Repairing a window on a flat roof

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What we do when repairing a window on a flat roof to prevent leaking:

  • Identify the source of the leak. Check the area around the window frame and the roof for any cracks, holes, or damage. If you’re not sure where the leak is coming from, you may need to use a hose to simulate rain and see where the water is entering.
  • Clean the area around the window. Remove any debris or dirt that may be preventing a good seal between the window frame and the roof. Use a brush or vacuum to remove any loose material.
  • Apply sealant around the window frame. Using a caulking gun, apply a generous amount of sealant around the perimeter of the window frame. Be sure to cover any gaps or cracks.
  • Add a second layer of sealant. Apply a second layer of sealant over the first layer, making sure to cover the edges of the flashing.
  • Allow the sealant to dry. Follow the manufacturer’s instructions for the recommended drying time.
  • Test for leaks. After the sealant has dried, simulate rain again to make sure the window is no longer leaking.

By following these steps, you should be able to repair the window on your flat roof and prevent any further leaking. If you’re not comfortable doing the repair yourself, it’s best to hire a professional roofer to do the job.