Wear and tear from the elements can be hazardous to your metal building. If there's any exposed metal, it's at risk of corrosion. One of the best ways to protect your new metal structure is to cover it with a coat of paint. Luckily, painting metal isn't as hard as you might think. You just need to make sure that the surface is prepared correctly. Here's a look at what you need to know to get the job done.
What Will You Need?
To prepare the surface, you'll need either a sandblaster or a power sander. You're also going to want a wire brush, a primer that's designed for metal applications and a rust-proof outdoor paint. Opt for paint that you can put into a large pressure sprayer so that you can distribute the paint evenly over the surface of the building. You should also invest in some painter's tape and newspaper so that you can cover windows, vents and other areas that you don't want covered in paint.
How Do You Paint the Building?
The first step to painting the building is to eliminate any dirt or residue on the surface of the metal. If there's existing paint or a clear coat on it, you can remove it with a sandblaster and a gentle blasting material. Otherwise, use a power sander with medium-grit sandpaper. Cover the whole surface so that it's clean and smooth.
Once you've prepped the surface, it's time to cover the windows and vents. Cover those areas with newspaper, and tape the newspaper in place with painter's tape. It's the best type of tape to use for this, because it comes off without leaving any residue behind.
Once everything is covered, put the primer into your paint sprayer. Apply an even coat of primer across the entire surface. Move the sprayer in a slow, consistent manner so that you don't end up with any runs, drips or heavy coats. Let each coat dry according to the primer manufacturer's recommendations and apply the number of coats that it suggests.
When the primer is dry, it's time to apply the paint. Use the same application method with the paint sprayer so that you get a smooth, even coat of paint on the walls as well. Opt for a day that has minimal wind or breeze, otherwise you'll have a lot of overspray and uneven coatings. Finish the whole thing up with a clear coat if your outdoor paint doesn't have a built-in clear coat.