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U-Pol Extra No.4 Kit – 2.1L

£20.02 Excl. VAT

EXTRA polyester filler is a two component multifunctional paste used for the filling of holes and imperfections in most substrates. EXTRA has been specially formulated for the professional user and combines good filling and smooth spreading properties together with ease of sanding.

SKU: PUPOLE4 Category:
Technical Data


Mixing Ratio: 100 parts by weight EXTRA polyester filler,
2 parts by weight U-POL hardener for polyester filler.
The exact mixing ratio is not critical, although over or under catalyzation may affect the gel time. Do not greatly over catalyze the paste as this will not significantly speed up the gel time and could lead to bleed through and bleaching problems when over-painting later. Staining may also occure where too little hardener is used.
Pot Life: Once mixed, 4-5 minutes at 20°c with 2% hardener.

Directions Of Use


EXTRA polyester filler can be used on the following surfaces:-
– Bare metal including Steel, Aluminium and Zinc-coated substrate – degrease and abrade with P80 paper.
– Original paint surfaces (with the exception of thermoplastic acrylics) – degrease and abrade with P180 grit paper.
– GRP – degrease and abrade with P80 grit paper.
Drying Time: Sandable after 20 mins. at 20°c.
Over Painting: EXTRA polyester filler can be over-painted with most paint systems includig 2K. Ideally a full system is recommended including primer.

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