Monday, June 15, 2009
Cleaning A Metal Roof
This is probably the most frequent phone call we get..."How do I clean my metal roof?" It's a great question, and one of the most important steps you can take to ensure the longevity of your investment. Roofs must be regularly washed, either by fresh rainwater or by cleaning with a light cleaning solution. The roof must not be cleaned with abrasive or chemical cleansers. One third (1/3) cup of a common laundry detergent (such as Tide) containing less than 0.5% phosphate dissolved in (1) gallon of water will work. You can use a soft bristled brush, like a long handled RV brush, to get the "sticky" stuff loosened. Light pressure washing may be enough to do the trick - but keep in mind the word LIGHT! Keep valleys and areas around screw heads clear of pine needles and debris build-up. While you're up there, cut back any vegetation from overgrown trees and bushes so nothing is resting on the metal roofing. Remember to use proper safety gear when on your roof, keeping in mind wet metal can be very slippery. Proper maintenance is a requirement to keep most warranties in effect. If you have a metal roof with a granular surface, check with the manufacturer for specific cleaning instructions.