While repainting some plaster started coming off the old brickwork in my new house. I now have a 1m by 1/2m hole. Underneath, the mortar is crumbling and some bricks are cracked. I'd like to plaster over this hole, but first I need to patch up the mortar. Two questions:
* Is this easy to do myself? I'm a DIY beginner.
* Should I be worried that there are underlying problems with the brickwork? The survey said the house was structurally sound. I'm not sure whether this level of damage is normal for a house this old (c. 1800) or if it might reveal other issues.