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Block light transom windows

How to replace transom windows with HPL

We often see transom windows in new-build homes. They’re the small panes of glass above doors, allowing daylight into windowless spaces. But sometimes, you don’t want the natural light to get in, for example into a bedroom. Luckily, it’s easy to replace a transom window with an opaque panel, so that you don’t get woken up as soon as the sun rises. HPL is recommended for this because it doesn’t allow any light through and comes in a wide range of colours.

You’ll need:

  • HPL panel in the colour of your choice
  • Flat screwdriver

Step 1: Remove and measure the glass

To find out the measurements needed for the HPL panel, it’s important to first measure the window above the door that you want to block up. To do this, you must remove the glass pane from the window frame. First, remove the left and right glass laths with a flat screwdriver. Then press the glass downwards vertically to apply pressure on the springs in the frame. This causes the upper glass lath, which sits against the ceiling, to loosen. Tilt the glass forward and carefully remove it. Now measure the pane, not only the length and width but also the thickness.

Step 2: Order the HPL panel

Now that you have the measurements for the HPL, you can order your replacement panel. View all the panels in our webshop and choose one in the same colour as the frame. Naturally, you can also choose another colour, it’s up to you. Make sure that the thickness of the HPL panel is the same as the glass.

Step 3: Replacing the transom window glass with the HPL panel

Luckily, you won’t have long to wait long for your new HPL panel: we’ll ship your order within 1-5 working days. You can replace the glass quickly so that light coming through is no longer a nuisance.

Follow these steps:

  • Place the lower glass lath on the panel and position the panel diagonally in the frame, so that the springs are pressed in again.
  • Then bring the panel into a perpendicular position and release it. This allows the panel to press against the ceiling.
  • Now push the left and right glass laths back into the frame and the job’s a good’un!

Do you have any questions about this DIY project or about our products? Please get in touch by tel: 0122-3976701 or email us at info@plasticsheetshop.co.uk We’re happy to advise you!

Door with transom window replaced with hpl