Hi,
Wondering if anyone could assist with a question on rendering. I have recently had work done - some new external walls and and an extension.
The external wall render looks like it has a problem - you can almost see the pattern of the block work underneath.
In addition the walls have staining and marks already. I have other external render done previously around 8 years ago and it is fine.
The back extension wall also shows this blocking effect. There is a side extension wall and this seems fine.
The render seems to be of the correct depth as there are beads on the walls.
I attach a couple of pics which hopefully show the issue.


I am not a builder and this is my first post so if you need more info let me know! cheers paul.

Thanks for the quick response.
The render has been on some time now say 3 plus months.
Seems strange that one outer wall of the building is fine but others show those imperfections.
I can paint the driveway external walls but cannot do the back of the house [see windows pic] as then i would have to paint the whole house to match and want to avoid that.

Good points. I attached new pics. One shows the side entrance. The house wall is absolutely fine. The retaining wall has blocking and staining. Its not exposed at all.
The other pic shows back of extension. South facing. The lower half is fine the top half not. The bottom half was plastered first so has had longer to dry and was obviously a different batch of plaster.