possible causes of damp in upstairs bedroom?

[tucbiscuit]

Hi, I'm new to the forum and a DIY novice, so any help is much appreciated.

The problem is I have just bought a victorian era terrace house and there seems to be some damp on the front wall of the upstairs front bedroom, mainly below the bay window.

Above the window seems fine, and the top of the wall in the room directly below it seems fine (to my untrained eye).

So what could be possible causes? is water coming through from the outside? is water coming through the roof and running down the inside of the wall?

who do I call out for this? a builder of a roofer?


thanks

 

[masona]

Depends what the problem is, might be very simple to do, are the sealant round the bay window okay?

 

[tucbiscuit]

on the outside? not looked, on further inspection today the bit that seems a bit worse is the bit about 2-3 feet off to one side of the window


someone suggested it could be a pipe that is leaking, but I couldn't imagine what pipe would be in that postition???

but as I am by no means an expert there could well be a vital pipe there lol

someone else mentioned it could be the pointing and there is something transportsing the moisture across from the outer wall to the inner wall?


does that sound possible?

 

[masona]

Any photo?

 

[tucbiscuit]

no, but I'll get some, got a bloke coming this afternoon to have a look, I really, really hope it is a simple job lol

 

[billyo]

window putty could be shot wood windows rotten,render could have cracks, flashing over window could need replacing and water running down caverty,or if you have radiator this could be leaking, probable be render or mastic around window.
good hunting and good look

 

[foxhole]

Condensation, water runs down window onto sill and then runs down around sill to soak wall and give damp patches.

 

[chezzer0361]

I had a similar problem on my house the front bedroom was damp and it was the rain lashing on the walls, a few new bricks and some good mortar and the problem has vanished, dried the room out and re-decorated a year ago, never seen it again.......................