After his death and the war the paint company wen to Albert's niece and her husband. W. Heeren en Zoon was purchased by Adrian F. Zonjee in 1951. Adrian improved and expanded the line of marine paints. Domestic orders were soon followed by exports to Belgium, and then France and Germany in 1955. In 1985 Adrian Zonjee sold the company to his son Paul, who remains the sole owner.
Growth continues in both the United States and Canada.
Years of combined practical and technical experience ensure support for customers who need assistance with any aspect of the finishing process. Few companies have ever been in a position to contribute so much to the manufacture of their products. The master chemists and expert paint-makers proudly dedicate themselves to the further development of this craft. Their integrity, craftsmanship and vast knowledge of paint technology guarantees products made to the highest possible standard. Since the early years, W. Heeren en Zoon's emphasis has been on manufacturing and developing the finest marine coatings possible.