Posted By aidy best I think it goes without saying that Hi vis is reflective clothing which is enhanced in poor light, even when grubby. I certainly wouldnt like to be under the scrutiny of the HSE trying to justify a white boiler suit as hi vis if an accident were to happen Over to you

Posted By George Wedgwood Typical problem in some 'dirty' workplaces! My firm's environment is often similar and we have a policy to wear 'hi-viz' at all times whilst on site (outside of the offices). Most of the workers get soiled on a regular basis and workwear is replaced periodically but the most important thing is the reflective strips on the garments - these give the 'high viz' effect even when partly soiled. Daylight luminosity is mostly provided by the orange or yellow colour and must be reasonably clean to work. This is difficult for vehicle and plant fitters, for example, who regualrly get greasy oily jobs to do. We are looking at better materials for them to wear and flammability id also a problem - greasy polycotton or whole polyester, is highly flammable and should not be worn by such workers. garments should be kept as clean as possible so a laundering contract with a specialist is a must - unless you want to replace regularly!