Gelcoat Black Volume:4L Black A side is sand/grit with

A side is sand/grit with coating

B side is gloss surface

5m x 70mm 40 grit Sandpaper

Used in boat building

Corematt should be fully impregnated with resin in order to bond and become a strong stiff layer

Gelcoat Black Volume:4L Black A side is sand/grit withGelcoat is a top coat resin containing fillers and pigment. The fillers allow the gelcoat to spread in an even layer across moulds. Commonly brushed on as the first layer within mouldings which once turned out, will become the top layer. Gelcoat is available in 1L or 4L and comes in a variety of colours. Gelcoat requires Catalyst MEKP at 2% to enable it to harden (SOLD SEPARATELY) Catalyst guide (equates to 2% mixture plus extra if needed) : 1L of