To paint galvanized surfaces, a zinc paint or zinc varnish can be applied relatively easily. The commercially available products are made of synthetic resin or polyurethane. Both one- and two-component agents only adhere reliably to zinc surfaces that have been cleaned with a so-called ammoniacal mesh wash.
Zinc "salts "
Zinc is used to protect metal components outdoors from corrosion and rust. In particular, steel such as on garden gates and fences, but also patio furniture such as the frame of a garden table or covers made of trapezoidal sheet metal are usually galvanized.
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As a chemical element zinc (Zn) is one of the non-noble metals. It closes the surfaces of the corrosion-prone iron and steels. In many cases, the protective coatings include, usually only referred to as galvanizing, other metal abstracts in the form of alloys. A typical example is brass that can be painted similar to zinc, but less to the separation of specific salts tends to be.
Zinc reacts with the ambient air through the formation of zinc salts. They must be thoroughly washed off before painting to ensure the adhesion of synthetic resin or polyurethane color, such as Hammerite.
So stroke zinc color
- Dinner detergent (not returning)
- Zinc color
- Grinding means (240er grain)
- Natural sponge
- Protective gloves
- Eye and respiratory protection
- Natural bristle brush
- Brush cleaner
With rough pre-cleaning you remove dirt residues deposited on the surfaces. Then sand the surfaces. You can easily get into the spaces with cut strips of the abrasive.
2. Mix the detergent
Put on the protective goggles, put on the respiratory protection and at the latest now put on the protective rubber gloves. Mix water with ammonia at a ratio of one in ten to one in 15. Add a splash of dish soap.
Apply the detergent with a natural sponge in circular rubbing movements so that a layer of foam develops. Let the foam work for about ten minutes.
4th. Rinse off
Rinse off the foam thoroughly with clean water. Water under pressure from a hose is faster than pouring it over from a bucket or watering can. Let the component dry well.
Apply the primer according to the manufacturer's instructions.
6th. To brush
Paint or varnish according to the manufacturer's instructions.Tips & Tricks Do not use alkyd resin-based paints or varnishes. They react with zinc and become brittle to the point of flaking.