How much does roof cleaning cost?

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Price guide

$350 - $850

low

$350

median

$450

high

$850

Low, median and high bar chart distribuiton

The average price of roof cleaning is $35 to $50 per hour. But it's also dependent on your location, so a price of $90 is possible depending on where you are. 

Keep in mind that the final cost for your roof will ultimately depend on the quotation handed over to you. To help you prepare, we have created this price guide for you to refer to.

What are the different types of roofs?

Before you get started on the cleaning methods, you must know the type of roof you have in your home. This will significantly help you estimate exactly how much it costs to have your roof cleaned and greatly assist your budgeting. 

To measure the area of your roof, take the length and the width and multiply the collected values. You can then refer to the ballpark figures in the chart below to get a sense of how much it is to clean your roof:

Roof type

Description

Terraced

A roof that has an adjacent flat grounding area ideal for resting 

Gable roof (semi-detached or detached)

A roof containing two side slopes and a gable towards the end


Hip roof (semi-detached or detached)

A roof that has no vertical ends due to the equally upward sloping ends of the structure


before and after roof cleaning

What areas of the roof should be cleaned?

There are three essential roofs parts you should know about.

Gutter

The gutter is a trough located below the edge of the roof. Its primary purpose is to catch rainwater and ensure it flows down to the ground instead of leaking in parts where water does not belong. But like all parts, it has to be cleaned too. 

Experts share that you should clean gutters at least every two years. But if you live near areas with trees, foliage can often get caught in the gutter. A quick sweep-through can be done every three months for good maintenance. If you want an expert's eye, you can contact someone specialising in gutter cleaning nearest your area. While prices vary, roof gutter cleaning costs $90 to $200 on average.

Roof cavity

The roof cavity is the space between your roof and the ceiling. But like the other parts of the house, it can also be host to several environmental elements that invite dirt, dust, and eventual damage.

Since the cavity is an internal part of the roof, opening and sealing the roof afterwards should be considered part of the cost. In addition to the average cleaning cost of $60 to $90 per area square metre, the average cost of sealing a roof can range from $7,000 to $12,000.

Roof cavities don't have a specific timeframe for when they need cleaning because this already calls for automatic replacement. It is best to have an expert look at the roof and assess if you need to have your roof replaced. 

Roof tiles

Tiles primarily protect your roof from elements of nature. Like all roofing parts, they need extra care. The best way to clean your roof tiles is by scraping them with a trowel, which helps remove moss from the gaps between them. Experts do not have a specific timeframe for maintenance, but it's best to clean the tiles regularly as they are the most exposed part of the roof. 

What are the kinds of cleaning methods available? 

Now that we have convinced you to kick off your roof cleaning journey, you also have to assess the different kinds of cleaning methods available for you to choose from. Depending on the type of roof you have and the kind of results you want, here are the top 5 most common cleaning methods:

Cleaning methods

Description

Manual wash and scrub

A gentle cleaning method that targets moss removal

Pressure wash

A high-pressure hose is used to wash the roof thoroughly; it can damage the roof if not done properly

Chlorine bleaching

This method utilises cleaning using chemicals like chlorine and sodium percarbonate 

Roof blowing

Uses an air blower to get rid of dirt off the roof

Air washing

A gentle roof cleaning method wherein air is utilised to get moss off the roof gutter

 

Keep in mind that the cost will still vary depending on the roof and the area it takes up in your home. 

When should you have your roof cleaned? 

Before anything else, there must always be a purpose for why you are having your roof cleaned. For your budget books to make sense and pencil in this task, you must identify when to ring up the experts. 

Generally, experts share that it is good to have your roof cleaned at least yearly. But if you cannot wait that long or have waited beyond that recommended period, here are three reasons you need to get started.

Roof shingle protection

Roof shingles are a covering your roof has that is made up of overlapping parts. Extra protection is required for shingles made of asphalt. Asphalt shingles, in particular, are prone to quickly attracting mildew and moss. 

Mildew and moss, especially when they multiply in number, can negatively affect the quality of your shingles and can then affect the whole roof. So if you notice that your shingles are slowing down in terms of their purpose, it is time to call roof cleaning experts. 

Save on your electricity bills

A clean roof is not only a manifestation of good home maintenance but also can help you cut back on your utility expenses. Aside from protecting the house from outside elements, roofs help regulate temperatures within the house or flat. Terrible quality roofs provide less regulation and will therefore raise the heat level. 

While this serves a better purpose for winters, heat waves are as much of a bother, and you may find yourself switching on the air conditioning more often. So if you feel like your roof needs a clean break, by all means, get on it. 

Improve the overall quality of your home

There are two schools of thought that come with a clean roof. First, the visual aesthetics of your place will shoot up by a mile because who doesn't love a well-organised exterior? Second, insects and dirt will most likely stay away from a clean roof, mainly because you have maintained it well.

a roof cleaner on the job

Should you have your roof cleaned or replaced?

While we have been talking about getting your roof cleaned, there is a huge difference when the stains no longer come off. What’s worse, the roof is near falling apart, almost dilapidated, and scrub cannot save it from further damage. 

According to experts, different materials elicit different time frames. Here are just some of the common roof materials and their expectancies:

Cleaning methods

Average life expectancy

Asphalt shingles

15 - 30 years

Wood shingles

20 - 25 years

Rubber roof

30 - 50 years

Metal roof

50 - 75 years

 
While these are the average length of roofs, several environmental and aesthetic factors come into play and may either lengthen or shorten their expectancies. So how do you know whether you need to replace your roof? Here are three signs:

It's in the age

Sometimes, the roofs don't have to fall apart to show their age. While it may seem like more of a relief at first, non-evident roofs may catch you off guard. You wouldn't want things to fall apart spontaneously, right? So before the roof falls on your head, ring up a professional to install a new roof right away.

Damaged shingles

While there is still a way to save your shingles, you need to remember that damaged shingles can bring many negative things to your place. It will affect proper temperature regulation within your home and also invite a lot of moss and dirt – two things that will bring further damage. Avoid shelling out extra funds and have an expert repair your roof as soon as possible.

Granule damage

If you look at it this way, we are combatting only one enemy, and that is moss. Moss can present multiple forms of damage, and granules are one of them. Granules are your weather shield and help your roof withstand the elements of nature. So if your granules are damaged or loosened, whether from age or moss, it is time to hit up a specialist.

Whether manual scrubbing or soft wash roof cleaning, costs vary depending on the roof type and the cleaning method used. Avoid shelling out more than you need by hiring a professional to get the job done. Simply put up a task on Airtasker, indicate your needs and budget, then receive offers from roof cleaners in your area in minutes!

Price guide

$350 - $850

low

$350

median

$450

high

$850

Low, median and high bar chart distribuiton

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Roof cleaning FAQs

While using a pressure washer is indeed a quick way to get rid of dirt, the slightest mishap by a beginner or someone with little expertise could cause further damage to your roof. It is still best to consult an expert to assess which cleaning method is best for your circumstances.
While we encourage you to be hands-on with the roof cleaning processes, it is still best to have an expert to help you determine how best to handle your situation. Not only will it cost you less in the long term, but you also do not have to expend extra time from your schedule to learn how to do it.
While using a pressure washer is indeed a quick way to get rid of dirt, the slightest mishap by a beginner or someone with little expertise could cause further damage to your roof. It is still best to consult an expert to assess which cleaning method is best for your circumstances.
While we encourage you to be hands-on with the roof cleaning processes, it is still best to have an expert to help you determine how best to handle your situation. Not only will it cost you less in the long term, but you also do not have to expend extra time from your schedule to learn how to do it.

It's free and takes only a minute.