Advice for fixing rainwater entry at French Window (Ed.)

[Mark811]

Hello,

I was wondering if anyone could advise how to stop the issue I have.

A nightmare company (with 100s of great reviews online) fitted UPVC French doors. On one side a small damp patch appears through the plastered wall during heavy rain.

The exterior seems to be perfectly sealed. What could be causing this?

I appreciate there has to be a gap between the frame and the cill for drainage but should there be full sealant under the cill against the bricks? Really not sure where the water is getting in and very reluctant to have them back again.

Thanks so much.

 

[RrogerD]

I'm no expert. I'm pretty sure that all of these upvc units, windows and doors etc are sealed within themselves. In other words, your leak there would not be coming from within the window (door), but externally. What's it like above? Is it possible that you're getting ingress above and it's simply running along and down the side of the new frame?

 

[ronniecabers]

It could be the end of the cill wasnt sealed correctly where it meets the wall by the cavity and water is blowing back in , through thr gap between bottom of frame and top of cill

 

[foxhole]

They have used trim infill so there is a void behind which could be letting in rain from anywhere on that side or above externally however well sealed it may look.