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Paint Decontamination: The Essential Checklist

Most car owners make this harder than it needs to be. Here's the straightforward approach that actually works—no fluff, no upselling.

Is your paint feeling rough like sandpaper even after a wash? This checklist covers everything you need to strip away iron fallout, sap, and that stubborn red dust before you wax or polish.

D"M
Dave "Davo" Mitchell Off-Road & 4WD Specialist
| Updated: 2 March 2026
Paint Decontamination: The Essential Checklist

Aussie Conditions

Australian conditions are tougher than most—intense UV, red dust, coastal salt, and 40°C summers. European car care advice often doesn't cut it here.
Quick Summary

Look, if you've been driving through the outback or parking under gum trees, a standard wash just isn't going to cut it. After 15 years in the trade, I've seen too many blokes try to polish over grit and end up scratching their clear coat to bits. This guide is for anyone who wants that glass-smooth finish without the headache. We're going to tackle iron particles, organic gunk, and that pesky salt spray if you're living near the coast.

01

A Quick Word from the Garage

I learned the hard way on a black Commodore years ago: never, ever skip the iron remover. I thought a clay bar alone was enough, but I ended up dragging metal shards across the paint. Not a good look. Nowadays, I reckon the 'chemical first' approach is the only way to go, especially with the brutal UV we get here in March. If the paint is hot to the touch, don't even start, you'll just bake the chemicals on.
02

Gear You'll Need

What You'll Need

0/8
Iron Remover (pH neutral) — My go-to is Bowden's Own Wheely Clean or Gtechniq W6. It'll turn purple when it hits the iron.
Clay Bar or Clay Mitt — A fine grade clay bar is safest. Clay mitts are faster for daily drivers.
Clay Lubricant — Don't use just water. Use a dedicated lube or a very slick soapy mix.
Bug & Tar Remover — Essential for bat droppings and those dried-on summer locusts.
Two Buckets & Grit Guards — Standard safe wash setup to avoid swirling the paint.
High-quality Microfibre Towels — At least 4-5 clean ones. If you drop one on the garage floor, chuck it in the wash.
Pressure Washer or Hose — High pressure helps blast out red dust from the crevices.
Isopropyl Alcohol (IPA) Wipe — To strip any leftover oils before you apply your final protection.
03

Pre-Start Checklist

What You'll Need

0/4
Surface Temperature — Is the bonnet cool? If it's over 30 degrees, head inside and grab a cold one until the arvo.
Shade Check — Are you out of direct sunlight? Working in the sun is a recipe for chemical staining.
Plastic Trim Check — Some iron removers hate raw plastic. Keep a damp cloth handy to wipe spills.
The 'Baggy Test' — Put your hand in a plastic sandwich bag and run it over the clean paint. If it feels bumpy, you need this guide.
04

The Decon Process

Tap each step to mark complete
01

Thorough Wash

Give the car a proper two-bucket wash. You want to remove all the loose dirt and coastal salt before touching the paint with chemicals.

02

Chemical Iron Removal

Spray the iron remover on dry paint. Let it dwell for 3-5 minutes (don't let it dry!). Watch it turn purple, then rinse thoroughly.

03

Tar and Sap Spot Clean

Use your tar remover on any black spots or sticky sap. This is common after parking under gum trees. Wipe gently with a microfibre.

04

Mechanical Claying

Work in small sections (50x50cm). Use plenty of lube and glide the clay over the paint with zero pressure until the 'grabbing' sound stops.

05

Final Rinse and Dry

Rinse the whole car again to remove clay residue. Dry it off with a clean, plush towel or a dedicated car blower.

06

Panel Wipe

Mist the IPA solution and wipe down to ensure the paint is 'squeaky' clean. This is the secret to getting wax or coatings to bond.

05

Final Inspection Checklist

What You'll Need

0/3
Smoothness Check — Repeat the baggy test. It should feel like glass now. No dramas.
Glass and Trim — Check for any white residue left in the gaps or on the rubber seals.
Visual Clarity — Look at the paint under a torch. You're looking for any remaining 'haze' or missed spots.

Watch Out

Never use a clay bar if you've dropped it, it'll pick up grit from the floor and ruin your paint. Also, be careful with bat droppings; they are highly acidic. If they've etched the paint, claying won't fix it, you'll need a light polish.
06

Wrapping Up

Anyway, once you've ticked all these off, your paint is ready for whatever protection you like. Personally, I reckon a good ceramic sealant is the go for the Aussie climate, but a quality wax still looks mint on a weekend warrior. Give it a crack and you'll see the difference. Cheers!

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