Cory's Car Care

It might sound surprising, but washing your car incorrectly is one of the most common causes of paintwork damage. Those fine swirl marks you can see in direct sunlight? The majority of them come from improper washing — the wrong products, the wrong technique or a trip through an automatic car wash.

The good news is that washing your car safely and effectively isn’t complicated once you know what to do. Here’s a straightforward guide to getting it right.

Why standard car washes damage your paint

Drive-through automatic car washes are incredibly convenient, but the brushes and rollers used in them are abrasive — particularly when they’ve been used on hundreds of vehicles and are full of trapped grit. Every pass of that brush across your paintwork introduces micro-scratches that build up over time into the swirl marks and dullness you see on most cars.

Even hand washing incorrectly causes damage. Using a dirty sponge, the wrong shampoo, or washing in direct sunlight are all common mistakes that take their toll on your clear coat over time.

What you need for a safe wash

You don’t need a huge amount of equipment to wash your car safely. The basics are:

Two buckets — one for your shampoo solution and one for clean rinsing water. A grit guard in the bottom of each bucket helps trap dirt away from your wash mitt.

A quality microfibre wash mitt — not a sponge. Sponges trap grit against the paint. A soft microfibre mitt lifts dirt away from the surface.

A pH-neutral car shampoo — avoid anything containing wax or harsh chemicals. For ceramic coated vehicles use a ceramic-safe shampoo specifically.

Microfibre drying towels — never let your car air dry as this causes water spots, especially in the North East where tap water is relatively hard.

A snow foam lance if possible — applying a thick layer of snow foam before contact washing helps loosen and lift surface dirt before you touch the paintwork, significantly reducing the risk of scratching.

The safe wash process step by step

Start by rinsing the car thoroughly with a hose or pressure washer to remove loose dirt and debris. Never rub a dry or dirty car.

Apply snow foam if you have it and allow it to dwell for a few minutes before rinsing. This is your pre-wash stage.

Fill your two buckets — shampoo in one, clean water in the other.

Wash the wheels first using a dedicated wheel brush and separate bucket. Wheels carry brake dust and heavy contamination that you do not want transferring to your paintwork.

Working from the top of the car down, wash one panel at a time using your microfibre mitt. After each panel, rinse the mitt thoroughly in your clean water bucket before reloading it with shampoo.

Rinse the car fully with clean water.

Dry immediately using a clean, plush microfibre drying towel. Pat or blot rather than dragging across the surface.

A few extra tips

Never wash your car in direct sunlight or when the surface is warm to the touch. Shampoo dries almost instantly on a hot surface and leaves water spots and residue that are difficult to remove.

Wash from the top down — the lower panels and sills are the dirtiest parts of the car and should always be done last.

Never use washing-up liquid. It strips any wax or sealant protection and can dry out rubber seals and trim over time.

If you have a ceramic coating, the process above protects it and maintains its performance. Avoid clay bars, cutting compounds or abrasive products on a coated vehicle.

When to call in a professional

Even with the best home washing technique, contaminants like iron fallout, tar and industrial deposits build up over time and can’t be removed by shampoo alone. A professional decontamination wash — which includes iron fallout remover, tar removal and clay bar treatment — should be done every few months to keep your paintwork truly clean.

At Cory’s Car Care we offer professional exterior details, full deep cleans and Maintenance Club memberships that keep your car in top condition all year round without you having to worry about it.

👉 Book online at coryscarcare.co.uk