stone walls

Hi guys, does anyone have any advice on how to go about filling and and repairing these holes left by gas heaters? They're solid stone walls about 1ft thick, one is white tricky to get to from outside the other 2 are accesible. Looks like the flue has been cemented in place - not sure if it's...

I am at the early stages of considering renovation of a rubble stone semi detached two-up two-down. The corners of the building are in a poor state of repair. I note that next door has quoins whereas the one I’m looking at does not. Googling has so far failed to answer my question conclusively...

Hello, So I have recently brought a c.1800 stone cottage and am at the start of the extensive work it needs doing to it. The area which is a bit of mine field is the topic of cement rendering and keeping walls breathable. Now the house is basically split into 3 section as I've illustrated in...

I realise that this is a very specific case and I appreciate any advice that I can get. I know that the topic of internally insulating solid stone walls is a recurring one but with all the contradictory advice I was hoping that I might be able to get a consensus on the best course of action in...