How To Safely Pressure Wash A Metal Roof

We recommend hot water because metal roofs can handle it and hot water is more effective.

How to safely pressure wash a metal roof.

The best way to clean a particular metal roof will depend on what type of metal roof it is. Cleaning la s totally awesome vs. Most of these substances can be removed by a mixture of cup tri sodium phosphate and 1 gallon of water. You only need low pressure on metal roofs as it is enough to disturb and clean them.

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. Pressure washing is very effective but may be best for metal or concrete roofs. Some of the most common examples include. Dip a soft brush or rag in the cleanser and apply to affected areas.

Rinse the surface well with plain water. Pine sap decaying leaves and even road dirt that s drifted into the air can settle on your metal roof and stain it. Of course some chemicals can harm your roof as well and the runoff could cause problems with your landscape or parts of your home. If a panel becomes difficult to clean continue rubbing longer but do not increase pressure.

Soak a heavy cloth or sponge with glasswax. When a panel section is clean rinse the washed panels with fresh water. For years many companies in the roofing industry have advised using a mixture of cup of tri sodium phosphate per one gallon of water. To clean a metal roof wait for a dry overcast day and make sure you have a partner to help you for safety reasons.

Spray this mixture onto the roof and agitate it with a soft bristled brush to get it clean. How to clean various types of metal roofs. Beginning at the bottom portion of a panel section wipe in a left to right motion until clean. Lightly scrub the surface until the area is free of mildew or mold.

When you clean metal you can use light pressure if necessary and you can use a hot water pressure washer. There is a chance that the pressurized water could damage your shingles. Cleaning a metal roof. This is very effective at getting rid of algae and mildew both of which often grow on metal roofs.

You can also simply wash it with detergent depending on how accessible the roof is and what its pitch is. 1 3 cup of powdered laundry detergent 1 quart of bleach 5 solution 3 quarts of water.