How to clean green marks off your fence

Never allow the solution to dry, and use the garden hose to rinse before approaching the wood with the pressure washer on a low setting.

Move the sprayer in a slow, sweeping motion from half a metre away, and wash off the remaining algae and mildew.

The fence will then need to completely dry before treatment.

For finishing touches, gardeners should sand it down and apply a wood preservative.