Roof cleaning

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The roof cleaning of fiberglass shingles
Streaking on a roof.
Roof cleaning being performed using a soft-wash system

Roof cleaning is the process to remove dirt, algae[1] and moss from roofs.[2]Roof cleaning can extend the duration of a roof's ability to function.[2] Algae and other types of build-up often form on parts of roofs that are shaded, and can reduce a roof's life expectancy.[2] The presence of soot, dirt, or biomass can affect how much sunlight is absorbed by a roof and thus the amount of heat a building absorbs.[3] Cleaning may be accomplished with a bleach or vinegar solution, various cleaning products or commercial cleaning services. The addition of zinc strips near the roof's peak may reduce the regrowth of algae and moss.

Cleaning apparatus[edit]

Roof cleaning devices may use high-pressure water spray and revolving brushes, and some may have extensions to enable their use from the ground.[4] Roof cleaning devices exist that may minimize the spread of airborne radioactive materials (in contaminated areas) and other harmful materials, such as asbestos.[4] Specialized robots have been designed to facilitate cleaning roofs.[5]

See also[edit]


  1. ^ Brook, Alan J. (1968). "The Discoloration of Roofs in the United States and Canada by Algae". Journal of Phycology 4 (3): 250. doi:10.1111/j.1529-8817.1968.tb04722.x. 
  2. ^ a b c Fox59 4:34 p.m. EDT, August 28, 2012 (2012-08-28). "Stretching Your Dollar: Cleaning your roof for a good price". Retrieved 2012-09-20. 
  3. ^ Levinson, Ronnen; Paul Berdahla; Asmeret Asefaw Berheb; Hashem Akbaria (December 2005). "Effects of soiling and cleaning on the reflectance and solar heat gain of a light-colored roofing membrane". Atmospheric Environment 39 (40): 7807–7824. doi:10.1016/j.atmosenv.2005.08.037. Retrieved 18 April 2013. 
  4. ^ a b Airborne Radioactive Contamination in Inhabited Areas - Kasper G. Andersson - Google Books, pp 223 - 229.
  5. ^ Elkmann, N; Felsch, T.; Sack, M.; Saenz, J.; Hortig, J. (2002). "Innovative service robot systems for facade cleaning of difficult-to-access areas". Intelligent Robots and Systems, 2002. IEEE/RSJ International Conference on 1: 756–762. doi:10.1109/IRDS.2002.1041481. Retrieved 18 April 2013.