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Painting Outside Paint is not just for inside. Special paint is made for outside use. Exterior paint must resist rain, sun, and temperature changes. Before painting, the surface must be clean and prepared. Sometimes, workers need to apply a primer first. The primer helps the paint stick better. Then they apply one or two coats of the final color. A good paint job protects the material underneath and makes the building look fresh and new. CONVERSATION 3: Choosing Paint A painter is talking