Practical advice

Paint consumption, yield

All von Höveling yacht paints are adapted for brushing and rolling. The amounts mentioned in our documents are to be understood as those necessary for one coat of paint with a standard layer thickness, which results from brushing or rolling (dry layer thickness 40µm = 0.04 mm). Exception: Antifouling Y 88 (dry layer thickness 10µm = 0.01 mm) and all wood preservatives.

When brushing or rolling, please allow for 10% loss. In spraying, consider the loss to be approximately 30%. If paints and varnishes are diluted to a maximum of 5% to 10%, the yield is higher, but the thickness of the dry layer is correspondingly less; therefore, one to two more coats of paint have to be applied to reach the recommended layer thickness. For spray painting, a greater addition of thinner is necessary.

Because of the many different ship types, there is no generally valid formula for the calculation of the area below the water line. However, the following formula offers an approximation:

Area below the water line:
Length of the water line x (width + draught)

Area above the water line:
2 x (overall length x mid-freeboard)

For the decks:
0.6 x (overall length x width) minus the area of the cabin, cockpit etc.

For masts and round wood:
Diameter x 3.14 x length

[ Back ]

Steel and its surface pretreatment

Each repair of rust damage is only as good as the quality of the rust removal. Where blast cleaning is not possible, the surface has to be carefully derusted by hand. The surface must be free of oil and fat. Under no circumstances should so-called rust converters or rust stabilizers be used. Blasting (purity grade Sa 2 ½) offers an optimal surface preparation. Immediately after the blasting, the surface has to be freed from dust and protected against new rusting with a coating of Antorit Zinkgrund D 50. This protection lasts up to 3 months.

[ Back ]

Repair and refreshing of old and foreign coats of paint

All old coats of paint must be carefully cleaned before the refreshing. For the removal of salts and residues of fat, oil and preservatives, please apply the cleaner Reiniger 350 D 49, either undiluted or diluted, according to the degree of soiling. Allow for 15 minutes of reaction and rinse with plenty of fresh water.

Damaged spots are ground and polished down to the intact base. For this, rust, oxides and blooms must be eliminated completely. Unstressed old coats of paint, such as brittle antifoulings, chalking and flaking coats of paint, must be removed. Damaged spots are identified and repaired according to the selected coating system, followed by complete coating; thus the repaired system corresponds to a new structure.

When refreshing foreign coats of paint, the old antifouling, if it is not self-polishing and does not contain Teflon, is repainted all over with a coating of the universal priming Universalgrund 6055 D 80 as a barrier coat. Afterwards, repaint twice (two coatings) with the newly selected antifouling product. For annual refreshment coatings, one new antifouling coat is sufficient.

Renewing coats of paint in the area above the waterline with one-component (one-resin) is possible without any problems after a year (12 months), first grinding over the entire surface and then coating with our DD-Hartlack, hard varnish system.

[ Back ]