Are your roof tiles ready for cleaning?

By promise Twinamukye

The first day after installing tiles on the roof, all that’s left of you is proud. The elegance they bring to the structure is second to none. But a few years later, mold grows and in no time the roofed area of ​​the house looks like the shadow of its past.

Cleaning is therefore convenient, especially if you want to extend its lifespan. It focuses on killing and removing any algae or moss that may have grown on the tiles (shingles).

This is mainly because algae and moss usually build up over the roof, which affects the performance of the tiles or even shortens their lifespan.

Most roof tiles are made with limestone and some asphalt components. These chemicals allow moss and algae to grow comfortably on the tiles, requiring them to be removed if they are seen. This emerges from the perspective of the Asphalt Roofing Manufacturers Association (ARMA), a trade association that represents North American asphalt roofing manufacturers and their raw material suppliers.

According to Yani Avramidis, vice president of Long Roofing, moss has the ability to retain moisture and wick away water, causing the wood to rot and leak. Due to the fact that they tend to grow in the slots between the tiles, it takes quite a long time for the absorbed water to evaporate.

Benefits of roof cleaning


You can extend the life of your roof tiles by removing any moss and algae that would eat away your tiles if they did.

The house stays clean and attractive. This is because the roof takes up one of the largest parts in house construction. For real estate workers, a roof can determine whether or not a person buys a home. Keeping it clean keeps you proud of your house.

However, cleaning also has its own shortcomings if not done properly. You can also destroy your roof during cleaning.

Pressure washing your roof may remove all of the remaining moss, but it also has flaws. This is because your tiles can be damaged by pushing the water under the tiles. This will cause the brick to loosen in the attic it was attached to and it is more likely to blow off in strong winds.

This can cost you a lot in the long run when you need to replace the tile or do expensive repairs.

Hiring a professional cleaner is a better option in this case as most contain a cleaning solution that will kill the algae or moss and keep the roof away from them.

Do-it-yourselfer or professional?

As much as you can wash your own clapboard, it’s pretty risky up there. If you are not careful, you can also unknowingly damage the roof. So it is better to employ professionals with the correct safety equipment and know how to avoid damage to the roof.

According to Saul Mpindi of Mpindi Reality Properties, they sometimes use detergents that contain chlorine bleach to kill the fungus. However, you need to be sharp enough to make sure it doesn’t spread near other necessary plants as the detergents can be inconvenient for them too.

While some water and cover the plants first before starting the cleaning process, others are just careful with the water and cleaning, making sure it doesn’t spread elsewhere.

Other cleaners only use water if the chemicals remain in the gutter. “Most homeowners collect water for home use when it rains through the gutter. If chemicals are lurking in the gutter, it can be a threat, ”said an employee of Best Choice, a cleaning company.


While some cleaners will charge you per square meter, others will give you a quote for the entire roof.

Companies also vary. While some clean for an average price of Shs 3,000 per square meter, others do it for Shs 30,000.


It is best to leave the cleaning of a roof to a professional cleaning company. You have the right materials to work safely and not damage the roof. Think of scaffolding and the mandatory safety devices. Another reason to choose a roof cleaner is knowledge of cleaning products. Each type of roof tile requires specific treatment. If cleaning agents that are too stubborn are used, the roof tiles lose their protective layer. This could lead to even more moss formation and damage.

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