How to install aluminium windows

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How to install aluminium windows

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Project Overview

Aluminium windows are durable, low maintenance and resistant to Australia’s extreme weather. They’re also easy to install. We’ll tell you how to measure up the window and safely put it into place, as well as give you a handy time-saving tip to make sure your window is level.

Continue to step-by-step instructions

Step by Step Instructions

1 Check the window measurements
2 Lift the aluminium window into place
3 Check that the window is level
4 Make sure the window is flush with the wall
5 Attach the window frame to the wall
6 Attach the second side of the window frame
  • Step 1. Check the window measurements

    Start by making sure that your aluminium window is going to fit into the hole in the wall. Double check the height and length of your window and the height and length of the opening in the wall to make sure the fit will be right.
  • Step 2. Lift the aluminium window into place

    Depending on the size of your aluminium window, you’ll need at least two people to help you lift it into place. One to help you lift the window and the other to make sure the window doesn’t fall through the other side. As you lift window into place, try to make it as level to the inside wall as possible.
  • Step 3. Check that the window is level

    Once your window is in position, make sure you have it level. Place your spirit level on the window ledge to see if it’s flat. If it needs to be raised, rather than lift the whole window frame, put a packer under the spirit level until it is flat. Then put the packer under the bottom reveal and snap it off.
  • Step 4. Make sure the window is flush with the wall

    Once you’ve got your window level, you need to make sure it’s also flush to the inside wall. To do this, line up your set square against the wall and either push the window out or get a person outside to push it in, until the wall and window are level.

  • Step 5. Attach the window frame to the wall

    Pre-drill three holes into each side of the reveal at the top, middle and bottom. Use your set square to make sure the frame stays flush with the wall. Then drill in three screws to attach one side of the reveal to the wall. Now you have one side of the window attached, you won’t need help to hold the window in place. 

  • Step 6. Attach the second side of the window frame

    Before you attach the second side, check for any gaps between the wall and window frame. If there is a gap, you can put packers into the gap and then drill in the screws. The packers make sure the reveal won’t bow. Snap off the packers and tap them into the gap with a hammer.
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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 which 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.

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