Before painting, remove the mold. Otherwise, the new paint will not succeed or be cleaned, because it cannot stick to the surface.
Professional cleaning products use various methods to clean the surfaces of the mold. Some cleaners mix the chlorine solution, spray it on the surface and allow to dry without rinsing. This leaves the mold spore in powder form to remain. Other cleaners use a solution of chlorine, and then washed with high pressure water to remove dirt and residue. Finally, others use a solution of chlorine with a small amount of sodium phosphate (TSP) or another commercial cleaner and rinse with high pressure water.
You can use the following formula. However, it is dangerous for the eyes and irritates the skin. If the solution comes into contact with the eyes, flush the eyes with clean water and seek medical attention immediately. Use of protective eye glasses is required. Prolonged exposure to this solution increases the sensitivity and possible infection. Use a ladder to reach high areas to minimize the impact on the cleaning solution.
Water 64 ounces or 2 quarts
Three Phase Phosphate (TSP) 2/3 cup
Detergent (soap for washing, etc.) 1/3 cup
Chlorine 5% (household bleach) 64 oz or 2 quarts
Place the water in the mixing container. Add TSP and detergent to the water and stir until the ingredients are dissolved. Add chlorine and mix the mixture.
TSP is a powerful detergent to remove dirt and mold / mold residues. The cleaners helpers mix the TSP in water and keep the solids suspended until they are removed with a flushing spray. Chlorine is an ingredient that destroys the spores of fungi / mold.
The cleaning solution can not be diluted during application - to apply fully. To do this, you can use the spray type garden pump. Using a garden hose sprayer using fresh water will dilute the solution to reduce strength. Sprayers for garden pumps, made mostly of plastic, are preferred. Spray should be cleaned immediately after use, otherwise any metal components will be corroded.
Any valuable plants should be protected from the cleaning solution. Before cleaning, the plants should be watered with fresh water and then rinsed with fresh water immediately after using the cleaning solution.
Before applying the cleaning solution, the painted surface must be dry to get the maximum benefits. Any existing moisture on the surface prevents the penetration of the solution, and also dilutes the concentration.
Apply cleaning solution from the lowest level and process upwards. Spray an area between six and eight feet wide and move up to the top before moving into the next area. Repeat the procedure in the adjacent zone. Work from top to bottom will lead to a strip of cleaned surface after drying.
The cleaning solution should remain wet for 10 minutes and do not allow it to dry before rinsing. Repeat the procedure if necessary. Application in areas of shock will prevent premature evaporation. Re-wetting will be required in sunny areas.
While the surfaces are wet, additional use of a brush, brush, or sponge with a long handle will help clean or displace dirt or debris. The mold / mold will be killed even if this step is not completed.
Finally, rinse with water until the remaining detergent remains on the surface (slippery sensation on the surface).
