior walls of houses.

However, also cars have UV protective paint on them. The most common form of this coating is a UV resistant clear coat which is purely for protection. Nevertheless, also ordinary paints have UV protective properties and are thus available in a wide range of colours.  The coatings are available online and in many hardware shops in the UK.

UV blocking coating for metal surfaces

UV protective coatings are suitable for protecting metal surfaces and structures from the effects of sun light. They are applicable on painted metals such as sidings, doors, metal roofs and buildings. The coatings are especially common in sky scrapers and other high buildings. The UV resistant coatings are are also often applied in places which are difficult to reach and on decorative structures. Furthermore, these coatings are ideal for marine and offshore environments where the exposure to UV light greater than onshore.

Not only is UV resistant coating applicable on exterior surfaces, but it also meets the requirements of interior coatings. It is suitable especially for interior metals with decorative purposes. Such metals include for example aluminium, brass, bronze, zinc and silver.

Prevent discolouring of plastic with UV resistant paint

Plastic is very sensitive for heat and UV radiation, which is why UV protection is an essential property of plastic coatings on surfaces under influence of UV light. These plastic surfaces include for example  car exteriors.

The UV protective coatings for plastic usually consist of several layers. The first layer is a primer which guarantees adhesion of the base coat which applied on the primer, once it is dry. The job is finished by applying a clear top coat which contains UV stabilisors.

UV protection oil

Osmo wood oils are popular products to make wood UV resistant.

Protect wood from sun light

Also wooden surfaces need protection from UV radiation especially if outside. These surfaces include exterior walls, wood cladding, doors, window frames and garden furniture. Also wooden decking should have a protective layer which blocks UV light.

The UV protection coatings for wood are often varnishes or opaque finishes. In general, opaque paints offer better protection than the transparent alternatives due to the fact that they hide the surface. However, wood varnishes and oils are applicable when one wishes to retain the natural look of the wooden surface.


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