Acrylic Window Tinting
Most caravan and motorhome double-glazed acrylic windows are constructed using a light grey tint. Older models may have a light bronze tint however bronze tint was found to fade given prolonged exposure to UV in sunlight. For this reason caravan and motorhome builders stopped fitting bronze tint in 2005, and this coincided with Polyplastic stopping the manufacture of bronze tint acrylic. As bronze tint is no longer offered as a replacement option, it does create a colour match problem in older models fitted with bronze tint, particularly when it replacing a caravan front window which is part of a 3-window set.
Film Tinting Acrylic Double-Glazed Windows
Tinted film, that is used to tint car and van glass windows, is formulated to be applied to glass. Glass window tinted film is not suitable to be used on double-glazed acrylic windows fitted to caravans and motorhomes and is likely, within weeks, to lead to bubbles forming between the film and the acrylic. It is also very difficult to remove the tinted film once it is stuck to acrylic and could easily lead to scratching the acrylic surface.
Dark Tint Acrylic ‘Privacy Tint’
Double-glazed acrylic windows are also available in very dark black acrylic tint that has a very low light transmission; this is often referred to as privacy tint. Privacy tinted windows are fitted as standard to certain caravans and it is an option on some caravans and motorhomes.
The darker the tint the more heat is absorbed by the acrylic. In certain countries that experience very high summer temperatures, e.g. Australia, Polyplastic strongly advise that privacy tinted acrylic windows are not fitted. After prolonged exposure to direct sunlight privacy tint will reach a very high temperature and there is a serious risk that the acrylic will soften and could permanently deform the window shape, adversely affecting the seal of the window on the rubber weather surround on the vehicle body resulting in the window needing replacing. While acrylic softens at higher temperatures, it does not actually melt until it reaches 320 °F (160 °C).
Window Stickers and Cling Film
Some owners proudly display an assortment of badges and window stickers as a record of where they have visited. However, stickers on acrylic double-glazed can cause the window to craze or crack. Different plastics can react with each other and, over time, can cause acrylic windows to craze or crack. The process is slow but neither of these faults can be repaired.
Some owners also apply cling film to their windows to protect them from dirt during storage or damage during travelling. Cling film can also cause the window to craze and crack.