FAQs : General

What is 'grinning' and how can I correct it?

When an under-surface shows through a painted surface, it is said to be 'grinning through'. This can happen when a paint fails to completely cover the under-surface, or when an incorrect undercoat has been used for a gloss system. To correct the grinning, thoroughly clean down the surfaces to remove all dirt, grease and surface contaminants, rub down with a suitable abrasive, dust off and repaint.