Zinsser Grade 1 White 5LIntroducing Zinsser Grade 1, the ultimate solution for high performance, mould resistant paint designed for interior walls and ceilings in traditional and historic buildings, ranging from churches and castles to period properties. When it comes to decorating traditional and historic structures, meeting the specific requirements of the building is paramount. Standard primers and emulsions may trap moisture, leading to premature flaking and cracking of