UVsuojitus

UVsuojitus refers to measures and properties that reduce exposure to ultraviolet radiation from the sun and other sources. It encompasses protective clothing and textiles, architectural glazing and coatings, and consumer products such as sunscreens. The aim is to limit skin damage, photoaging, and certain cancers, as well as to protect materials from UV-induced degradation.

In textiles, protection is quantified by the ultraviolet protection factor (UPF). Fabrics can carry UPF ratings such as 15, 20, 30, 40 or 50+. Higher UPF values indicate greater protection by blocking more UV radiation. Factors affecting UPF include fibre type, weave, colour, moisture, and fabric stretch. Many UV-protective garments are labeled with UPF and are designed to retain their protective properties after laundering, though durability varies by material and care.

Windows and coatings also use UV shielding. UV-blocking films and coatings on glass reduce UV transmission into interiors, helping protect furnishings, artwork and occupants, while typically preserving visible light transmission.

Sunscreens and UV filters are another aspect of UVsuojitus. Broad-spectrum products use chemical or mineral filters to absorb or reflect UVA and UVB radiation. They complement protective clothing and shade but do not eliminate the need for other forms of protection.

Standards and testing vary by region. Textile UPF labeling often follows international or regional standards such as those for UPF measurement and certification, while glass and film products are tested to region-specific requirements. Durability can decline with washing, wear, or environmental exposure, so ongoing protection depends on material quality and upkeep.

Overall, UVsuojitus is a multi-layered approach to reduce ultraviolet exposure through clothing, materials, and personal care, rather than a single solution.