Damp next to window

[Will 1222]

Hi, 

 

I had new windows installed last year and we started getting (what a presume is damp) coming at one side of the windows. Does anybody have any advice on what I should do to stop this, as it’s gradually getting worse 

 

thanks in advance

[Andehh]

Any pics of the outside, incl above?

[Will 1222]

Sure thank you - It’s an upstairs window, so these are the best I can get

[Iceverge]

Two possible causes.

 

1. It's originating from outside caused by the gutter over flowing. And poor eve and window detailing with a retrofit external wall insulation job. 

 

 

Or 

 

2. High humidity internally caused by poor ventilation and insufficient heating leading to condensation on the window jambs as these will be the coldest surface of the house. 

 

 

Questions. 

 

1.Do you have a wider view of the front of the house? 

 

2. What kind of ventilation strategy do you use in the house? Trickle vents and bathroom fans? 

 

3. Do you have any pics of the house before the external insulation was done?