This is easy. You don't have to buy paper tape or mesh. You just need to buy some cheap dacron, but it should be chemical?fiber, not cotton, because after long time , the cotton will easily decay. The chemical?fiber is sealed in wall, so it is aging resistant. Then pour lime into the joint, and cut mesh into small strips, paste them with glue on joints. When they are dry, powder them.
Mesh is certainly better.
Dacron cloth is more anti-cracking.
