Effects of condensation on window film

This time of year, we get the odd call from people about their window tinting looking bad.
In most cases, we find that the scratch resistant coating is failing, due to condensation.

Window film is made of polyester with an adhesive coating on the glass side and a scratch resistant coating on the top side. This layer is very hard and has little flexibility.
After a few years of thermal cycling (hot-cold) the top coating can break down, especially if it is exposed to UV light.The coating is cracking into tiny little pieces and may show up as loss of optical clarity initially, then becoming almost opaque.
If you now add condensation into the equation, the whole thing happens much faster. The water soaks the weakened layer and when you wipe the glass it looks dirty.
There is nothing you can do to remedy the problem and the film needs to replaced. Unfortunately you cannot claim under warranty, as condensation is considered an environmental cause and excluded from liability of the film's manufacturer or agent.

This problem is not found with frosted film, used in wet areas, such as bathrooms. Frosted film can be effected with glue failure by condensation. This becomes evident, when it starts to shrink and develops wrinkles. We only use cast vinyl, to avoid these problems and you can be assured of the film lasting for many years without any problems.
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Who's clipping the ticket?

We use & promote Ecolux, an all-year Low-E window film to keep the heat in the home in winter, keep the heat out in summer and offer very good UV & fade protection.
The material is bought from our supplier and installed by us. No middle-man.

There are companies out there, promoting overall home insulation solutions. These may include under floor, wall, ceiling insulation, as well as double glazing or Low-E film. As it is a very popular topic these days to insulate, these companies are doing very well.
Are they experts with window film? Not for me to say, but I would suggest you ask them about their experience.
Are you getting a good deal cost wise? Would you be surprised to find out, that you are paying them a commission, increasing the cost to you by up to 50%?

Food for thought.....

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Creative with frosted film


When it comes to privacy film, we find the frosted solution most practical.
It allows plenty of light in and works extremely well both during the day and at night.

We use Avery Etched Glass for the bulk of our work, because it will not shrink back over time. There are a lot of cheaper products around, but we have learned our lesson over time.

Instead of having the complete glass covered, leave a small clear border, or even more elaborate, create a frame, like the picture on the right.
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Safety film in Schools

A few years ago, the NZ government got all schools to have their windows made safe, by retro-fitting safety film. The film chosen was 3M 7-mil. Why this film was chosen is questionable, as the "benefits" are surplus to requirements. A 4-mil film qualifies for human impact standards. 7-mil is more to deter forced entry. Anyway, taxpayers money wasted, as usual.
One of the problems using 7-mil film is that it has to be pre-cut and consequently you get bad fits. Not a problem, as the film is clear. It becomes a problem, if another, tinted film needs to be applied later. Not really recommended, but it happens.
Today, we had to remove some 3M-7mil clear safety film. The schools were sold the film's unique properties of not being able to be torn, a "smart" trick 3M uses to promote this film. However, the film we removed was not the one "sold" to them years ago, because it was as easy to tear as any safety film. Someone pulled a fast one?
I have visited numerous schools where this film was installed, and the quality of workmanship has mainly been shocking! Due to the fact that the installers were offered very little (we declined the work when asked) inexperienced sign-writers were installing this difficult film type, with the expected results.

My point: Bureaucrats get sucked in, we pay. Nothing new.

Coloured film

Did you know, we now stock just about the entire range of coloured films? You can choose from yellows, orange, reds, greens, blues, purple (yes, purple) and anything in between. These colours are designed to add a different look to shops, offices or even show cars. Want to know more?
Contact NZ Window Film Distribution for more info. Ph 080 484 684
Ph 0800 846 892
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