blackbirdxx
New Member
Hi,
I have a c1890’s house constructed with solid brick suffering from penetrating damp in the upstairs walls. With the bad weather we’ve had in the UK this winter, the problem has been worse than ever with damage to the internal decoration within predominantly the south facing walls. FYI there are no problems with the guttering or around windows and the tiled roof extends well proud of the walls giving maximum protection to rain getting in at the top. All the upstairs walls are roughcast rendered although I’m not sure if they are composed of lime or sand/cement. The walls are painted with magnolia Sandtex masonry paint. This damp problem has been going on for about 8 years now (ever since I bought the property) with each upstairs south facing walls having been re-rendered over the years with sand/cement up to top of window level.
My questions are:
I’m not sure what the existing upstairs render is, either lime or sand cement. Is there a way of finding out?
By replacing the lower patching render which was replaced appx 8 years ago with a breathable lime mix, will this address the damp problem, even if the rest of the render is sand/cement?
I understand I will need to lime wash the new lime render. Will I need to take the impermeable Sandtex paint off the rest of the house or can I over paint it with a lime wash so the whole house looks the same?
Thanks in advance any other tips you may have.
I have a c1890’s house constructed with solid brick suffering from penetrating damp in the upstairs walls. With the bad weather we’ve had in the UK this winter, the problem has been worse than ever with damage to the internal decoration within predominantly the south facing walls. FYI there are no problems with the guttering or around windows and the tiled roof extends well proud of the walls giving maximum protection to rain getting in at the top. All the upstairs walls are roughcast rendered although I’m not sure if they are composed of lime or sand/cement. The walls are painted with magnolia Sandtex masonry paint. This damp problem has been going on for about 8 years now (ever since I bought the property) with each upstairs south facing walls having been re-rendered over the years with sand/cement up to top of window level.
My questions are:
I’m not sure what the existing upstairs render is, either lime or sand cement. Is there a way of finding out?
By replacing the lower patching render which was replaced appx 8 years ago with a breathable lime mix, will this address the damp problem, even if the rest of the render is sand/cement?
I understand I will need to lime wash the new lime render. Will I need to take the impermeable Sandtex paint off the rest of the house or can I over paint it with a lime wash so the whole house looks the same?
Thanks in advance any other tips you may have.