Hello,
I have recently purchased a 1930's property. The downstairs has been fairly recently replastered with plasterboard and then skimmed however upon further investigation of the bedrooms when we started removing wall paper the plaster had blown off the walls in a alot of places and was coming off with the paper. I am assuming this was a lime plaster, it was a dirty yellowish colour and is was very easy to break up and crumble with my fingers. This then led to removing all of the plaster and the base back to the brickwork.
Now I need to repoint some of the bricks and replaster but I have heard that buildings built with lime need to have lime plaster and mortar used otherwise you may get issues with damp.
I have been told that the house has been built with gauge mortar. The house has cavity walls, and has been externally rendered (not sure with lime or cement - probably cement) and then painted with an acrylic paint. There doesn't appear to be any major damp other than on the ground sub floor (however this is due to another issue with standing water). There was a little mould around the windows and a small patch on a bedroom wall, but the brick walls feel dry.
So essentially my question is should a lime based plaster be used to re do the walls and repoint or will normal plaster and hardwall and normal cement to repoint be okay?
I am of the understanding that gauge mortar is lime with cement so I am thinking that the hardwall should be suitable?
I have attached some photos of the exterior wall of the house next door and of our interior bare brick walls. The exterior wall mortar is not crumbly at all compared to the interior walls.
Thank you for your help in advance.
I have recently purchased a 1930's property. The downstairs has been fairly recently replastered with plasterboard and then skimmed however upon further investigation of the bedrooms when we started removing wall paper the plaster had blown off the walls in a alot of places and was coming off with the paper. I am assuming this was a lime plaster, it was a dirty yellowish colour and is was very easy to break up and crumble with my fingers. This then led to removing all of the plaster and the base back to the brickwork.
Now I need to repoint some of the bricks and replaster but I have heard that buildings built with lime need to have lime plaster and mortar used otherwise you may get issues with damp.
I have been told that the house has been built with gauge mortar. The house has cavity walls, and has been externally rendered (not sure with lime or cement - probably cement) and then painted with an acrylic paint. There doesn't appear to be any major damp other than on the ground sub floor (however this is due to another issue with standing water). There was a little mould around the windows and a small patch on a bedroom wall, but the brick walls feel dry.
So essentially my question is should a lime based plaster be used to re do the walls and repoint or will normal plaster and hardwall and normal cement to repoint be okay?
I am of the understanding that gauge mortar is lime with cement so I am thinking that the hardwall should be suitable?
I have attached some photos of the exterior wall of the house next door and of our interior bare brick walls. The exterior wall mortar is not crumbly at all compared to the interior walls.
Thank you for your help in advance.
