Stoneguard Protective Underseal

Undercoating Black
Stoneguard Protective Underseal
Stoneguard Protective Underseal
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Regular price $14.96 Sale price $19.95

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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.

Pretreat surfaces

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

good ventilation.

Theoretical consumption

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

sq. ft.



25320   16.9 fl.oz. - Aerosol
25420   1.1 Qt.



Safety Data Sheet - Aerosol
Safety Data Sheet - Liquid

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