3 - Veneziani Yacht Paints

SANDING
Always wet sand, this means you
must first wet the surface and
sandpaper with water. This reduces
the amount of dust produced
(especially from the antifouling which
can be dangerous). Always wear
a mask, gloves and goggles when
sanding.
Parts still covered by old paint must
be sanded.
Follow the steps below:
• hull: sand with 80 grade sandpaper,
always wet, and roughen the
entire surface of the old antifouling,
leaving the undercoat intact.
• topsides: sand with 180-240 grade
sandpaper.
Before starting to paint, remove all
dust and degrease well using a rag
dampened in water and never in a
solvent.
Example of common sanding papers.
Table of abrasive papers
Corresponding grades of dry and wet sanding paper
Surface to be sanded Dry paper grade Wet paper grade
Wood 60 -120 -
Iron and steel 60 - 120 -
Aluminum and light alloy 60 - 100 -
Aged gel coat before primer 80 - 120 240
Gel coat before primer for antifouling 150 - 240 320 - 400
Gel coat before topcoat 220 - 240 360 - 400
Painted surface 150 - 220 180 - 240
Varnished surface 220 - 240 320 - 360
Two-pack fillers 40 - 80 -
One-pack and knifing fillers 120 - 180 240 - 320
Barrier coats 280 - 320 -
Undercoats before topcoat 320 - 400 600 - 800
Topcoat to eliminate defects 1000 - 2000 2000 - 3000
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