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PostPosted: Wed Nov 08, 2017 1:55 pm 
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i moved into my current house a few weeks ago, the double glazing was done around 8 years ago by a local firm. they seem to have cocked up with some of the windows in the house. the one in the photo has been letting in air, i thought it was around the whole window so replaced the silicon but after using a flame to work out where the draught was coming from it looks like the gray sealent around the window opening is letting in air. ive put an arrow on the photo.

does the seal have a particular name? how can i fix it so no air comes in.

the room its in has a really bad condensation problem, the window is dripping every morning despite having a dehumidifier in there, so im hoping that fixing the seal will help with the condensation.



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PostPosted: Wed Nov 08, 2017 4:25 pm 
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Condensation is usually as a result of poor ventilation and 'perfect seals' don't do much to help. Are there any vents at the top of the windows? Anywhere?

Have you checked for other sources of condensation (drying washing indoors, steamy bathroom/shower, damp etc)

sent from my laptop using my fingers - because we REALLY need to know where it's come from.....

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PostPosted: Wed Nov 08, 2017 10:28 pm 
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You might need to increase compression of the seal, or the sash is missing the seal if its not centred in the frame.

Reducing ventlation might make condensation worse!

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PostPosted: Mon Nov 13, 2017 7:33 am 
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After a period of time the compression seal takes on a set and flattens.
You could cut off a section and go round your lacal window store suppliers and buy some more seal, if the company that fitted the windows has closed shop the seals would still be sold in one of suppliers check online.
However I would look first at air travel through the house.....has any air bricks been filled or blocked.
Sometimes the vents into a house become blocked with spider webbs.
My upstairs one certainly was.

Increase air flow through rooms

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