How To Clean Metal Roof Before Painting

Now take a soft brush dip it into the solution and start scrubbing the areas affected by mold and mildew.

How to clean metal roof before painting. Spray this mixture onto the roof and agitate it with a soft bristled brush to get it clean. Use a rag to apply to affected spots and use circular wiping motions. 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.

Repeat this process until the area is free of mold and mildew. Then rinse the area with water thoroughly. To remove difficult algae spots use only a wet cloth sponge or low pressure washer. 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.

Use a cloth or sponge to clean. Pine sap decaying leaves and even road dirt that s drifted into the air can settle on your metal roof and stain it. When a panel section is clean rinse the washed panels with fresh water. To remove severe rust stains.

For any areas that don t wash away with pressurized water fill a bucket or other container with water. Beginning at the bottom portion of a panel section wipe in a left to right motion until clean. Remove the particles or pieces that are causing the rust stains. Tsp is available in most paint or home improvement stores.

Mix water and mild detergent for stubborn areas. If a panel becomes difficult to clean continue rubbing longer but do not increase pressure.