What plaster/filler to use

TheGreenFrog

Someone bashed the corner of a wall in my house and a bit of plaster came off.  The corner is a rounded corner and there seems to be some cement render underneath the plaster (the wall is stone).  The area to be repaired is about 8cm long and 3 cm wide but it is on the corner.  I think I need a bullnose/corner trowel but don't know what plaster/filler to use as there seems to be a very wide choice - any pointers gratefully received. 

stuart45

Have you got a photo?

TheGreenFrog

stuart45 said:

Have you got a photo?

It is actually my mother-in-law's house so don't have a photo to hand - am planning to repair when we next visit her in a few weeks.

FreeBear

TheGreenFrog said:

Someone bashed the corner of a wall in my house and a bit of plaster came off.  The corner is a rounded corner and there seems to be some cement render underneath the plaster (the wall is stone).  The area to be repaired is about 8cm long and 3 cm wide but it is on the corner.  I think I need a bullnose/corner trowel but don't know what plaster/filler to use as there seems to be a very wide choice - any pointers gratefully received. 

In my house, a lot of the corner fillets are (presumably) cast in cement, and then have a thin skim of lime plaster over the top. In other houses, they would use a wooden quadrant to provide the bullnose profile.

A patch 80x30mm isn't very large, so I'd build it up in multiple thin layers of something like EasyFill and carefully sand it back. Wouldn't bother with a bullnose trowel (could never find a decent one at the right price) - A piece of wood or plastic cut carefully to shape will get you close enough.

stuart45

The corners would often be done with temporary timber straight edges nailed  to the reveals and the lime or cement float and render coats taken up to them to get a straight edge.  The straight edges were then wedged inside the reveals for the walls to be done. They were then removed and a skim of lime or gypsum over the top. When Carlite came in angle beads started being used for the corners, which was a quicker method.
On my extension I used the old fashioned method of 2 coats of sand/lime/cement and a gypsum skim using straight edges and no angle beads. You have to do the reveals first by nailing the straight edges to the wall, and then wedge them into the reveals to do the walls.