Typically customers don t see lichen regrowth for up to a year.
Lichen roof wash.
Since pressure washing can degrade your roof s protective coating it is not a recommended method for removing lichen.
The roof growth gave character to many seaside and forest cottages.
And you may need to clean the roof once in a while.
If you opt to power wash your roof and remove the lichens or moss you should use the proper equipment and a mild detergent rather than a heavy abrasive cleaner.
You can even extend the life of your outdoor surfaces by properly removing lichen with wet forget.
You can remove moss and lichens from your roof by using vinegar as a environmentally friendly weedkiller.
Wet forget is a safe roof cleaner that will remove lichen without any scrubbing or scraping.
Also mold growth can occur underneath your home s siding and get into the inner walls from a forced water source.
Twenty years ago i bicycled about 500 miles along the oregon northern california coast and marveled at the number of asphalt shingle roofs carpeted with lichens and moss.
Step 1 clean up any organic matter on the roof such as twigs leaves or other debris.