Help with Damp

Hi, we moved into a typical 1900 brick end terrace approx 2 years ago and once we painted over the eggshell type emulsion paint with Matt we gained a nice big damp patch

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Not sure why the forum turned the picture sideways but basically this is the upper corner of the front of the house. The wall to the bottom is gable end, the wall to the top is front wall of house. The gutters are in good repair, the gable end has no overhang i.e the roof finishes as the same point as the wall. The gable itself has some sort of cement based render but its more like a paint than anything else as its very thin. It is blowing in places but I've removed any patches I find like this. We've had a couple of roofers around and no-one has been able to find the issue. A couple of suggested it could be due to water trapped behind the render. The junction between the roof and the gable end doesn't appear to have any obvious gaps but I haven't been able to see first hand all the wall up to the ridge as its just too high.

Obviously people will need more details but what are peoples first impressions, given the location of the damp is it more likely to be water getting in from above rather than soaking through the wall? Are roofers the right trades people to try to get one of them to sort it or should I look for some sort of specialist

Thanks

The roof covering should overhang the gable wall, not finish flush with.

Without photos of the roof its impossible to comment on cause.

I've not seen one end terrace in my area where the roof overhangs. The perlins finish on the inner course of the gable wall. All the Victorian semi's do but they were obviously for the posher people

What photo's would be most helpful? Roofline where it meets the gable end?

Thanks

It may well be a stain from an old leak. Is it damp to the touch?

There are a few different reasons for staining, other than roof leaks.

terrypin said:

It may well be a stain from an old leak. Is it damp to the touch?

There are a few different reasons for staining, other than roof leaks.

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Nope, its not damp to the touch. A damp meter does read more moisture in the area though and we suffer quite a lot with condensation on the window in this room in a morning but I'm not sure if that necessarily means the room has a higher moisture content because of this or simply because its the main bedroom and gets cold overnight (the chimney isn't open in the room so ventilation is limited to the door only)

The patch never seems to change, even after large amounts of dry weather or large amounts of rain