uPVC Window Leaking from the lower beading

[elecrobot]

Hi All,
In last couple of weeks i have noticed some water dripping from my window beading (when it's raining) and would greatly appreciate if someone can please give some advise:
I have upvc tilt and turn window. it has two doors on top and two bottom glasses which are sealed.
Please see picture below:
https://hosting.photobucket.com/images/i/elecrobot/001_-_Overall_Window.jpg

I spotted some water leaking from low bead as marked up in red circles below:
https://hosting.photobucket.com/images/i/elecrobot/002_-_Leak_Point.jpg

I then removed the lower right beading to further investigate:
https://hosting.photobucket.com/images/i/elecrobot/003_-_Leak_Area_with_beading_removed.jpg

I poured some water in the channel 1 & 2 to test the drain holes. All drain holes worked fine but i believe water seeps through holes circled in pink and runs down to the bottom as shown in picture below:
https://hosting.photobucket.com/images/i/elecrobot/004_-_Leak_transfer_from_top_to_bottom.jpg

Zoomed in picture of below beading:
https://hosting.photobucket.com/images/i/elecrobot/005_-_zoom_version_of_below_bead.jpeg

This is also happening on the left hand side of this window. I have exactly the same window in the living room with holes visible but i don't have any leakage.
I have another type of window (which doesn't have bottom sealed glasses) in bedroom and noticed that the corners are sealed by some plastic stiff material as shown in picture below:
https://hosting.photobucket.com/images/i/elecrobot/006_-_Top_corners_on_other_window.jpeg

can someone please advise what should i do to resolve this issue?

 

[diy_fun_uk]

Have you tried pouring some water at those specific points (circled in pink) to determine if it then leaks down? If yes, why not try simply sealing those areas with appropriate sealant? That would be my first attempt at a fix, especially as you've determined the drain holes are working.

 

[elecrobot]

Have you tried pouring some water at those specific points (circled in pink) to determine if it then leaks down? If yes, why not try simply sealing those areas with appropriate sealant? That would be my first attempt at a fix, especially as you've determined the drain holes are working.

Thanks for reply. Yes i have poured water in the pink holes and water does leak down. I have similar window in other room, it has open holes as well but no leakage. I just wanted to check whether it's ok to permanently seal those holes or is there any particular reason why these have been designed like it...

 

[diy_fun_uk]

Thanks for reply. Yes i have poured water in the pink holes and water does leak down. I have similar window in other room, it has open holes as well but no leakage. I just wanted to check whether it's ok to permanently seal those holes or is there any particular reason why these have been designed like it...

In theory, little or no water should ever reach the inner channel as the drain holes and outer channel are supposed to manage water ingress in that sense. If you think there are little holes where the two sections of frame meet, it will do no harm to put some sealant in those corners to determine if it resolves the issue.

 

[ronniecabers]

Thats a classic sign that either the frame drain holes are blocked , or the frames need ' equalising ' , that is a hole drilled in the top of the aperture that holds the glass in . As you have tested the drain holes it will be equalistaion . This will require the glass to drill ttwo similiar holes as the drainage hole in the top of the frame. I bet it is far worse when the weather is extremely windy and very wet against that particular window. Whilst the glass is out , you could also run a bead of silicone along the bottom of the glass unit and the frame and half way up each side ( not completely filling up the whole gap , but making a complete seal between the sealed unit and the frame so no water can penetrate but still run around the outer edge of the unit ...if that makes sense lol), just as a back up

The ' stiff ' material in your last picture is the actual ' weld ' material , and in your leaking window , the reason it doesn't have any on that horizontal is that it is a ' mechanical ' joint ( screwed ) not welded . It will do no harm to seal them but i suspect they aren't the main cause of the leaking water