Most maintenance advice gives you a schedule. Decontaminate in March and September, wash fortnightly, done.
We would rather not, because it depends entirely on where your car lives.
A garaged car belonging to someone retired, driven twice a week, has almost nothing in common with a work ute parked outside under a cherry tree in Stoke. Same coating, same city, completely different maintenance needs. Any schedule that fits both is fitting neither.
So instead, here is what Nelson actually throws at paint through the year, and how to work out what that means for your car.
What lands on your paint here
Spring brings bee droppings, which are acidic and considerably more stubborn than people expect. Cherry blossom comes down too.
Summer brings bird droppings and the strongest UV of the year. Both do damage fast in the heat. This is also when the blossom has become fruit, birds eat the fruit, and seeds end up on everything parked underneath.
Autumn brings leaf fall and the tannins that come with it, which stain if left sitting on a panel in the wet.
Winter brings road grime, which holds moisture against the paint, and the stormy weather that carries coastal salt about.
Salt is the one people overestimate. Most of Nelson is coastal and Rocks Road, which runs along the waterfront, takes the brunt of it, but it matters mainly in stormy weather and it is a short stretch of road. Nelson is not a place where the roads get salted in winter, so the overseas advice about that does not transfer. On a calm day it is barely worth thinking about.
And behind all of it, UV. That is the one you cannot see working, and it is the one doing the most damage.
The UV problem
Drive along Rocks Road and look at the older red cars. Chalky across the roof and the top of the bonnet, some of them peeling.
Most of those owners washed their cars regularly. That is Nelson sun working on the panels that face straight up at it, over years, on clear coat that eventually ran out of UV absorbers.
A coating acts as a sacrificial UV layer over the clear coat, which is a large part of why it is worth having here specifically rather than as a general nicety. Our new car article explains why that clear coat has a half-life and why protecting it early costs less.
Working out your own schedule
Rather than a calendar, four questions:
Where does it park?
Garaged, carport, or outside. Under trees or in the open. Near the coast or inland. This single factor changes maintenance needs more than anything else, and it is why a universal schedule cannot work.
How much does it drive, and where?
A car parked near the water, or one that spends time along the waterfront, picks up more salt than one kept inland. Open road driving adds stone strike and road film that town driving does not.
What is actually landing on it?
Look at the car rather than the calendar. If you are finding bee droppings in October and bird droppings in January, that is your schedule telling you what it needs and when.
How is the washing going?
If cleaning the car has become noticeably harder work than it used to be, the surface has clogged and needs decontaminating. That is the signal to act on, whatever month it is.
The one job worth doing here
Decontamination.
Over time the surface picks up bonded contamination that a normal wash will not shift. Iron particles, salt residue, tar, tree matter. It builds up in the surface and progressively blocks what the coating is doing.
Heavy seasonal tree matter is what drives it here more than anything, which makes decontamination the highest-value maintenance job locally.
Important: flat beading almost never means the coating has failed. The bond is permanent. A decontamination wash usually brings most of the performance back for a fraction of the cost of recoating. There is more on diagnosing that in our maintenance guide.
What still matters more than the weather
Washing.
Nelson is hard on paint and there is no point pretending otherwise. But the ranking does not change: a carefully washed car in Nelson will outperform a badly washed car somewhere gentler.
The weather sets the difficulty. The washing sets the outcome.
The method matters more than the products, and it is covered properly in our washing guide. The short version for local conditions:
- Rinse salt off after a stormy stretch, particularly if the car lives near the water
- Deal with droppings and sap quickly, since they etch faster in summer heat
- Do not wash on a schedule. Every wash is contact, and contact is what causes swirl marks
- Dry it. Tap water left to evaporate is what leaves spots, not rain
Seasonal quick reference
| Season | What lands on the paint | What to prioritise |
|---|---|---|
| Spring | Bee droppings, cherry blossom | Prompt removal, they are acidic and stubborn |
| Summer | Bird droppings, peak UV, fruit and seeds | Fast removal, shade where possible |
| Autumn | Leaf fall, tannins, fruit | Do not let wet leaves sit on panels |
| Winter | Road grime, and salt if it has been stormy | Rinse more often, especially after bad weather |
None of that is a schedule. It is a list of what to look for.
Realistic expectations
3-5 years from our White coating and 7-9 years from Black, both longer with sensible care, in Nelson conditions.
Those numbers already assume local conditions rather than ideal ones. What moves them either way is not the weather, it is what happens at the bucket.
"This is Nelson and I get a lot of sand & salt on the car not to mention the intense sun. Very happy with the results. In fact his coating will probably outlast the mechanics & electronics on my car."
— Andrew Smith
Getting it checked
No annual inspection is required for any warranty, and we do not charge for one.
It is worth doing anyway. It is usually where we find that a decontamination wash would bring a coating back that the owner had assumed was finished, and that conversation is free.
We are mobile, so it happens at your address.
If you have not had a coating done yet, our ceramic coating service covers what is involved, and the pricing calculator will give you a number for your vehicle.
Not sure what your car actually needs?
Tell us where it parks and how it gets used. That answers the maintenance question better than any calendar.
What happens next: Free consultation → Transparent estimate → Professional application → Follow-up care