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Your drainage holes are where your window sends water out when water comes down your window frame. If your window is leaking, it is likely your drainage holes are blocked. Do not worry we have a really quick self-check & clean step by step below to help you fix this issue with nothing but a screwdriver and five minutes to spare.
Follow the steps below to diagnose and stop water from coming in through your frame
First, you need to locate and diagnose the issue by testing which holes are blocked. The drainage holes are located on the inside your window frame in the left and right corners.
Secondly, you will need some water in your mug. You will need to pour this water into each of the drainage holes and see if any water appears to flow out of your internal frame onto the outside frame.
If there seems to be no water appearing to flow on the outside of your windows frame, it means the drainage hole is blocked.
To fix this issue all you need is a screwdriver or any long thin object that can fit inside the drainage hole to manoeuvre side to side and unblock the hole.
You will need to repeat this procedure until you can see a clear stream of water flowing from inside your frame to the outside as shown in step 2.