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Yes, you can paint over old exterior paint, but success depends on the condition of the existing paint and proper surface preparation. If the previous coating is in good shape (not cracked, peeling, or flaky), you can paint over it with less prep work. However, for the most durable and professional-looking results, follow these key preparation steps:

• Clean the Surface: Thoroughly clean the exterior to remove all dirt, grime, and mildew. A pressure washer can be very effective for this.

• Scrape and Sand: If the old paint is peeling, cracked, or flaky, you must scrape off all loose paint. After scraping, sand the surface to create a smooth, even base for the new paint. Sanding is especially important for wood siding.

• Apply Primer: Using a quality exterior primer is highly recommended. It ensures the new paint adheres properly, improves durability, and provides a uniform finish. If you are painting a lighter color over a dark one, a tinted primer will help cover the old color more effectively.

Some brands offer paint-and-primer-in-one products for convenience. Taking the time to prepare the surface properly will not only increase your home's curb appeal but also help protect your siding and extend its life.

If your home was built before 1978, there’s a chance that any paint on your hardwood floors could be lead paint—especially if it was already there when you moved in. Because lead is toxic, hiring a licensed pro to remove it is mandatory. The average price for professional lead paint removal ranges from $1,500 to $5,300 and depends on the scope of the project.

There are times when you should remove all exterior paint before repainting. This includes when you need to get rid of lead-based paint (which should be done by a pro), or if you need to apply a different finish than what’s already there. Your house may also have too many pre-existing layers of old paint, in which case you’ll be better off getting rid of the old layers first.

Linoleum adhesive is quite stubborn, so you may have to try several different methods for removal. You can start with a wallpaper steamer and steam it off or add laundry detergent to water and let it soak into the adhesive. You can try paint thinner directly on the adhesive for about 10 minutes and then wipe away.