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How To Remove Mold From Your Rooftop


When your roof is full of mold, you can’t be comfortable to stay in your home. What might look like an external problem could already be inside the ceilings.  Mold is  associated with moisture and can lead to fungal and bacterial infections if not treated in its early stages.

Mold is particularly common, especially on rooftops that are near tall trees. Apart from leaves and debris falling on the roof, mold also forms due to the moist conditions throughout the year. The worst thing about mold is that it can shorten the lifespan of your roof shingles or tiles. If you're struggling with mold at your property fear not! The team at Bricks+Agent have pulled together the following steps to help you remove mold from your roof once and for all. 

STEP 1 - Consider protecting your plants and soil

When you plan to remove mold from your roof, keep in mind that you are going to use chemicals which might spread in your garden. If harmful chemicals such as bleach were to come in contact with plants and/or vegetable gardens, it won’t be safe for you to consume the food. Ensure you protect them by splashing the plants that are close to your house with water. That will protect them from the bleach solution that you are going to use on the roof.


STEP 2 - Apply bleach solution to the roof

Before applying any bleach solution on top of your roof, its important that you wear a protective mask on your nose and gloves. Bleach fumes can be harmful if you inhale them or when they get in contact with your skin.

Take a 4 litre bucket and add 1/4 cup of chlorine bleach and 3/4 cup of water. You can also add a spoon of trisodium phosphate and mix them. Put the solution in a pump sprayer and use it to spray your roof shingles or tiles.


STEP 3 - Let the solution soak and rinse it

After spraying the rooftop, let the shingles or tiles soak for 15 minutes before cleaning. Rinse it thoroughly but ensure that the pressure is low. You should rinse the rooftop starting from the peak of the roof and make your way down. This will reduce the chance of water seeping. You can confirm if there is any mold left by running your hand over the shingles or tiles. If there is, you will notice a slimy texture. In case you feel any, apply the de-molding agent once more and let it soak for 10 minutes before rinsing it again.

STEP 4 - Allow the roof to dry

You need to let the roof dry thoroughly after the cleaning process. Even if you notice that the roof is still slimy after cleaning it, let it dry first before repeating the cleaning process.

If you are cleaning asphalt roofs, you may not want to use chlorine because it has a high content of sodium and it can damage the material. Use other alternatives such as sodium hydroxide or lye. Not a fan of chemicals? There are many different products free of bleach, and you can make an informed decision when buying them.

Have you got a mold issue and in need of a professional? Industrial cleaners are equipped to remove mold from rooftops, ceilings and much more. Find a cleaner by posting your job to Bricks+Agent's homeowners hub for hiring property professionals. Like the article? Sign up to our monthly newsletter below. 

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Topics: How To, Repairs & Maintenance, Property Advice

Rafael Niesten

Written by Rafael Niesten

In his early 20s, Perth local Rafael Niesten, won a scholarship to study in Canada, with that came the opportunity to volunteer at a local radio station. That spawned his entrepreneurial streak, returning to Perth in 2001 he set up community radio Groove FM. More by luck than design, they became successful, too successful as they took a significant chunk of the Perth Market. This sent up the red flag with his commercial competitors who saw to it that he came before the Australian Broadcasting Authority and on technicalities such as the number of volunteers he was forced to move on. He received the citizen of the year award for Western Australia (youth) and was a finalist in the Australian of the year awards (Youth). Falling on his sword he turned to running small and large scale events, all the while buying, renovating and selling properties. Buying and selling land and renovated houses provided a grounding in the property industry. He founded a cloud based medical grade voice recognition company, followed by co founding the first true cloud application for private practice in the health sector. He successfully exited these ventures at the end of 2016 and began building Bricks+Agent.

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