How To Clean A Metal Roof Before Painting

Use a rag to apply to affected spots and use circular wiping motions.

How to clean a metal roof before painting. To remove algae and moss growth from the roof dissolve one cup of ammonia for every 5 gallons of water used and work from the top to the bottom. Remove the particles or pieces that are causing the rust stains. Tsp is available in most paint or home improvement stores. For any areas that don t wash away with pressurized water fill a bucket or other container with water.

Use a cloth or sponge to clean. To remove severe rust stains. Then rinse the area with water thoroughly. Now take a soft brush dip it into the solution and start scrubbing the areas affected by mold and mildew.

Repeat this process until the area is free of mold and mildew. For every part water combine 0 05 part mild dish or laundry detergent. Opt for something soft to protect your roof s paint and parts.