Paint Manual - Dove-Medows Marine Coatings Ltd

82
Trouble shooting
Fault Causes What to do
Fish Eyes – small
holes in the paint film
Appears during painting due to
silicone or oil contamination on
the surface.
Loss of gloss High humidity, cold conditions
and dew fall will cause the paint
to cure with a low gloss level.
Lifting or Peeling –
paint lifting or peeling
from surface
Lifting or Peeling –
paint lifting or peeling
from surface
Orange Peel –
surface mottled like
orange skin
Runs – running
of wet paint into
uneven rivulets
Sags – partial
slippage of paint in
thick areas like wide
runs
Wrinkling – surface
resembles the skin of
a prune
Ultra Violet degradation over a
period of time.
Poorly prepared surface.
Incompatible overcoating.
Moisture on the surface.
High moisture level in wood.
Overcoating times exceeded.
Poorly prepared surface.
Incompatible overcoating.
Moisture on the surface.
High moisture level in wood.
Overcoating times exceeded.
Primarily occurs when spraying
due to poor flow caused by
poor atomisation, insufficient
thinning, paint applied too
thickly or overcoated too soon.
Can also occur with some roller
applications.
Paint has been over thinned.
Too much paint applied.
Abrade back until contaminated
area can be degreased, allow to
dry and recoat.
Abrade back and repaint.
Remove loose paint, abrade,
degrease and recoat in
accordance with recommended
specification.
Remove loose paint, abrade,
degrease and recoat in
accordance with recommended
specification.
Abrade back to an even flat
surface and recoat.
If using a roller, it may be
necessary to lay off using a brush
or pad after roller application.
Abrade back to an even flat
surface and recoat.
Paint applied too thickly. Abrade back to an even flat
surface and recoat.
Paint applied too thickly causing
solvent entrapment.
Paint applied in direct sunlight
causing the surface to dry too
quickly resulting in solvent
entrapment (uncured paint)
under the surface.
If the paint hasn’t hardened,
remove with a scraper, clean
surface with Degreaser or
Thinners and recoat. On a cured
surface, abrade to a flat even
surface and recoat.