Metal Garage Door Paint Peeling: Steps & Items Needed To Fix Peeling Paint

Steps And Items Needed To Fix Peeling Paint On Metal Garage Door

Your garage metal door paint chips or peels off due to uninterrupted exposure to the elements. If the paint is not applied correctly on the metal garage door then it can get peeled off easily or you were using the wrong type of paint on the door. If you want to fix metal garage door paint peeling then you need to collect all the given items and follow all the given steps. Here is the list of required items and steps to finish your work properly:

Things You Will Need

  • Metal Putty Knife
  • Sandpaper, Medium-Grade
  • Trisodium Phosphate
  • Rubber Gloves & Sponge
  • Garden Hose & Cloth
  • Rust-Inhibiting Metal Primer
  • Acrylic-Latex Exterior Garage Door Paint
  • Paintbrush, Paint Roller & Paint Tray

Steps For This Process

  1. First of all, you need to scrape all the chipped paint from your door, peeling & bubbled paint off from your metal garage door with the help of a rigid, metal putty knife.
  2. Next you need to sand the areas with the help of sandpaper(medium-grade) where the paint has been removed to mildly roughen the surface of your metal garage door. This will allow your paint to adhere more readily to your metal door.
  3. Sand off any rust which is developed on your metal garage door with sandpaper(medium-grade).
  4. Now you need to wash your garage door with a solution of 2 gallons of warm water and 1/3 cup trisodium phosphate and a sponge. You need to use rubber gloves to protect your hands from your strong homemade soap solution. Rinse off your door with clean water from your garden hose.
  5. Next you need to wipe down the areas where the peeling or chipped paint has been removed with the help of a clean, dry cloth.
  6. Now you need to apply a coat of your rust-inhibiting metal primer with zinc to the bare areas of your door. Wait 2 hours for your primer to set or to dry to the point where it is only slenderly tacky to the touch.
  7. Now you need to test your acrylic-latex paint by applying a small square of it to your door with the help of a paintbrush. Wait for at least 2 hours for it to dry wholly.
  8. Next you need to place a piece of your masking tape over the paint and then peel it off. If the applied paint comes off with your masking tape and it will not stick to your metal door and will also bubble or chip after drying.
  9. It could also be caused by unintentionally purchasing the wrong type of paint. Check your paint can label for guidance on the paint's minimum & maximum temperature which is required for the application and then reapply your paint when the outdoor climate is within the proper range.
  10. Finally you need to apply a coat of your acrylic-latex exterior paint to your metal garage door by using your paint roller.

Tips & Warnings

  1. Tip: Most of the hardware and home improvement stores will exchange or return your paint cans, even after it has had color added. If you find that you purchased the wrong paint or added the wrong color, you need to exchange your paint for the correct color & type.
  2. Warning 1: You need to handle the tri-sodium phosphate with care because it can harm your skin.
  3. Warning 2: You don't have to use oil-based exterior paint on the metal door. Some manufacturers will void the warranty if you applied oil-based paint to your metal doors.
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