Moss is sometimes desirable in a garden or yard because it adds texture and character, however, it is often unwanted on a deck. It becomes slippery when wet and often hides the natural look of wood. Depending on the type of moss growth on your deck, its thickness and the type of wooden deck you own, there are different techniques and practices to safely remove it. Moss removal maintains the look of your wood deck and enhances its visual appeal. It also will create a safer environment for your family.
Non-herbicidal Procedure - For others concerned about adding chemicals to the environment and potentially to their groundwater, other options are more suitable. Moss can be removed using a plastic scraper, the kind used to apply drywall joint compound. Slide the scraper over the affected area, gouging and lifting the moss up and off of the wood deck. Holding the scraper flat and flush against the wood deck, push forward in short choppy motions until the moss comes up and free from the deck. This prevents harm to the deck and provides the fastest means of removing the moss. Use a stiff outdoor brush to push the moss from the deck. Then rinse and clean the deck surface with a softer brush, being careful not to damage the exterior stain or wood.