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Studio ti 03312 540-04usa
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14.5.3 Renewing antifouling protection
Periodically, it will be necessary to apply a fresh coating of antifouling
paint to the yacht’s bottom. Before doing so, make sure that the new paint
to be applied is compatible with the existing coating.
Antifouling formulas vary, and a new coating will not adhere well if its
formula is incompatible with the layer beneath it.
If the existing coating is smooth, adhering well and is not peeling, you can
apply a fresh coat directly over the existing layer. If the existing coating is
worn, peeling, flaking, cracking, etc. it will have to be removed before
repainting.
If you apply a fresh coating over thick, built-up coats of antifouling, the
newly applied paint will not adhere well to the bottom and it will peel away.
To prevent this condition, prior to applying fresh antifouling paint, it will be
necessary to remove all the previously applied layers and to prepare the
yacht’s bottom in the same way as it was prepared treated before the first
application of an antifouling paint.
This will ensure that the antifouling paint will adhere well.
Removing old coatings and applying new coatings is hazardous to your
health. Read and follow all warning indications, found on product labels,
for the use and disposal of these materials.
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WARNING
Antifouling is poisonous and should never be burnt, use only authorized
disposal procedures and in case of doubts contact the authorities in
charge. The sandblasting operations and removal of antifouling must
be carried out with suitable clothes and protections.
NOTICES
Certain underwater fittings on the yacht must never be painted. Paint
will prevent the proper performance of depth sounder and speedometer
sensors and anodic (sacrifical zinc) protection. To prevent
compromising the effectiveness of these fittings, do not paint
transducers or anodes.
Shaft and propellers that have been painted may quickly lose their
coatings due to the velocity of water action during their normal function.
NOTICES
Removing old antifouling by particle blasting may damage the hull
bottom gel-coat and/or the anti-blister barrier coating applied by the
yacht’s builder.
To avoid damaging the hull bottom gel-coat and/or other prophylactic
coating, follow the paint manufacturer’s directions for removing
antifouling coatings, e.g., with paint removers, by wet sanding, etc.
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WARNING
To remove the old antifouling, do not use sandblasting methods, as it
may damage gel-coat surface and the anti-osmosis resin applied by the
Manufacturer. As suggested by the antifouling manufacturers, use paint
removers or, as an alternative, wet sanding.
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