On the other hand, if the exterior surface over which you plan to paint was previously painted with oil-based paint, you should go ahead and repaint with the same kind. The problem is that oil-based paints is more susceptible to the expanding and contracting that climate changes cause than water-based asian paints and therefore if you use a water-based asian paints to cover an oil-based paint you are running the risk of the undercoating peeling beneath your shiny new paint job. If you are planning to paint an exterior surface that hasn’t yet been painted, go with water-based asian paints. In this way the surface will be better able to breathe. In addition, the latex exterior water-based asian paints will adhere better during climate extremes.
Before you apply painting over an exterior surface that has already been painted, use a piece of sandpaper or a wire brush on it. This will roughen up the shiny gloss enough to allow the new coat to bond better to the surface. Also be sure to heartily clean under any eaves or in any other protected and hard to get to spots. The best method for this cleaning is to use a mixture of water and detergent. Why is this step necessary? Because these areas don’t get completely clean from rain water and if they surface isn’t completely clean, the paint will not bond