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Using Lanoguard on Very Rusty Vehicles

Is your vehicle underbody absolutely rotten beyond belief? All may not be lost. Lanoguard offers a very easy and effective way of caring for and protecting vehicles – and it’s a product which is very low-prep tolerant and happy to be applied over sound surface rust. Read on for some tips and tricks for salvaging and protecting a rusty chassis with Lanoguard’s Underbody Care Range.



Lanoguard works by providing a complete hermetic seal on the surface, which displaces moisture and oxygen – the two components required for the rusting process to occur. Lanoguard can’t trap moisture, and due to its self-healing properties will not crack or dry out.

Sound and stable surface rust is absolutely fine to be Lanoguarded, just make sure any loose or flaking bits of laminating rust, paint or other coatings are removed. This is because if they do fall off, Lanoguard and the protection it provides, can come off with them. A close-up jet wash is ideal. If you struggle to remove all the loose bits on a very badly rusted underbody, our two-step application may be a good move for you too – see below!



As part of the hermetic sealing process, Lanoguard bonds to the surface it sits on and over time will seep underneath surface rust and push the worst of the oxidation off. It won’t remove rust per se, but it will improve the surface and make it more stable. If you are struggling to remove loose bits of rust, we can recommend our two-step application process:

  1. Spray the whole underbody
  2. Leave it for two months to “seep” underneath and push off the worst of the oxidation
  3. Give it a close-up jet wash and repeat as normal with a regular Lanoguard treatment

Lanoguard is only as good as the surface it’s sprayed onto – so this process works to make the rusty surface less loose, less flaky, and more stable. Be assured Lanoguard is absolutely fine on a rusty chassis and infact could even be said to work better when applied to surface rust as the small pits in the rust give more overall surface area for Lanoguard to bond and bind to.



Whilst we find there is no need to convert rust, you can do so if you wish. Rust converters work to reduce rust and make the surface more stable, so they can give a better surface for Lanoguard to be sprayed on to. Typically though, you may find that surfaces being rust-converted will require more preparation, and the process overall adds complication to the job which somewhat removes the easy factor of Lanoguard.

The jury is out on this one, we find some of our users opt to use converters with heavily rusted vehicles, but it certainly isn’t mandatory. It’s more of a personal choice as to how much preparation you’d like to do to get the surface ready for Lanoguarding. Our two-step process takes advantage of the features of Lanoguard to help prepare that surface a bit more should you so wish, too.

Any questions at all on the state of your vehicle, or for any assistance – you can of course always get in touch, send us images of your vehicle and we’ll be happy to help guide you with what to do! Get in touch on +44 (0) 330 100 1959 or



A few simple things to note when Lanoguarding a very rusty chassis:

  • Remember Lanoguard is absolutely fine on surface rust, but it’s only as effective as the surface it sits on – make sure the surface is stable and not flaking.
  • Use our two-step process or a rust converter if you have a very unstable surface on the underbody.
  • Any concerns or problem areas, do get in touch. If certain components (brake lines etc.) are so badly rusted they no longer have their structural integrity – do get in touch or consult a specialist, as underbody care products are not a replacement for parts which require essential replacement.
  • If you do opt to get restoration work done on your very rusty chassis, Lanoguard works great as a post-restoration treatment to keep the value of your investment and protect it.
  • The sooner it’s protected the better! It’s never too late to start nourishing your underbody and ensuring it doesn’t deteriorate further.

See below our Underbody Care Range, and don’t hesitate to get in touch if our friendly team can help at all. Call us on +44 (0) 330 100 1959 or email


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