Our Procedure

The first thing we’ll do upon your arrival is to give your vehicle an initial inspection and assessment while you are present (if we haven't seen the vehicle prior to drop off). We know it can be scary leaving your pride and joy with someone else! We will talk you through the process and explain exactly what we’ll be doing. We will also answer any questions that you may have. See FAQs.



To start with, we will wash the underside of your vehicle, blasting off dirt, loose rust and old flaking underseal at up to 3600 psi to get the underside as clean as possible.

Any plastic, wheel arch liners and undertrays are carefully removed prior to this to gain access behind these areas - which are often secretly harbouring months, if not years of mud and salt accumulation!


Once dry, following a 24 hour period or a dry off in our low bake spray oven, brakes and exhausts are carefully masked up along with the body of the vehicle to prevent any overspray. The underside and running gear are then cleaned up again and de-rusted manually using a wire wheel in the angle grinder, needle gun and various scrapers and sanders to remove as much rust as physically possible.

We then apply chemical rust converters where necessary, followed by anti-rust zinc rich primer.


When these are fully dry we then inject rust inhibiting cavity wax at high pressure into all the box sections and hollow sections underneath such as the sills, cross members, suspension arms, subframes and chassis rails etc.

This is usually followed by a light coating of rust inhibiting wax to exposed areas underneath.

Once this is dry, the final protective layer is applied - a thicker, thixotropic underbody coating or 'underseal' (usually black) is applied to the underside and running gear. This gives long term protection against rust and abrasion.


Any necessary interior trim is then carefully removed to gain access to any upper cavities and double skinned panels on the upper body of the vehicle. Rust inhibiting cavity wax is then applied at high pressure inside these box sections such as the door pillars, door frames, bonnet and boot etc.

We are able to get to most places on a car but very occasionally we need to drill small, discreet access holes to reach otherwise impossible places. These are then sealed with a small black, plastic plug to retain a standard appearance.

We will always check with you first before doing this.

The Result: A neat, weather proof 'factory look' finish.

How long will it take?

The process usually takes a 2-5 days depending on the size and condition of the vehicle. Older vehicles or vehicles in poor condition, the vehicles size and type will affect the preparation time required.

The preparation or clean up stage is probably the most important stage and is key to getting effective, lasting results. If you do not require a complete treatment and would just like your vehicles cavities injecting, this can be completed in a day. If you just require a partial treatment ie, just the underside treating or just the internal cavities treating please contact us to discuss your requirements.

The benefits of a complete rustproofing treatment include:

Peace of mind in the knowledge that your car is protected.

Helps to retain you cars highest possible resale value.

Reduced maintenance & repair bills.

Reduced road noise (‘drumming.’)

Rust Proofing FAQ

Why is rust a serious issue?

What Is Rust?

Why would I get my car rust-proofed?

Why is this important for classic cars?

How can I protect against rust?

Will the underseal you use dry out?

What happens if a cavity wax is done poorly?

Can I see an example?

Contact form

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