Before any underbody protection goes on, you need to know the condition of the metal beneath any existing coating. This vehicle shows why.
What we found
This vehicle had previously been coated over existing rust. Corrosion progressed beneath the coating, and the vehicle was eventually written off because the damage was too severe to repair.
Our inspection found that the first two stages of any proper treatment had been skipped: the underbody was never cleaned and the existing rust was never removed. The coating was applied straight over it, and the products used were not suitable for the job. Sealed in under the wrong coating, the corrosion spread faster than it would have on an untreated vehicle.
Why preparation comes first
A protective coating only works on a surface that is clean, dry and free of loose rust. Coating over active corrosion does not stop it. It hides it, traps moisture against the metal and makes the problem harder to see until it is too late.
That is why every treatment at Angels Garage starts with cleaning, drying and a proper inspection, and why existing rust is dealt with before a single drop of protection goes on. If you are unsure about an existing coating on your vehicle, or what is underneath it, book an inspection before anyone applies more product.
The products we use are Mercasol and Noxudol underbody and cavity systems from Auson in Sweden, available in Ireland from mercasol.ie.