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Yes, but you’ll need to make sure that the old exterior paint is in good condition. Before painting over the old paint, clean the surface thoroughly with a pressure washer. If you are opting to paint a lighter color over a darker one, you might need to apply a tinted primer so that the old paint color doesn’t show through.

Bubbles can appear during painting for several reasons, but poor adhesion or trapped moisture are the most common. Painting over dirty, wet, or improperly prepared surfaces leads to air or moisture getting stuck under the paint layer. Using the wrong tools, applying paint too thickly, or working in extreme temperatures and humidity can also cause bubbling. In some cases, incompatible layers of old and new paint types, like latex over oil-based, create tension, leading to blisters and bubbles.

You should always use a primer before painting over wallpaper to help the paint adhere correctly and get a good finish. Not all wallpaper can be painted over, so do a test patch in an inconspicuous area before painting an entire wall. If the primer and paint don’t adhere, you’ll need to remove the wallpaper, prime the wall, and then paint.

There are several pros and cons to brick houses, including the fact that painted brick requires more maintenance than bare brick. For one, you need to repaint the surface every 10 or so years. This is a costly and time-consuming process that requires sanding, scraping, washing, and a new coat of paint. You also need to touch up the paint if it chips or fades. Unpainted brick, on the other hand, may need cleaning periodically, but you won’t need to go to the same levels you would for painted brick.