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How to Paint Flagstone

Flagstone is a common medium for stone walkways, though it can also be for siding, fountains and other outdoor home features. Flagstone comes in a number of natural colours, making it possible to create checkered or staggered patterns with the stonework. Natural flagstone colours are still limited, however, to earthy browns, muted reds, blues and greys. If you want to paint your flagstone a different colour, you'll need the right type of primer and paint.

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  1. Wash the flagstone surface with a muriatic etching solution and a sponge.

  2. Rinse off the surface with a garden hose after washing. Wait for the surface to dry before continuing.

  3. Prime the flagstone with masonry primer. Masonry primers are available at most home improvement stores. Apply the primer using a 3-inch sash brush or a heavy-nap roller.

  4. Paint the flagstone with elastomeric latex paint. Elastomeric paints are made with special resins that fill small cracks and gaps in stonework for a longer-lasting finish. Use a clean 3-inch sash brush or heavy-nap roller. Let the paint dry for a full 24 hours before using the surface.

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Things You'll Need

  • Muriatic etching solution
  • Sponge
  • Masonry primer
  • 3-inch sash brush
  • Heavy-nap roller
  • Elastomeric latex paint

About the Author

Richard Kalinowski began writing professionally in 2006. He also works as a website programmer and graphic designer for several clients. Kalinowski holds a Master of Fine Arts from Goddard College and a Bachelor of Science in education from the University of Wisconsin-Whitewater.

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