Universal eggshell Universal Eggshell is for use on almost any interior or exterior surface. It can be used on walls, ceilings, wood, brick, stone, render, plastic and some metals. It is a durable, water-based paint that can be used as an environmentally friendly alternative to oil-based products. It is self priming, so it is possible to use them directly on surfaces without the need of a separate priming product. It can be applied directly to plastic, metal, (zinc, copper and galvanised) and previously painted surfaces. Customers often specify Providence Paint colours when they are commisioning furniture. You can find our colour families and colour names here. Click here for individual Providence Paint colours.