The best long term solution.
Moss out roof strip.
Lilly miller moss out.
Are the same as moss b ware but the texture and delivery system are different.
When it rains water will pick up the particulates in the zinc and deposit them along the roof preventing more moss from growing.
Like moss b ware moss out.
Zincarmor 3 wide zinc strip 99 5 1 roll of 50 feet prevent algae moss lichen fungus mildew zincarmor is specifically designed to inhibit the growth and formation of moss algae mildew and fungus on roofs concrete asphalt and other surfaces where build up and growth can occur.
Roll out the zinc strip underneath a course of shingles allowing roughly half of it to be exposed and the other half underneath the shingles.
From lilly miller is 99 percent zinc sulfate monohydrate.
The active ingredients in moss out.
Is more granular and less powdery than moss b ware and this makes it easier to shake out onto the roof.
When it rains water flows over the metal strips leaching out moss retardant zinc particles which attach to roof shingles and or tiles to stop new moss from forming.
Stop a moss problem from returning by installing strips of zinc or copper coated sheet metal just below the top ridge on both sides of the roof.
Copper is more toxic to moss and algae but zinc.