Window tints have three enemies.
The best way of looking after your window tints is by being aware of what causes the film to deterior in the first place.
Most films are made of a number of layers of polyester. From the glass, the first layer is the mounting adhesive. This layer may contain UV inhibitors, then is the first layer of film. Depending on the type and quality, the polyester is clear, dyed, metallised or ceramic coated. Very often there is also a UV inhibitor in this layer of film.
The next layer is a laminating adhesive. In some cases this glue may have UV inhibitor or dye added.
In the better quality films, there is another layer, and in some darker films even a third layer of polyester with the same additions.
The next layer is a laminating adhesive. In some cases this glue may have UV inhibitor or dye added.
In the better quality films, there is another layer, and in some darker films even a third layer of polyester with the same additions.
Now, the top layer is where it gets interesting. The Scratch Resistant (SR) layer is also called "hard coat". In it's very nature, the composition does not like too many ingredients, or it becomes less effective. So consequently, no UV inhibitor is added here. Some prestige films are adding heat absorbing dyes into this layer, with a direct loss of scratch resistance. None of Johnson Window Films contain any dye in this layer.
Now that you understand the film construction, the next step is to know the best way of looking after your tints:
1. Avoid exposure to the sun from the wrong side. A good example are French doors; left open in the direct sun, they will deteriorate after a few years. NZ's high levels of UV make sure of it.
2. Avoid ammonia. Do not use glass cleaners, unless they state on the label that they are safe on window films. Frequent cleaning with any of these products will break down the SR coating. The film develops a cloudy, milky look. The more you try to get rid of it, the more you remove the SR coating.
3. Avoid anything abrasive. Ordinary glass gets scratched, so guess what a plastic does? A lot of modern glass is heat treated, toughened or tempered. Great for added strengths, but more vulnerable to scratching.
We recommend the use of a good quality micro-fibre cloth as the best way of keeping your window films looking great for decades. You can also use a soft cloth with soapy water, such as dish washing liquid.
Call us on 0800 846 892 for a free consultation
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