Really need help with some leaking pvc windows in flat

[Jordan427]

Hi

I have a problem with leaking pvc windows in a flat I've just bought.

When it rains ,and in particular when the wind is blowing directly onto the windows, I'm finding there's quite a lot of water getting in. It appears to be getting in through the beading and running down to the cill where it forms a puddle. I've replaced all the seals on the windows and it hasn't done much!

I spotted today that in the external corners the black seal has shrunk considerably, up to an inch in places (see photos), would this be a strong candidate for the cause of the water ingress? I've drilled addition drain holes and the water does drain out so it's not a blocked drain.

What are those black strips called and are they easy enough to replace? If I search for just pvc window seals I just find the usual rubber ones with a gasket that I've already replaced!

Thanks a lot for any input!

[welsh brickie]

it seems to me that the drainage holes have not been drilled deep enough, this is a common fault during manufacturing, If you remove the glass unit, and re drill the drainage holes ,then use a glass of water to see if the water drains away.
As for the rubber seal on the outside, simply stretch it and superglue it into position

[Jordan427]

thanks, i've had someone in to drill extra drain holes. It's very exposed (sea front) and it leaks really bad when the wind is driving the rain directly onto the windows. i don't really know what else I can do, it's doing my head in!