ENGLISH	ITALIANO

ANTIOSMOSIS TREATMENT

Sandblast the hull with coarse sandpaper, until the gel-coat is completely removed, if it is covered with blisters. In case a few  are present among the inner layers as well, these must be opened with a chisel one by one. However if such bubbles are too many to be singularly treated, the first layer of the hull must be completely removed. The easiest way of carrying out this task is to use a large carpenter chisel with a handle of about 50 cm. Instead, in case the gel-coat does not show any bubbles, or only small cracks are present, it will be enough to roughen the surface with light sandblasting or sanding with coarse sandpaper.

Wash thoroughly the surface with fresh water. Let it dry for at least two or three months. If the weather happens to be particularly wet, preventing the surface from drying properly, an electric dehumifier can be used, wrapping the hull with a plastic sheet, as much hermetically as possible. It has been noticed that during drying time, even though the hull was previously washed properly with fresh water, it can keep on expelling a dark liquid (acetic acid or other compounds derived from the deterioration of polyester resins) from inside the fibreglass up to the surface. Such oozing of the surface is particularly noticed in humid weather conditions, when small dark spots appear on the surface. In order to eliminate these substances from the surface, it will be necessary to wash the hull with fresh water 2 or 3 times more during drying time, carefully drying the surface with a cloth after each wash. It is particularly important to wash the surface also one or two days before starting the treatment with BARRIER. This is because the substances oozing from the fibreglass affect adhesion and moreover, being water soluble, they would attract water from the inside, creating the possibility for blisters to form.

Apply one coat of PRIMEPOX using a brush, this product has a very good adhesion on both fibreglass and the gel-coat. As soon as PRIMEPOX is completely dry, (this will take approximately one or two days), sand the surface and apply two or three coats of BARRIER TIX or GREEN. The two coats must be applied within 24 hours from each other when the temperature is about 18°C. If the temperature is higher the product will dry faster and therefore the maximum interval of time between each coat must be of maximum 16 hours or even less. Moreover the quantity of BARRIER to be applied when restoring the hull is of 0,5 litres for each square metre of surface. Applying such quantity of BARRIER we will obtain a protective film of 450 microns, enough for a total impermeability, superior to the impermeability of traditional gel-coat based on polyester resins.

Apply one coat of FIBERGLASS PRIMER after sanding the surface with medium sandpaper (n.120-150) and then apply two coats of antifouling SUPER 505, MARLIN TF, MARLIN CF or MAXIMA, insisting with a third coat on corners and rudder.

FILLING WORK

In case the hull needs some filling work, this will be done with our EPOXY FILLER, which is very easy to apply and sand afterwards. It must be applied after the first coat of PRIMEPOX or between the BARRIER coats, after sanding the surface. Our EPOXY FILLER  features the same protective power as BARRIER, therefore, when needed, the whole hull can be covered with a coat of EPOXY FILLER.

Application of the last coat of BARRIER with a knife: BARRIER’s hardener (component B) is also available in paste, this version is called A SPATOLA and is very easy to be applied, allowing an extremely smooth finishing, without risks of drippings or strains.