Tilt and turn window unit leaking...

ottosump · 28 Nov 2011

Hello group, I am experiencing a problem with a upvc double glazed tilt & turn unit. Whenever rain hits the South facing window it leaks in from the bottom, I had a double glazing firm out last year who fitted the weather strip on the window, this didn’t really help matters. I was then advised to drill extra drainage holes in the frame which I have done in the middle and at the end, the drainage channel is clear, poured water into it using a jug and it happily ran out through the drain holes. I don’t really want to splash out on a new window so any advice would be appreciated.
I have included a few photos below, note the stone designates where a stream of water is visible on the frame when raining.
Cheers group

Note: The window opens inwards

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big-all · 28 Nov 2011

you need to think laterally here the water may be entering far away from where it appears
does the water appear from between the opening and frame or below the frame ??

ottosump · 28 Nov 2011

Thanks for the reply, if you look at picture #3, when the window has been opened during a rainy spell, the water is sitting in both the channels that I have drilled holes in. If you enlarge the picture you can actually see residual droplets in there..

God · 28 Nov 2011

How is the external drip fitted, you may need to seal along the top of it if water is running behind it

big-all · 28 Nov 2011

the point i am making is the path could be very different to what you think

i have traced damp below the sitting room to the window above

water can run to the lowest point then drip down even under surfaces

ottosump · 7 Feb 2013

I rectified a fix for this, although not ideal it has worked and has been puddle free for months, I located the seep holes in the lower part of the frame, and drilled holes directly above them. The water simply drips/runs right out of the gutter. Like I say, not ideal but it has worked.
Thank you for all the advice, Otto

orchard222 · 13 Feb 2013

First thing you need to do is fill those extra drainage holes you added ASAP, they are in the WRONG channels!!! All they are doing is filling up the frame with water and quite possibly running down your cavity and can cause much bigger problems.

ottosump · 13 Feb 2013

That's impossible, the drainage holes go direct to the window ledge, I can see the concrete sill underneath, no water is backing up.
Regards Otto

The lobster · 20 Jan 2019

Leaking tilt and turn window?
I had the same thing happen to me and all the window people did not have a clue! So check the rubber seal around the glass on the exterior as mine had gaps at either end where it had shrunk. I filled it with silicone sealant and seems to have worked! Plus i replaced gasket seals on window frame for good measure. Hope this helps someone.

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Tilt and turn window unit leaking...

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