Most people don't realize that the strange discoloration or patches of black that may be developing on your reed fencing are mold and fungus. This is caused by moisture buildup on the surface of the wood and can be easily cleaned up and your fence restored to its original condition.
If your fence is not developing these types of symptoms, it will be even less work to prepare and stain your fence to a new color, which will also seal it from future mold growth. Adding extra coats or layers of weather sealant, once the fence has been stained, can help prevent future damage to your fence by rain, ice, snow, and insects.
Step 1 - Clean the Fence Surface of Mold and Residue
If you have mold and buildup issues with your reed fencing, you will first want to clean this up and get it removed before you can begin to apply the stain. You can clean up the fence by using a bleach and water mix and applying it to the fence in any discolored areas that you find.
If you do have some mold growth, you will want to treat those areas the most, and also clean the unmarked areas to prevent if from spreading. Once you have cleaned the entire fence, on both sides with the bleach mixture, you want to let it dry.
The bleach can become a reactant if mixed with the wrong chemicals, do not add other types of cleaner to your bleach mixture to avoid bodily harm or injury, from volatile gases.
Step 2 - Apply Stain with a Brush or Wet Rag
Once the reed fencing has dried, you are then able to begin the staining process. You will want to use the stain as a rub more than paint as you are applying it. The way to do this is to get a stain on a rag, and slowly rub it into the wood, starting from the bottom of the fence.
As you go, rub the excess stain into the wood, heading in an upward motion. If applied too thick, it will cause the stain to blotch or spot the surface, causing irregular blotches in your fence color.
The stain should be absorbed by the fence as you go, and the slower you apply this to the wood, the more even the finished product will appear. Continue applying the stain, going from panel to panel, starting at the bottom and working your way to the top, on both the front and back of the fence.
Step 3 - Apply the Water Sealant
Once you have the reed fencing stained, you will want to apply a good water sealant clear coat over the fence. This is going to prevent future mold and fungus growth from developing and keep pests from chewing into the wood, destroying the fence.
The sealant should also be applied liberally as you go, to prevent blotches or streaking on the surface. Allow the fence to dry for 24 hours and you can then add a second seal coat to the fence to help against the weather's effects on it over time.