Any fencing contractors will tell you that one of the key reasons Colorbond fencing is so popular is that, compared with other fencing options, it requires minimal maintenance once it's up and running (well, not running… standing). Still, there are a few minor things that you can do to stay on top of the upkeep of your fence, which we'll discuss in this article.

1. Give it a hose. First of all, it's important that you hose the fence down regularly. This is mostly to remove the cobwebs that tend to build up on Colorbond fencing which can eventually make the fence lose some of its great looks. Of course, a good bout of rainfall is just as effective in this regard and you won't have to worry about the water damaging the fence.
2. Remove soil build-up. While water striking the fence due to hosing, sprinklers or rainfall won't do any damage to your Colorbond fence, if the fence is in continuous contact with water for weeks and months on end, the metal can start to corrode. One of the most common ways for this to occur is if excess soil builds up at the bottom of the fence, as the soil retains water. You'd be well-served by grabbing a shovel and ensuring the soil levels remain low at the base of the fence. Under no circumstances should Colorbond be used as a retaining wall -- it is not designed for this purpose.
3. Avoid rainfall pooling. Additionally, rainfall may have detrimental effects if it pools at the base of your Color bond fencing. The best way to fix this is to ensure adequate drainage by having small holes in the bottom rail. Ask your manufacturer about this and ensure they have pre-punched holes to solve this potential problem. If your Colorbond fencing doesn't have these holes, contact a fencing contractor to fix the problem.
4. Don't use fertilisers. Take care not to spray the fence with garden sprays or fertilisers, as this can be very damaging to Colorbond fencing.
5. Touch-up paint: Give it a miss. It's strongly recommended not to use touch-up paint on your Colorbond fencing in the instance of minor scratches. Colorbond's manufacturing process gives it its colour and gloss retention properties; because of these properties, the surface is known to weather a little differently to air-drying paint. Basically, if you decide to touch up your fence, you may be left with an unsightly, blotchy look.
6. Paint is okay, though. If you do need to repaint your fence, however, you can do so with regular paint. Give it a good clean first by mopping with a soft bristle brush, and make sure you hose the surface down with water and then let it dry. Once the fence is completely clean, you should go over it with quality water-based exterior acrylic. Two coats is the recommended amount. Bear in mind, however, that this will void your warranty with Bluescope.
7. The graffiti problem. There's nothing worse than stepping out to your front garden to see that your beautiful fence has been vandalised by graffiti artists. Obviously, you'll want to take steps towards graffiti removal, but when doing so, you don't want to void your warranty. BlueScope allows you to use graffiti remover, but it must be done according to BlueScope's guidelines. Specifically, you should use Du-Pont graffiti remover, and make sure you follow the directions on the package. Du-Pont can be bought from any Bunnings.