How To Give New Life To Your Aging Metal Roof

As your metal roof ages and begins to lose its luster, you have two choices: restore it, or replace it. Allowing the metal roof to deteriorate takes away from the aesthetic appeal and protective elements of your home. Here, you will learn how to restore your metal roof to make it look perfect and protect your home for many more years.

The supplies that you need to complete this project include:

  • Garden hose that reaches the rooftop
  • Bucket
  • Liquid laundry detergent
  • Sandpaper and wire brush
  • Rags
  • Putty knife
  • Rust inhibiting paint and primer for outdoor use on metal
  • Paintbrushes, rollers and trays

Plan Your Pattern

Instead of trying to tackle the entire roof at once, plan the pattern that you will be working. Find the area of your roof that is in the worst condition and begin there. Complete the process in small sections to avoid leaving unfinished metal exposed during inclement weather.

Prep Before Paint

Before you can paint the metal roof, you must prepare it properly. There are four steps that go into properly preparing the metal roof.

  1. Scrape away the peeling paint using a putty knife. Areas that are more difficult to peel may require the use of a wire brush to remove the peeling paint.
  2. Use sandpaper and the wire brush to remove rust from the surface of the roof. Take your time during this step to ensure that you have removed the rust as best as you can to avoid the rust from causing an unsightly finish and continued problems.
  3. Sand the surface with sandpaper to smooth the surface. The smoother you can get the surface, the more evenly the paint will go on and the better it will look when you are done. You may not think that a rough roof will be visible from the ground, but the high-gloss finish of the paint will make the rough areas quite visible, especially if they are large areas.
  4. Fill a five gallon bucket with very hot water and mix one cup of liquid laundry detergent into it. Use this mixture to thoroughly clean the area you are prepping. Laundry detergent is a great solution for cleaning the roof because it will not leave a thick residue, damage the plants and trees beside your home, and will get all of the grime off of the roof effectively. Once clean, use the garden hose to rinse all of the residue off of the roof. Allow the roof to dry before continuing to the next step.

Prime and Paint the Roof

Pour the primer into a paint tray and begin applying it to the surface. For areas that cannot be reached with the roller, use the paintbrush. Just be sure to apply a generous coat of primer over the areas that have been affected by rust. Heavily rusted areas could require a second coat of primer for an extra layer of protection.

After the primer has dried, apply two coats of paint.

Plan your roof painting project around the weather. You don't want to begin the process unless you have enough time for two coats of primer and two coats of paint to dry before the rain begins to fall. If you feel that you are unable to complete this project yourself, or you feel that the roof is too far gone after inspecting it, contact your local metal roofing contractor (such as Palmer Roofing) for help.


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