How to clean roof tiles

Scott Thompson
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How to clean roof tiles

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Project Overview

It is possible to give your tiled roof a facelift just by cleaning it. We’ll teach you how to prepare your roof tiles and show you the safest way to do the cleaning yourself. You will also learn the best way to walk on roof tiles. 
Continue to step-by-step instructions

Step by Step Instructions

1 Prepare to start cleaning roof tiles
2 Use anti-moss spray on roof tiles
3 Clean the roof tiles with a high pressure water spray
  • Step 1. Prepare to start cleaning roof tiles

    There are three pieces of advice worth knowing before you start cleaning roof tiles. Firstly, try and always walk where the tiles overlap as it’s the strongest part of the roof. Secondly, the surface of the roof gets slippery while you are cleaning, so install a safety rail and wear sturdy, non-slip shoes. Finally, you will save a lot of time if you have someone stay on the ground to pass things up to you.
  • Step 2. Use anti-moss spray on roof tiles

    Before you start this step, disconnect any water tanks from the gutters so no chemicals get in to your water storage. Now apply the anti-moss spray across all the tiles on your roof. When you are spraying on a roof, always start on one side and walk backwards away from where you have sprayed. That way you always walk onto a dry tile.
  • Step 3. Clean the roof tiles with a high pressure water spray

    Give the anti-moss spray time to do its job, and then use the high pressure cleaner to wash the tiles down. This will remove all the moss and lichen as well as any built up dirt. As you did in the previous step, walk backwards when you are spraying, away from the wet tiles and onto the dry ones.

Tools and Materials

Tools

  • Extension cord
  • Non-slip shoes
  • Rubber gloves
  • Safety glasses

Materials

  • High pressure cleaner
  • Outdoor cleaner with power sprayer
  • Roof guard rails
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Health & Safety

Please make sure you use all equipment appropriately and safely when following the advice in these D.I.Y. videos. You need to be familiar with how to use equipment safely and follow the instructions that came with the equipment. If you are unsure, you may feel it is safest to consult an expert, such as the manufacturer or an expert Bunnings Team Member.

Grave health hazards are linked to asbestos, which may be in homes built up to 1990. Health hazards may result from exposure to lead-based paints in older materials and copper chromium arsenic (CCA) treated timber. For information on the dangers of asbestos, lead-based paint and CCA treated timber and tips for dealing with these materials contact your local council's Environmental Health Officer or visit our Health & Safety page. You can also use a simple test kit from Bunnings to indicate the presence of lead-based paint.
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