Now you are ready to prepare the surface of your steel gutters for the paint.
(This is Part 2 of a 2 part series. To return to Part 1, click here.)
Step 3: Preparation
Remove the downspout braces. You will paint them separately. This allows you to paint the underside of the downspout without trying to stick your paint brush between it and your house. Inspect your gutters again. If there is any loose paint after cleaning them, you will need to scrape it off with your paint scraper. Make sure you check in any ridges also. Use the tip of your scraper to get loose paint out of the ridges. Next, take the foam sanding block and from your starting point start sanding. It is best to use a sanding block for this job because it will conform to the shape of your steel gutter. Don’t forget to sand your downspouts also. After you are done sanding, rinse your gutters in a downward motion again. You want to remove any paint chips and paint dust. Let dry.
Step 4: Apply Primer
Priming your steel gutters is an important step. It provides rust prevention, protection to your gutters and helps the paint stick. Do not skip this step. You want an oil based primer with rust inhibitor. When buying your primer, make sure it says rust inhibitive on the can. It most commonly says this on the front of the can, or if it doesn’t, read the description on the back. Oil based primers coat steal better because they can flow in the microscopic surfaces of the steel. It also prevents moisture and air from coming through which stops the corrosion process.
On your ladder start from the end or your steel gutters and work down. Apply your first of primer, brushing or spraying it on evenly going in the same direction of the gutter. After that coat dries, apply another 2 to 3 coats, letting dry between.
Step 5: Apply Paint
Last but not least, after your primer has dried completely, it is time to paint. You can use an oil based enamel or an exterior latex paint. It is best to use satin, semi-gloss, or gloss paint. Not only will it deter water, it will repel dirt and grime as well. This type of paint also makes it easier to clean your gutters in the future with just your water hose. Do not use flat paint. It forms a chalky surface and water and dirt will be absorbed into the paint. Starting at the end, brush or spray on a thin coat of paint just like you did with the primer. Brush out any runs in the paint as you go. After the first coat is dry, apply another coat in the same manner. You should not need any more than two coats. While you’re waiting for the paint to dry, paint the downspout braces. Reattach them to your downspouts when all paint is dried.
It takes some work and elbow grease to paint your steel gutters, but in the end it will be worth it. Your house will look great and you will have the pride of a job well done.