Before deciding which paint to use, homeowners need to consider the differences between exterior and interior paints. Oil-based and latex paints are both available in exterior and interior varieties. Interior paints are highly stain-resistant and can be scrubbed. They are also easy to touch up and provide good coverage over stains. Exterior paints are formulated to be resistant to fading and mildew, and they can expand and contract with different weather conditions. Because exterior paints are semi-porous they are less likely to flake, but if the surface is not properly prepared, they can crack and peel easily.

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