Damp patches on garage inside walls

[nbr]

Hi,

I see some damp patches on the garage inside walls in the house I recently purchased. See picture.

It has been raining quite a lot lately and maybe the garage door in the pic is causing some of the patches, but some patches are a bit too far from that door for the door to be the cause of those patches.

To the touch the wall is not wet.

The outside of the house does not have patches and there is no match on the outside for where the patches are in the indoor side of the wall.

Any idea on where the dampness might come from or on how to investigate more the root cause?

Thanks

 

[Wayners]

Cavity wall?

 

[nbr]

Cavity wall?

Can you please expand? Thanks

 

[Wayners]

Single skin or two with gap.

Cavity is the gap in the wall. Outside wall and another inner wall

 

[Harry Bloomfield]

Photo needed of the far side of that wall please, but it looks as if the cause might have something to do with the joint between the two styles of brick/block on the right.

 

[nbr]

Photo needed of the far side of that wall please, but it looks as if the cause might have something to do with the joint between the two styles of brick/block on the right.

You mean you need a picture of the full wall or just left or right expanded in the picture?

 

[Harry Bloomfield]

You mean you need a picture of the full wall or just left or right expanded in the picture?

The other side, the back of the surface which we cannot see at all.

 

[nbr]

The other side, the back of the surface which we cannot see at all.

The other side is just reconstituted bricks since the garage is a building on its own, detached from the house

 

[Harry Bloomfield]

The other side is just reconstituted bricks since the garage is a building on its own, detached from the house

Without a photo, my guess has to be - the joint between original house wall and the garage wall, is allowing the ingress.

 

[nbr]

Without a photo, my guess has to be - the joint between original house wall and the garage wall, is allowing the ingress.

Thanks - how would you go about fixing this?

 

[Loofah]

Pics of the outside would be helpful to better see where water might be coming in

 

[foxhole]

The other side is just reconstituted bricks since the garage is a building on its own, detached from the house

If the garage is detached how can damp be seen in the house ?

 

[nbr]

Pics of the outside would be helpful to better see where water might be coming in

Attached is a pic of the outaide of the garage. The patches are inside the garage, on the left looking at the pic attached.

 

[nbr]

If the garage is detached how can damp be seen in the house ?

The damp is in the garage...

 

[JohnD]

The inside picture shows water above and to the right of the door.

So looking at the outside pic it will not be the downpipe and gutter, provided the gutter has an end cap and water is not gushing out of the end. Does it?

But the roof, verge, and doorframe

More photos of these please.