Evening all.
I recently had the walls on my stairs re-plastered (within the last two months) and a very fine job too.
The walls had been drying out fairly nicely but when I went to paint yesterday I noticed some damp areas on the inside of the external wall. They also have a white substance on them (It makes me think of the crystals you sometimes get on brick but this was smooth).
This second picture isn't very good but the bits that look white are actually dry plaster colour! However you can see that there are some odd patches on the wall.
Has anyone got any idea what is happening here? The wall was originally covered with wallpaper which I stripped off in the summer. Some of the plaster was blown, particularly on the inside of this external wall of the house round the front door. The outside of this wall faces south and is rendered but it is a wind tunnel and rain does get blown against it. The render is looking quite badly stained so i'm wondering if water is soaking through?
So I think I actually have two questions:
1) Is plaster looking like this normal or is it a symptom of other issues (perhaps damp on the outside of this external wall)
2) If I do have damp on the outside of the external wall what do I do about the render on it? Would it need replacing?
A few years ago I paid to have it painted with some specialist paint to protect the render and ensure it remained waterproof. When the paint started to discolour I contacted the manufacturer as it was under warranty...only to be told the company that had done the work hadn't used their product...
Any help appreciated.
I recently had the walls on my stairs re-plastered (within the last two months) and a very fine job too.
The walls had been drying out fairly nicely but when I went to paint yesterday I noticed some damp areas on the inside of the external wall. They also have a white substance on them (It makes me think of the crystals you sometimes get on brick but this was smooth).
This second picture isn't very good but the bits that look white are actually dry plaster colour! However you can see that there are some odd patches on the wall.
Has anyone got any idea what is happening here? The wall was originally covered with wallpaper which I stripped off in the summer. Some of the plaster was blown, particularly on the inside of this external wall of the house round the front door. The outside of this wall faces south and is rendered but it is a wind tunnel and rain does get blown against it. The render is looking quite badly stained so i'm wondering if water is soaking through?
So I think I actually have two questions:
1) Is plaster looking like this normal or is it a symptom of other issues (perhaps damp on the outside of this external wall)
2) If I do have damp on the outside of the external wall what do I do about the render on it? Would it need replacing?
A few years ago I paid to have it painted with some specialist paint to protect the render and ensure it remained waterproof. When the paint started to discolour I contacted the manufacturer as it was under warranty...only to be told the company that had done the work hadn't used their product...
Any help appreciated.
