We use a 5 5 gallon system just for this reason.
Phosphate cleaning concentrates for metal roofs.
The chlorine bleach roof cleaning method roof cleaning contractors who use sodium hypochlorite chlorine bleach mix it in high concentrations with other chemicals such as trisodium phosphate also known as tsp.
Keeping your bryan roof clean is a part of normal roofing maintenance.
Phosphates are able to soften water by deactivating water hardness minerals through sequestration holding metal ions or precipitation removing metal ions from solution as insoluble materials.
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.
If there are any stubborn stains.
To ensure a metal roof looks great and performs to the best of its ability regular cleaning of the surface is recommended.
Spray this mixture onto the roof and agitate it with a soft bristled brush to get it clean.
Chlorinated trisodium phosphate is commonly found in cleaning powders and is an excellent cleaning chemical as well.
Most of these substances can be removed by a mixture of cup tri sodium phosphate and 1 gallon of water.
Chlorinated trisodium phosphate is suitable for cleaning steel surfaces or products and a few types of plastics as well.
Tsp can be very difficult to mix hot water is recommended but not needed here is a simple method.
Over the course of time painted metal roofs will appear discolored in areas where dirt and grime accumulate.
Mixing tsp for roof cleaning when mixing the tsp with bleach for roof cleaning you will want to use a pressure washer with the black soft spray chemical injector tip.
It s critical to know the proper products and methods for cleaning painted metal roofing to prevent against premature degradation and damage.
Long term exposure to the sun also creates a chalking effect where the metal appears lightened in color when compared to other areas of the roof.
They spray it on the roof and wait for it to dry and then re apply it several times as needed.
It wasn t so long ago that trisodium phosphate tsp was a go to choice for tough cleaning jobs especially on exteriors.
To clean a metal roof wait for a dry overcast day and make sure you have a partner to help you for safety reasons.
Pine sap decaying leaves and even road dirt that s drifted into the air can settle on your metal roof and stain it.
It is used as a bleach and disinfectant similar to sodium hypochlorite.