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Debris, mould, and pollution can stain white roofing. It’s a smart idea to get your roof professionally washed to make the most of the sun’s reflecting rays and to improve the appearance of the white roof.

Professional White Roof Cleaning

White membrane single-ply roof systems should be cleaned at least once a year, according to roofing manufacturers. UV rays and intense heat destroy materials more rapidly than anything else. Maintaining the cleanliness of these roofs would ensure maximum reflectivity and a cooler substrate.

Why You Need To Clean Your White Roof

Roof checks should be done at least twice a year, according to white roof manufacturers. Maintaining a clean and debris-free roof helps you to spot possible problems before they turn into expensive leaks or repairs down the road.

How to Clean White Membrane Roof Systems

You should follow manufacturers’ guidelines. Most importantly, do not let anyone use high pressure on your TPO or PVC roof. Well, how often should you clean a low-slope roof? It is determined by several factors, including the severity of environmental pollutants, rainfall amount, the likelihood of dirt and dust accumulation, and roof slope and drainage characteristics.

How to Clean White Membrane Roof Systems

Contractors should follow these instructions when cleaning white roofing membranes:

  1. When using a pressure washer, cover any low curbs, base flashings, or other points where water could reach.
  2. Keep trees, shrubbery, and exterior facades safe from cleaning solution run-off.
  3. Clean and rinse the top layer of dust and debris with a low-pressure power washer (2,000 psi or less).
  4. Clean the surface of the roof membrane with a soft-bristled, long-handled brush or floor broom and a cleaning solution made up of a mild, non-abrasive household detergent and water, being careful not to damage the membrane’s top surface.
  5. Use the low-pressure power washer to fully rinse the cleaning solution off the roof.
  6. Inspect the membrane for damage and repair any incidental damage.

White Roofing Pretreatment

An annual maintenance program will often remove the need for chemicals or soaps. If you have a lot of dirt or algae, it’s a good idea to use an environmentally friendly, PH-neutral soap to clean these areas first. This will aid in the removal of stains and allow for the use of a low-pressure cleaning system that is both safe and efficient. Cleaning white roofing with strong acids and caustics is not recommended.

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