Condensation on new uPVC windows?

[Windowpain]

Had new uPVC windows fitted in DD's room and spare bedroom. Have noticed condensation on panes and what could be mould on the seal around pane. Had painters into quote yesterday and they noticed problem and said windows should have been fitted with air vents and that we need air bricks.

They also said if we don't have air bricks any wallpaper will start to come off.

Rang Anglian windows and they said condensation to be expected. Nothing they can do.

Who's right. Rooms are regularly ventilated by the way.

Thanks.

I understand that there should be air vents fitted. Obviously you will get some condensation (fewer draughts, laws of physics) but there MUST be vents.

Anglian and the other big DG companies are known crooks and will fob you off - the industry didn't get its reputation for nothing. Raise a formal complaint and insist that they fit the vents.

Thanks for reply. I've spoken to a manager and he said vents were "optional"; they were an extra which they recommended for bathrooms but not bedhrooms If we want vents then we will need to pay extra. Would an airbrick do the trick?

An airbrick would work but probably cost more.

I am shocked that there are people fitting windows with no vents.

A vent is just a hole. They put little ornamental covers on them.

Our windows have trickle vents built into the frame.

MIL has had condensation problems since she had new windows put in because they don't have trickle vents. IMO building regulations should insist that all windows have trickle vents.

We have just had a new window installed as part of some building work, When the building inspectors came to sign the work off they checked that there was a trickle vent in the window.

It is not compulsory but it recommended. Our last house was a new house and we had trickle vents on all the windows - made a big difference.

Problems with plastic windows and doors are so common that there is bound to be at least one person in your town who specialises in mending them.

Try to get personal recommendations and look at their previous work then ask for a price to drill some holes and put plastic covers on them.

Your window locks may also have a ventilation setting.

Draping wet washing around the house is the best way to cause condensation, damp and mould.