Tracing damp source

I have a 1960 bungalow which had all windows and doors replaced with double glazed aluminium external doors and windows. I have several places where damps is penetrating, at least I assume so as mould is appearing and in one case the skirting board is rotting. In all cases the ingress is in near the corner of either window or door. I have had a go in one case by replacing the mastic externally in the area of the damp on one window, but it is still occurring. Any ideas of how I can ascertain the cause, and more importantly prevent it?

Reply to
Broadback
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Probably condensation on the frames. Your choices are; more ventilation, especially in kitchens and bathrooms, dehumidifying or new windows.

Reply to
Huge

I too have aluminium frames and the water runs down them every time I'm cooking anything - it's condensation and the only way around it is to open some windows or ventilate by airbricks/fans etc.

even the bedroom frame has a coating of condensation on it on cold mornings from breathing.

BTW, the rotting skirting board you mentioned must be close to, or touching the door frame?

Reply to
Phil L

Thanks for your replies, but I do not think that it is condensation, for the following reasons. We only have condensation on the kitchen windows when cooking with water, and on our bedroom window on the exceptionally cold night when we sleep with the window closed, there is no damp in these rooms. The bedroom window with damp is only on one window, facing East, not on the window facing North, also a damp patch appears when there has been a lot of rain blowing onto the window. We have 2 french windows, both facing South, only one side of one window has skirting which is rotting. As as soon as Christmas is out of the way I am having a decorating blitz I would dearly like to find the source and cure before then. So ideas and help warmly welcomed.

Reply to
Broadback

I think you would need to replace all the mastic rather than just the bit that aligns with the damp on the inside. The point of entry may be somewhere else on the frame

Reply to
stuart noble

Also make sure that the cills have a drip on them.

For a reason that I totally failed to understand, my 'plankpot' of a builder (no it wasn't Dribble), trimmed the cills before fitting the wooden framed windows, and couldn't understand why I was permanently suffering from damp penetration at the window bottoms. In the end I added a strip onto each window cill with a drip and the problem went away.

Rob

Reply to
robgraham

I think we need more information. When was the house built, is it externally rendered. Pics would be helpful.

NT

Reply to
meow2222

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