Paint Porch Railings

Porch railings go through wear and tear because they are used often and exposed to the elements. You may need to repaint your railings every 5 to 10 years, and perhaps more often in humid or extreme climates. Unless you have newly constructed railings, you will need to prepare the old railings and remove rust or peeling paint before applying fresh paint. Prep work is perhaps the most important part of the process, because it will determine how durable the paint job is in the future. Try to find materials that are high quality and specially formulated for outdoor use. Find out how to paint porch railings.

Steps

Prepping your Porch Railings

  1. Lay down drop cloths around your railings. Try to drape them over concrete, furniture, plants and even soil so that you can pick up paint chips or rust at the end of the preparation process by folding up the cloth or plastic sheet.
  2. Wear a long sleeved work shirt, long sleeved pants, work gloves, safety goggles and a face mask for the duration of the preparation process. Brushing and sanding expels fine dust, dirt and harmful materials in the air.
  3. Use a power washer to remove caked on dirt and loose paint. Stay a few feet from the rails when using the washer to avoid damaging the rails.
  4. Remove more debris, dirt and peeling material from your porch railings. Depending upon the type of porch railing you own, specifically plastic or metal, you will use a slightly different process.
    • For metal railings, start by using a wire brush to remove rust over all the railing's surfaces. If you have ornate metal railings or hard to remove rust, find a wire brush attachment for your power drill and apply it to your railings.
    • For wooden railings, use a wire brush and metal scraper to remove paint from the surface. Try to work with the grain of the wood rather than against it to avoid damaging the surface grain.
    • For either surface, place a large shop vacuum nearby to suck up falling debris and improve the ease of cleanup.
  5. Sand the surface of the railing with medium-grit sandpaper. 80 grit sandpaper is good for either metal or wood railings. Make sure to get all surfaces of the railings while scuff sanding.
  6. Vacuum the surface of the railings and brush excess debris away with a soft brush. Rub the surface of the railings with tack cloth to remove tiny bits of debris.
  7. Caulk any gaps or holes in wooden railings with a wood caulk gun. Ask a clerk at the hardware store to suggest a good wood caulk for exterior use. After applying caulk with a drip-free gun, use a moist towel to smooth the caulk into the gaps.
    • Wooden railings that have been improperly painted or painted long ago may be loose and have gaps between the spindles and railings. These gaps allow moisture to leak into the wood, ruin the paint job and degrade the wood.
  8. Remove excess caulk. Allow the caulk to dry for at least 24 hours, or according to package directions, before continuing.
    • You can use a polyurethane caulk to connect wooden railings to concrete. Be careful to use a light squeeze because it is harder to remove. Smooth it over with a moist towel mixed with a small amount of dish soap.

Painting your Porch Railings

  1. Prime your railings before painting. If you are painting metal railings, get a primer with a rust inhibitor. Otherwise, consult with a hardware store clerk about the best kind of outdoor primer for your project.
    • Use a small, {{safesubst:#invoke:convert|convert}}, roller to apply the primer on the spindles if they are small but square. If your railings are ornate, you will need to use a wire or sponge brush.
    • Make sure to coat well in 1 direction. Do not leave any excess paint, because you will be able to see priming strokes through the finish coat of paint.
    • Allow the primer to dry according to package directions.
  2. Apply your finish coat of paint. Use careful strokes in the same direction. Buy a brush that is well sized to your railings to avoid drips from the application of too much paint.
  3. Allow the coat to dry and apply another coat of paint, if your railings were well worn. This will increase the durability of your paint job.
    • For intricate metal railings, you may choose to apply paint with a paint sprayer. Try to get a small paint sprayer that will reach into crevices. Set up a cardboard shield, if possible, to avoid spraying grass or walls.
  4. Block off your railings and allow them to dry for a few days before using.



Warnings

  • Beware that sanding and treating wooden porch railings can release arsenic from treated lumber into the air. Always wear a particle mask over your mouth when completing this work.

Things You'll Need

  • Drop cloths
  • Wire brush/power drill attachment
  • Particle mask
  • Safety goggles
  • Work clothes
  • Shop vacuum
  • Work gloves
  • Power washer
  • 80 grit sandpaper
  • Metal scraper
  • Soft brush
  • Tack cloth
  • Wood caulk
  • Moist towel
  • Polyurethane caulk
  • Primer
  • Paint roller
  • Paint brush
  • Finish paint
  • Paint sprayer

Sources and Citations

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