Hi,
We had our bedroom replastered as the plasterwork was terrible. The room had this weird plasticky paint on it and once that was removed and the plaster redone, the (internal) plasterwork on the external wall has damp patches and has refused to dry.
Our builder has said it is due to an ornamental lintel on the outside of the house catching rain and causing it to penetrate and suggests removing the lintel, redoing the rendering and then replastering the internal side of the wall with a cost around £3,000
However, just got another quote and they have said our builder co##ed up and while it is fine to use gypsum plaster on internal walls, the builder should have used a different plaster on the internal side of the external wall: using sand and cement to create a waterproof membrane. Cost £500.
This new builder is saying that our builder should have known this, should have noticed it was wet when he was replastering (at which point they could have asked us what we wanted doing) and that they should rectify it for free.
As I know very little about plaster, I am just wondering if this sounds plausible and whether you really need a different plaster for the internal side of an external wall?
Thanks in advance
We had our bedroom replastered as the plasterwork was terrible. The room had this weird plasticky paint on it and once that was removed and the plaster redone, the (internal) plasterwork on the external wall has damp patches and has refused to dry.
Our builder has said it is due to an ornamental lintel on the outside of the house catching rain and causing it to penetrate and suggests removing the lintel, redoing the rendering and then replastering the internal side of the wall with a cost around £3,000
However, just got another quote and they have said our builder co##ed up and while it is fine to use gypsum plaster on internal walls, the builder should have used a different plaster on the internal side of the external wall: using sand and cement to create a waterproof membrane. Cost £500.
This new builder is saying that our builder should have known this, should have noticed it was wet when he was replastering (at which point they could have asked us what we wanted doing) and that they should rectify it for free.
As I know very little about plaster, I am just wondering if this sounds plausible and whether you really need a different plaster for the internal side of an external wall?
Thanks in advance