A front side window must have an overall visible light transmission of at least 35%, and a windscreen at least 70%. The main part of a windscreen cannot be tinted at all — only a strip at the top within set dimensions. These are NZTA requirements and below them is a Warrant of Fitness failure.

The word that matters is overall. VLT is measured through the glass and the film together, not the film on its own. A 35% film on glass that is already tinted will not give you 35% overall.

The installer is legally responsible for making sure the finished VLT is compliant. We measure with a meter before and after, and we will not fit a film that puts your car outside the limit.

Usually not, and this is the most common misunderstanding we deal with. The 35% limit applies to the glass and film combined. Factory glass is rarely perfectly clear — it typically sits somewhere between 70% and 85% VLT — so a 35% film on top takes the overall figure well below the legal minimum.

To land on 35% overall, the film itself needs to be lighter than 35%. Exactly how much lighter depends on your specific glass, which is why it has to be measured rather than assumed.

We meter your windows before quoting and tell you the darkest film that keeps the car legal. Any tinter who quotes a film percentage without measuring your glass first is guessing.

It will if the overall VLT is under the limit — below 35% on a front side window or below 70% on a windscreen. Lighting and glazing faults are among the most common WoF failures in New Zealand, and inspectors do test tint with a meter.

If your car fails, the film has to come off before it will pass. You have 28 days to sort it and return for a free recheck at the same inspecting organisation.

Tint fitted by us is metered and documented, so it will not be the reason your car fails.

Often not. Japanese imports frequently arrive with factory or aftermarket tint around 24% VLT, which is legal in Japan but well under New Zealand's 35% limit for front side windows. Those cars fail compliance inspection or their next WoF until the film is removed.

It is worth checking before it becomes a problem. We can meter your windows and tell you where you stand in a few minutes.

If the tint is illegal, we remove it and can refit a compliant film at the same time, so you keep the look within the rules.

Yes. We remove old, bubbled, purpled or non-compliant film and clean off the adhesive residue underneath, which is the part that takes the time. Rear windows with demister elements need particular care, because careless removal damages the heating lines.

Removal is quoted per window and depends on the age of the film. Old film that has baked on for a decade is considerably more work than recent film.

Most people removing tint are doing it for compliance, and most want a legal film fitted straight afterwards. We handle both in one visit.

Car tinting at Mats Detailing starts from $160 for front side windows and $400 for a full vehicle, depending on vehicle size, the number of windows and the film grade. Residential and commercial tinting is quoted by square metre after a site visit.

Dyed film is the entry option — it darkens the glass and cuts glare but rejects relatively little heat and fades over time. Metallic film rejects more heat but can interfere with phone, GPS and radio signals. Ceramic film rejects the most heat without going darker and does not affect signals.

Ceramic is what we recommend for most people, and the reason is the New Zealand sun. Our UV levels are among the highest in the world, so heat rejection matters more here than the darkness of the film.

The practical upshot: a light ceramic film can keep a car cooler than a much darker dyed film, while staying comfortably legal. Darkness and heat rejection are not the same thing.

Yes, substantially, but it depends on the film. Quality film blocks up to 99% of UV and a large proportion of infrared, which is what you feel as heat. Darkness alone does not do this — a cheap dark film can block less heat than a quality light one.

In a Waikato summer the difference is most obvious in a parked car. Interiors get less hot, the air conditioning works less, and dashboards, leather and trim fade and crack far more slowly.

If heat is your main reason for tinting, ask about ceramic film specifically rather than choosing by percentage.

Quality film installed properly lasts many years, and premium films carry manufacturer warranties against bubbling, peeling, cracking and colour change. Cheap film is where the problems come from — purpling, bubbling and peeling within a few years are almost always signs of a low-grade product.

New Zealand's UV conditions are harder on film than most countries, which is why the grade matters more here than the price difference suggests.

We will tell you what warranty comes with the film you choose. If a quote does not name the film or its warranty, it is not comparable to one that does.

A full car is usually two to four hours depending on the number of windows and the complexity of the glass. Rear windscreens with heavy curvature take the longest, since the film has to be heat-shaped to fit.

Most cars are done in a single visit and you can collect the same day.

Do not wind the windows down for a few days afterwards while the film cures. We will tell you exactly how long when you collect.

A light haze or small water pockets in the first days are normal. Film is applied wet and the remaining moisture evaporates through it as it cures, which takes a few days in summer and longer in winter. It clears on its own.

What is not normal is bubbling that persists beyond a few weeks, bubbles with hard edges, or film lifting at the edges. Those are installation or product faults.

If anything still looks wrong after the cure period, bring it back. Film we fit is warranted and we will sort it.

Yes. Film goes over demister elements without affecting how they work. The care is needed on removal rather than installation — pulling old film off carelessly lifts the heating lines, and those are difficult and expensive to repair.

If your rear window already has film you want replaced, that is a removal job done carefully rather than quickly.

We will assess the existing film before quoting so there are no surprises.

Yes. We install architectural window film for homes and commercial buildings across Hamilton and the Waikato. These are different films from automotive tint, designed for building glass and specified for heat rejection, glare reduction, UV protection, privacy or safety depending on what the space needs.

The common reasons are a room that overheats in afternoon sun, glare on screens in an office, faded carpet and furniture, or privacy at ground level.

Residential and commercial work is quoted after a site visit, since glass type, orientation and area all affect the specification.

Not necessarily. Modern architectural films can reject a large amount of heat and almost all UV while staying close to clear. Darkening a room is a choice, not a requirement, and most residential installs are far lighter than people expect.

If privacy is the goal, that is a different film again — reflective or frosted options give privacy without losing much light.

We will bring samples and show you the options against your own glass before you commit.

It helps substantially. Quality film blocks up to 99% of UV, which is the main cause of fading in carpet, curtains, timber floors and furniture. It will not stop fading entirely, since visible light and heat also contribute, but it slows it dramatically.

North and west-facing rooms suffer most in New Zealand and benefit the most from film.

If you have just invested in flooring or furnishings, this is the cheapest protection available for them.