FERTAN Stoneguard Protective Undercoating is a resin-based
product that does not contain any bitumen or tar constituents.
It forms an elastic layer that provides robust protection against
stone chipping, moisture, spray and salt. In addition, it has a
sound-absorbing anti-drone eff ect. FERTAN body and stone
guard demonstrates good adhesion to steel, stainless steel,
galvanised steel, aluminium as well as polyester laminates.
Preparation of the subsoil
The surfaces must be free of silicone, grease, oil and corrosion
before application. Please use the FERTAN Degreaser Remover and
the FERTAN Rust Converter for de-rusting. Be sure not to cover
or mask areas that are not coated, such as brakes, exhaust +
catalytic converter, etc.
Steel: Degrease and sand, if necessary, work with primer
Galvanised sheet + aluminium: Matt with sanding wool and
Stainless steel: Degrease
Polyester laminates: Degrease, sand with sandpaper 80 – 120
grit and degrease again
For optimum protection, apply the product in two or three coats
of 3940 ppm and allow each coat to harden at approx. 68°F for 60
minutes with good ventilation.
At the earliest, 60 minutes after the last application at 68°F with
1 liquid qt. FERTAN body and stone guard is suffi cient for an
applied layer thickness of 3940 ppm for an area of about 30-42
25320 16.9 fl.oz. - Aerosol
25420 1.1 Qt.
Safety Data Sheet - Aerosol
Safety Data Sheet - Liquid