Masonry Walls and Ceilings. Interior masonry walls and ceilings above grade may, in general, be painted in much the same manner as plaster surfaces. Here again, it is necessary to allow adequate time for the masonry to dry before applying paint and, in addition, attention should be given to the preparation of the surface. When decorating a wall containing Portland cement (concrete, for example), it is essential to take precautions against the attack of alkali. For this purpose, alkali-resistant primers such as rubber-base paints may be used when oil paints are to follow. Paints in powdered form require the addition of a liquid to prepare them for use. The manufacturer's directions as to the amount of oil, varnish, water, or other vehicle required should be followed. Basically what you're looking for is a good, solid foundation of existing paint that is stable and still strongly bonded to the car. Many times an original factory paint job, even after decades will meet these criteria.
Anti-condensation paints are used for rooms with humid conditions such as kitchen and bathrooms. This paint is usually formulated to prevent condensation and often includes fungicide. The leading brands now flag up paints with lower VOCs and produce paints that are virtually odour-free - the Breatheasy range by Crown is one example. Most leading brands now produce high-quality water-based acrylic paints which outperform the older technologies of vinyl and oils. Try before you buy Colour cards are fine for making an initial selection but you will want to see a true paint sample in situ before committing. Tester pots vary in price from £1 to £4. Paint onto a sheet of paper that you can move around the room to enable you to see the colour in different light conditions. The effect varies greatly. The window wall can seem dark while the wall opposite will be flooded with light. And of course there is a dramatic difference between natural and artificial light. Finally paint a patch directly onto the wall to gauge the colour, coverage and the final finish. Ecological Paint. The "organic" paint brands, such as Ecos, which emerged in the late 1980s, heralded a new era of odourless paints, free of solvents and VOCs (volatile organic compounds) and paved the way for other companies' environmentally safe formulas. Following European legislation, the first stage in lowering the solvent content in paints and varnishes is set to come into force in 2007.