How To Pressure Wash Metal Roof

Cleaning a metal roof.

How to pressure wash metal roof.

You can also use a mild detergent solution in place of plain water if your roof is in particular need of a more intense wash. Pressure washing is very effective but may be best for metal or concrete roofs. This is very effective at getting rid of algae and mildew both of which often grow on metal roofs. However keep the concentration of the detergent at its minimum.

For every part water combine 0 05 part mild dish or laundry detergent. As you spray keep the distance of the pressure washer nozzle uniform across the roof. To remove severe rust stains. Opt for something soft to protect your roof s paint and parts.

Start off with a hot water pressure with a 40 degree tip. Use a cloth or sponge to clean. We recommend hot water because metal roofs can handle it and hot water is more effective. Pine sap decaying leaves and even road dirt that s drifted into the air can settle on your metal roof and stain it.

You only need low pressure on metal roofs as it is enough to disturb and clean them. There is a chance that the pressurized water could damage your shingles. Use a rag to apply to affected spots and use circular wiping motions. Of course some chemicals can harm your roof as well and the runoff could cause problems with your landscape or parts of your home.

For years many companies in the roofing industry have advised using a mixture of cup of tri sodium phosphate per one gallon of water. For any areas that don t wash away with pressurized water fill a bucket or other container with water. 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.

5 parts water 1 part diluted hydrochloric acid or citric acid or muriatic acid or oxalic acid or vinegar. Mix water and mild detergent for stubborn areas.