condensation on windows

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villa 1

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During this recent cold snap i've been getting massive amounts of condensation on a north and east facing window in a bedroom. The house is one year old with pumped cavity insulation and insulated interior plaster slabbing. Heating is more than adequate in the room but the problem with condensation is not going away. There are trickle vents in the windows but due to the icy conditions I have closed these. I know closing these vents is not helping but is there any way of reducing this condensation. I have mentioned the problem to the builder but he is putting this down to a north facing room.
Any ideas, could the glazing in the windows be the root cause of this problem?.
The condensate is now starting to damage the window boards.
 
I have the same issue, even in bed rooms where no one is sleeping. The oak window boards look to be a bit black, I generally run a bit of tissue over the wet in the mornings, new build also with good insulation and trickle vents
 
Similar problem in 2 year old house. Condensation under window and on a couple of spots on the skirting and one wall corner. Signs of mould starting in these spots. Putting it down to small gaps in the insulation. Treated the mould and bought a dehumidifier in B&Q the other day and have it running on a plug timer for 3-4 hours in the morning and evening. Its a 12L model and cost me e110 and seems plenty strong enough. It's good enough to take all the condensation off the glass and no sign on the walls. villa_1 that black on the windo board is mould so you should treat that too to kill it but the timber will still be stained which is the same as I have on my velux. If I had known that beforehand I'd have put in the plastic type velux windows.
 
This is a very common problem at the moment. On the wooden windows The condensate is even penitrating the joins in the window. This is causing the timbers to spread. This inturn is damaging the handles, which inturn damages the handles and locks (espags), in that order.

The only answer is ventilation ventilation ventilation ventilation.

Where ever possible, even in this weather, open the windows periodicly, during the day.

To prevent the mould / fungus / and staining, go to a specialised paint store, eg, crown or johnstones (spell) and get a perventitive paint.

As a side, put wd40 on the hinges.
 
Hot air absorbes moisture and contains more moisture than cold air (its measure as RH Relative Humidity) the air in the house absorbes moisture from washing, cooking, breathing, drying clothes etc. so when it is cooled the air gives up its moisture as condensation.
Note: A gas cooker is bad for condensation because the act of combustion (gas Burning) generates moisture as well as cooking.
You need to consider what is generating the moisture, are you drying in the house? do you have an extractor in the kitchen?
 
I have this too on double glazed pvc windows. even in the kitchen and living room where a hygrometer says the air is too dry
 
s.o.s i live in a ground floor apt, the front of the apt is double glazed,and its always covered in condensation its even gotten to the stage its freezing and turning to ice, thats in all windows. what can i do
 
Hi all,

due to the pending installation of inbuilt wardrobes on the wall containing the existing vent in a bedroom, I'm looking for alternatives. I dont "think" trickle vents would be sufficient as there isnt any large windows and much frame space. Because the bedroom sits below a roof line with dormor windows there isnt many alternate wall locations and it would also mean creating patch work on the outside dashing that I'd like to avoid if possible. Due to the dormor nature of the room/roof I was wondering if an air vent via the roof /ceiling would be an alternative (ie in terms of regulations etc.)?

Thanks
S.
 
I attended at a house to inspect the cause of condensation in a bedroom last year and the window was north facing.
There was no visible excess of moisture in the air, yet there was condensation on the floor and windows.
There were two adults and one child in the apartment.

We opend up the cavity and confirmed that there was ample insulation.
We traced part of the problem to the underside of the ground floor slab - a section of insulation had not been installed.
There was also a suspicion that a metal beam at floor level had not been insulated and was contributing to the problem.
Finally it looked as though the windows were metal framed and the thermal break looked to have been compromised or else "they're all like that, sir..."

In general you have to increase the level of insulation, eliminate cold bridges, increase the heat and reduce the water vapour in the air.


ONQ.

[broken link removed]

All advice on AAM is remote from the situation and cannot be relied upon as a defence or support - in and of itself - should legal action be taken.
Competent legal and building professionals should be asked to advise in Real Life with rights to inspect and issue reports on the matters at hand.
 
"Finally it looked as though the windows were metal framed and the thermal break looked to have been compromised or else "they're all like that, sir..."

Concur with above.

In addition, I have seen situations where insufficient insulation is installed within the reveals - where the windows or blockwork are too close together contributing to the condensation on the glass.
 
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