How to Paint Aluminum Gutters Part 2

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  • 8-10 hours
  • 30-400

When you have begun work on your aluminum gutters, you have them installed and they are primed, it is time for them to be painted. But take a moment to ensure that you have done everything properly leading up to you being able to paint them successfully.

(This is Part 2 of a 2 part series. To return to Part 1, click here.)

Step 1 – Prepare Your Gutters

The first thing that you have to do is prepare your gutters so that they are ready to accept the paint. Begin by removing the old paint from the gutters using a paint scrapper then going over it with a piece of sandpaper to remove any remaining pieces. Once this has been done, it is important that you clean the gutters. By mixing a small bucket of dish soap and water, you can scrub the gutters down and ensure that they are clean. Remember that they need to be clean so that the paint will stick to them properly. Then take a hose and rinse the gutters clean from the roof down, so that dirty water doesn't pool within the gutters.

Step 2 – Prime the Gutters

You need to prime your gutters to help protect them and make them ready for the weather and the future. Pick a primer that is ammonia-free because there is a chance that the ammonia will have a reaction to the aluminum and create a gas pocket between the layers of paint.

Step 3 – Apply Your Enamel

Make sure that you give the primer plenty of time to dry. About 48 hours is a good amount of time. Once the primer is dry, you can apply a coat of oil-based enamel. As far as the type of enamel, the choice is up to you. It comes in either flat, satin or gloss. It is recommended that you use either a satin or gloss enamel as these are both nonporous and will allow the gutters to more effectively repel water. Make sure that you apply the enamel evenly, picking up and smoothing out any runs that may occur.

Step 4 – Apply a Second Coat

Once you have allowed the first coat to dry, you can now go back and start on your second coat. Remember that depending on your location, the drying time may be shorter or longer.

Step 5 – Paint Your Gutters

Now that you have done both coats of primer and enamel, you can now paint your gutters. Once you have all of your equipment set up, you can begin painting. Make sure to allow each coat of paint to dry, and just like with the enamel, you need to be able to go back and pick up any runs that may have occurred. This will allow give you a professional-looking finish.


When you begin your painting, you should remove the braces from the gutters. This way you can paint them separately as well as paint the gutters without running into any issues. By having the braces removed, you can freely paint all of the gutters without any problems.