Water ingress at windows -please help

weekaty

Hoping someone can help.
I got new windows fitted in my 1950s semi-detached house in November 2017.
All fine and toasty but over the last few months I've been noticing light shadow staining around the windows sealant in the inside.
On Saturday,-super bad weather-wise -the shadows turned to full on water lines/darkening. The worst is downstairs over front and back windows, it's less prominent upstairs but shadows are starting to come through.

Phoned the fitters who, after much cajoling, cake out to inspect the seals. Apparently all fine outside and in. They can't see any issues and suggested it was blown render letting water into the wall cavity and dropping down.

When I asked why this was happening only with window frames and not throughout the exterior walls, I was told to.consult a builder.

So I did. Phoned for a quote for rerendering (it does need it) and the guy has advised that a render leak wouldn't cause the level.of water ingress. He's bringing back an independent window guy to review.

So here's my question. What on earth could it be? In fairness to the window company, there doesn't seem to be any issues with the external sealant. It looks and feels totally fine and secure. My worry is there's something amiss in the cavity (a leak) but why would it localised around the frames?

Could it be fluctuations in temperature causing the sealant to pull away from the wall? If so, why is it around the base units of the windows too?

Any help or advice would be appreciated. I'm stuck until I can figure out liability but am not in a position to afford a specialist to come out..

Annoyingly, I'm not allowed to post links as a new user so can't upload the photos.
.

Mr.Generous

Just put your link in with the http// changed to hxxp// and someone will correct it for you.

weekaty

Here are photos of someone could post them. There are more but these two give the general gist of what I'm dealing wuth. Thanks!

Hqqt://i68.tinypic.com/33eu6tw.jpg

hqqt://i65.tinypic.com/wuf1xi.jpg

theonlywayisup

weekaty wrote: »

Here are photos of someone could post them. There are more but these two give the general gist of what I'm dealing wuth. Thanks!

Hqqt://i68.tinypic.com/33eu6tw.jpg

hqqt://i65.tinypic.com/wuf1xi.jpg

I have tried to view those and cannot see any photos.

Dean000000

weekaty wrote: »

Here are photos of someone could post them. There are more but these two give the general gist of what I'm dealing wuth. Thanks!

http://i68.tinypic.com/33eu6tw.jpg

http://i65.tinypic.com/wuf1xi.jpg

Edited to take a lookie lookie

stuart45

You need to put some photos of the exterior on as well.

DaftyDuck

Yes to pictures of the outside, please. It would also be helpful if you happen to have pictures of the old windows, even if not close-up.

weekaty

I'll take some photos when I get home tonight and try to dig out photos of the old windows from the estate agent photos!