How To Safely Pressure Wash A Metal Roof

When you clean a metal roof it s a lot different than cleaning tile or asphalt roof.

How to safely pressure wash a metal roof.

Cleaning a metal roof. Rinse the surface well with plain water. Beginning at the bottom portion of a panel section wipe in a left to right motion until clean. We recommend hot water because metal roofs can handle it and hot water is more effective.

The best way to clean a particular metal roof will depend on what type of metal roof it is. When you re ready to get started spray your roof using a garden hose with a spray nozzle attachment starting at the top of the roof and blasting downward so the dirty water runs off the sides. There is a chance that the pressurized water could damage your shingles. This is very effective at getting rid of algae and mildew both of which often grow on metal roofs.

Some of the most common examples include. Pressure washing is very effective but may be best for metal or concrete roofs. Start off with a hot water pressure with a 40 degree tip. Spray this mixture onto the roof and agitate it with a soft bristled brush to get it clean.

Most of these substances can be removed by a mixture of cup tri sodium phosphate and 1 gallon of water. Cleaning la s totally awesome vs. Lightly scrub the surface until the area is free of mildew or mold. If a panel becomes difficult to clean continue rubbing longer but do not increase pressure.

You only need low pressure on metal roofs as it is enough to disturb and clean them. Soak a heavy cloth or sponge with glasswax. How to clean various types of metal roofs. 1 3 cup of powdered laundry detergent 1 quart of bleach 5 solution 3 quarts of water.

Pine sap decaying leaves and even road dirt that s drifted into the air can settle on your metal roof and stain it. To clean a metal roof wait for a dry overcast day and make sure you have a partner to help you for safety reasons. When you clean metal you can use light pressure if necessary and you can use a hot water pressure washer. For years many companies in the roofing industry have advised using a mixture of cup of tri sodium phosphate per one gallon of water.

Dip a soft brush or rag in the cleanser and apply to affected areas. When a panel section is clean rinse the washed panels with fresh water.