Damp Query

[danr86]

I've had the ground floor injected and sand and cement rendered but the joist which can be seen in the first picture where it comes out the wall is slightly damp. Is there anything that can be done about it?
The other pictures show where the wall is in relation to the outside walls.
I've only recently put the decking in place and the joist was damp before I laid the decking.
The dampness is actually greatest away from the outside door, towards the internal wall. There is no guttering or pipework nearby which could be contributing to the dampness.

Thanks

 

[gissle]

Hi,

I'm not an expert, there are a lot more experienced people on this forum. This is a tricky one.

Really you need to ascertain how the damp is getting there. Probably stating the obvious, could some rubble be bridging the gap in the cavity wall?

Could the damp course be damaged?

Is the door sealed in properly?