How To Clean Metal Roof Before Painting

Mix water and mild detergent for stubborn areas.

How to clean metal roof before painting.

Soak a heavy cloth or sponge with glasswax. Tsp is available in most paint or home improvement stores. 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 rag to apply to affected spots and use circular wiping motions.

Opt for something soft to protect your roof s paint and parts. When a panel section is clean rinse the washed panels with fresh water. If a panel becomes difficult to clean continue rubbing longer but do not increase pressure. For every part water combine 0 05 part mild dish or laundry detergent.

Use a cloth or sponge to clean. 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. Most of these substances can be removed by a mixture of cup tri sodium phosphate and 1 gallon of water.

Remove the particles or pieces that are causing the rust stains. To remove severe rust stains. To remove difficult algae spots use only a wet cloth sponge or low pressure washer. Then rinse the area with water thoroughly.

Spray this mixture onto the roof and agitate it with a soft bristled brush to get it clean. Now take a soft brush dip it into the solution and start scrubbing the areas affected by mold and mildew.