Hi there
1st post here but from the reading this looks like a great site.
I've a small DIY job on, need to finish an uneven stone (party) wall in front room, approx 3 x 2.5m area. The wall is pretty dusty and bonded with original (1904) lime mortar. Finally, it is up to 1.5 - 2 inches out of plumb in places.
I'm planning was planning a 3 coat application:
1. Sand, lime and cement 5.1.1
2. Sand lime and cement, 6.1.1
3. Gypsum plaster skim.
Will the gypsum skim harden off too much, or too quickly causing blistering or cracking?
Also I've recently been advised by a professional restorer (national trust) that I should be scraping away all of the surface mortar and about 3/4 of an inch of the joints before applying the 1st coat? Won't a PVA seal or wetting down the wall achieve the same thing?
Any advice appreciated.
P.S. Injection DPC already installed, no damp problems on the wall, at all.
1st post here but from the reading this looks like a great site.
I've a small DIY job on, need to finish an uneven stone (party) wall in front room, approx 3 x 2.5m area. The wall is pretty dusty and bonded with original (1904) lime mortar. Finally, it is up to 1.5 - 2 inches out of plumb in places.
I'm planning was planning a 3 coat application:
1. Sand, lime and cement 5.1.1
2. Sand lime and cement, 6.1.1
3. Gypsum plaster skim.
Will the gypsum skim harden off too much, or too quickly causing blistering or cracking?
Also I've recently been advised by a professional restorer (national trust) that I should be scraping away all of the surface mortar and about 3/4 of an inch of the joints before applying the 1st coat? Won't a PVA seal or wetting down the wall achieve the same thing?
Any advice appreciated.
P.S. Injection DPC already installed, no damp problems on the wall, at all.