Commercial Roof Cleaning: Cost, Procedures & More
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Commercial Roof Cleaning: Cost, Procedures & More!

A team cleans a metal roof

Your commercial building’s roof might not be the first thing that comes to mind when thinking about maintenance, but neglecting it can lead to costly consequences. Commercial roof cleaning is a crucial aspect of property management that often goes overlooked.

In this comprehensive guide, we’ll explore:

  • The importance of commercial roof cleaning
  • What the process entails
  • The potential dangers of neglecting it
  • The cost involved
  • How often you should schedule a roof cleaning

Get informed on the proper steps of roof cleaning, and reach out to the pros when you’re ready to upgrade your roof.

The Importance of Commercial Roof Cleaning

cleaning a metal roof

A clean and well-maintained roof is essential for several reasons:

  • Prolonged Roof Lifespan: A dirty roof can lead to premature deterioration. Algae, moss, lichen, and debris can accumulate on your roof’s surface, causing damage over time. Regular cleaning can extend the lifespan of your roof, saving you the significant expense of early replacement.
  • Prevents Water Damage: Clogged gutters and downspouts from debris and leaves can lead to water pooling on your roof. This standing water can seep through your roof’s protective layers, causing leaks, water damage to the interior, and even structural issues. Commercial roof cleaning ensures your drainage systems are clear and functioning correctly.
  • Maintains Energy Efficiency: A clean roof reflects sunlight more effectively than a dirty one, helping to reduce heat absorption. This, in turn, can lower cooling costs during hot months, making your commercial property more energy-efficient and environmentally friendly.
  • Enhances Curb Appeal: First impressions matter. A clean, well-maintained roof can significantly improve the appearance of your commercial building, attracting customers and business partners. It signals professionalism and pride in your property.

What is Done During a Commercial Roof Cleaning: 7 Steps

Commercial roof cleaning involves a series of steps to ensure a thorough and effective cleaning process:

1) Inspection:

A professional roof cleaning service starts with a detailed inspection of the roof’s condition. This step helps identify any structural issues, areas with heavy contamination, or damage that may require repairs.

2) Debris Removal:

The first step in cleaning is to remove all loose debris from the roof’s surface, including leaves, sticks, and other organic matter. This step ensures that the cleaning solution can reach the roof’s surface without obstruction.

3) Application of Cleaning Solution:

A specialized cleaning solution, tailored to the specific contaminants on your roof (e.g., algae, moss, or lichen), is applied evenly across the entire surface. This solution typically contains eco-friendly chemicals that break down and remove contaminants.

4) Gentle Agitation:

In some cases, gentle agitation using soft brushes or low-pressure washing may be necessary to dislodge stubborn moss or algae growth. Care is taken not to damage the roof’s surface during this process.

5) Rinse and Drainage:

After the cleaning solution has had time to work, the roof is thoroughly rinsed to remove all traces of contaminants and cleaning chemicals. This step also ensures that your drainage systems are functioning correctly.

6) Repairs and Maintenance:

If any damage or issues are discovered during the inspection, these are addressed at this stage. Repairing damaged shingles or flashing ensures the roof’s integrity and longevity.

7) Preventative Measures:

To deter future contamination, some commercial roof cleaning services may apply a protective treatment or coating. This can include anti-algae or anti-moss treatments to prevent regrowth.

The Dangers of Leaving Your Roof Dirty

Neglecting to clean your commercial roof can lead to various problems and risks:

  • Structural Damage: Accumulated debris and contaminants can add weight and stress to your roof structure. Over time, this can weaken the integrity of your roof, leading to costly repairs or even roof collapse.
  • Leaks and Water Damage: Dirty roofs are more prone to leaks, as contaminants can create weak points where water can penetrate. This can lead to extensive water damage within the building, including ceiling damage, mold growth, and health issues.
  • Increased Energy Costs: A dirty roof absorbs more heat, leading to higher cooling costs during warm seasons. Neglecting roof cleaning can result in inflated utility bills.
  • Declining Property Value: A visibly dirty or deteriorating roof can significantly decrease your property’s value. It can also make it challenging to attract tenants or buyers, potentially leading to vacancies and financial losses.

How Much Roof Cleaning Costs

The cost of commercial roof cleaning can vary widely depending on several factors:

Roof Size and Complexity:

The larger and more complex your commercial roof, the higher the cleaning cost. Roofs with numerous angles, slopes, or intricate architectural details may require more time and effort.

Type of Contaminants:

The type and severity of contaminants on your roof affect the cost. Heavy algae or moss growth may require more extensive cleaning efforts.


The region in which your property is located can influence pricing. Areas with higher living costs may have higher cleaning rates.

Preventative Measures:

Applying protective treatments or coatings can add to the cost but may provide long-term benefits by reducing the need for frequent cleaning.

Professional Service:

Hiring a reputable and experienced commercial roof cleaning service is crucial. While it may cost more upfront, it ensures a thorough and safe cleaning process, ultimately saving you money on repairs and replacements down the line.

How Often You Should You Clean Your Roofing System

The frequency of commercial roof cleaning depends on various factors, but generally, it is recommended to have your roof cleaned every 2 to 5 years. However, specific considerations may lead to more frequent cleanings:

  • Climate: Properties in regions with high humidity, frequent rainfall, or significant shade are more susceptible to algae and moss growth. In such cases, more frequent cleaning may be necessary.
  • Surrounding Vegetation: If your commercial building is surrounded by trees or overhanging branches, debris accumulation on the roof may be more frequent, necessitating more regular cleaning.
  • Roof Material: Certain roofing materials are more prone to contamination and may require more frequent cleaning. Consult with a professional to determine the optimal cleaning schedule for your specific roof type.
  • Warranty Requirements: Some roofing warranties may require regular cleaning and maintenance to remain valid. Failing to adhere to these requirements could void your warranty.

Professional Roof Cleaners

Cleaning a shingle roof

Commercial roof cleaning is a vital aspect of property maintenance that should not be overlooked. It not only extends the lifespan of your roof but also prevents costly structural damage, energy inefficiency, and property devaluation. By investing in regular commercial roof cleaning, you can protect your investment and ensure your commercial property remains in top condition, welcoming clients, and tenants for years to come.Remember to consult with a professional roofing service to determine the best cleaning schedule and approach for your specific needs. At Trust Roofing, we have the know-how to provide you with a thorough cleaning that can help extend the life of your commercial roofing systems. Contact us today to get started!

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