EN
Two layers planned as one system
Applying a suitable paint system over galvanizing is known as a duplex approach. Combining zinc coating and paint allows protection and colour requirements to be addressed together. However, not every paint can be applied directly to every galvanized surface. Selection must consider surface condition, exposure and application requirements.
Do not overlook surface preparation
A newly galvanized surface and one exposed outdoors for a long period may require different preparation. Oil, dirt and surface products can affect adhesion. Select preparation methods using the paint manufacturer’s technical information and a coating specialist’s assessment. The aim is to achieve suitable conditions without unnecessarily removing the zinc layer.
Requirements to share before ordering
Include colour, gloss, visible surfaces and exposure conditions in the technical brief. Clarify who will perform painting and at which stage. Post-galvanizing work can also affect packing and delivery sequence. Informing Galmetsan of painting plans supports coordination with the next process; confirm the scope of any painting service separately.
Information shared between galvanizer and painter
Fabrication, galvanizing and painting may be performed by different businesses. Each needs more than its own processing date. Share the delivered surface condition, storage period, previous treatment and preparation required by the paint system. Allow for samples or colour approval in the schedule. Define responsibilities and corrective procedures if a concern is found before painting. A shared technical file reduces uncertainty caused by treating the layers as unrelated orders.