If you want an excellent, hard wearing roof, a corrugated metal roof is a great choice. It's also a great DIY project for people building a shed or building outhouses. This roofing material has a 20 to 100-year lifespan when cared for properly. Care is needed to maintain the roof's condition and integrity. The metal must be protected with a coat of paint. However, you need to make sure you choose the right paint and application technique, which will allow you to protect your roof by painting it once every 10 years. Here are the steps provided by roof painting Auckland that you need to take to paint your corrugated metal roof.

Painting a Corrugated Metal Roof

Step 1 - Clean the Roof's Surface

You don't want to paint a dirty roof. Before you apply a new coat of paint, remove debris and clean away built-up dirt on the roof's surface.

Maintaining the Roof

If your metal roof is located under a tree, then you will get an accumulation of debris and dirt faster than if it were in another location. To keep your roof in good condition, you should periodically clean the roof, after your paint it.

Use a Power Washer

Warning: If you're working with bleach, make sure you're wearing the proper safety gear, including safety gloves and a breathing mask. In addition, you should use caution when using your ladder to access the roof. Have someone hold the bottom of the ladder for added security. Use a ladder to reach the roof, then use the power washer to clean it. Remove any flakes of mold or rust. If there are stubborn rust patches, use a wire brush to removed it. Then, use a warm water and chlorinated bleach solution to clear away any mold and mildew. Allow the roof to completely dry before going onto the next step.

Step 2 - Buy a Primer

Find a primer designed for use on galvanized metal. This will prepare the surface for painting. These prices are solvent based, although there are acrylic based primers available. Speak to the staff at a specialized paint shop for their advice and recommendations.

Step 3 - Apply the Primer

Follow the manufacturer's instructions when applying the primer. Allow the primer to dry completely before painting.

Step 4 - Buy the Paint

The paint you choose for your topcoat will depend on your roof's position and your location's weather conditions. If you have a corrugated metal roof that is exposed to direct sunlight, it will need a different type of paint than a roof that is in a deeply shaded area. When choosing a paint that will work well for your roof, get advice from a paint specialist.

Step 5 - Apply the Paint

Before you apply the paint, carefully read the manufacturer's instructions to check the recommended thickness of each paint coat. In addition, you need to assess the weather conditions. Don't paint the roof if you expect rain within 24 hours. You also want to hold off on painting the roof if the temperature will go below 40 degrees Fahrenheit, during the painting or drying process.

Painting a Tin Roof

Step 1 - Clear Debris From the Roof's Surface

If you paint a tin roof without proper preparation, you'll end up with a roof that doesn't look very good. If you want to get the best results, the roof needs to be clean. Set your ladder against the roof in a central location where a majority of the roof's surface can be reached without needing to move around much. Remove larger debris, twigs, and leaves with a push broom. Then, use a power washer to remove grime and dirt that may be stuck to the roof's surface. This will also remove oil that may have accumulated over the years.

Step 2 - Prepare the Metal

After the dirt, debris, and oil are removed, you need to prepare the tin roof for the paint. One common issue with tin roofs, as they age, is that they can become rusty and worn out very quickly. Rust may be the death of a great paint job. Use a wire brush to remove any loose rust. This will not take much elbow grease or time since you're just knocking rust deposits from a flat surface. Then, use an electric sander and a coarse grit sandpaper to sand over the rusted section of the roof. Use a medium pressure with the sander, moving it in a circular motion. It's unlikely that you'll be able to remove all of the rust, however, as long as the rusted area is flush with the rest of the roof, the painting job will be successful. This method can also remove old peeling or chipped paint.

Step 3 - Paint the Roof

Use a paint that is made for outdoor use on metal. This paint usually contains a metal protector, like Rustoleum. Use a paint sprayer in even passes, move slowly and apply a coat of paint to the length of the roof. Overlap each layer until the whole roof is painted. You may need to hand paint some sections of the roof, since you may not have access to the entire roof with the paint sprayer. To hand paint, you should pour some paint into a tray. There are various paint rollers or paint brushes you can use, depending on your preference and the area you need to paint. If you need to apply a second coat, wait for the first one to dry completely.

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