UPOL Extra Fine Polyester Stopper is a two-component chemical paste. Used for the filling of small holes and imperfections in surfaces prior to being over-painted. Very soft, smooth paste which is easily spread in thin layers to provide the perfect finish for painting and easily sanded wet or dry after a few minutes.
Original paint surfaces (with the exception of thermoplastic acrylics) degrease and abrade with P180 grit paper.
GRP degrease and abrade with P80 grit paper.
Pot Life: Once mixed, 5 – 6 mins. at 20°c with 2% hardener.
Can be sanded after 20 mins. at 20°c. Extra Fine polyester filler can be over-painted with most paint systems including 2K.
100 parts by weight TOPSTOP polyester filler, 2 parts by weight U-POL hardener for polyester filler.
The exact mixing ratio is not critical, although over or under catalysation may affect the gel time.
Do not greatly over catalyse 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 occur where too little hardener is used.
Over Painting: Ideally a full system is recommended including primer.
