I have a fireplace and chimney from the 1940s that have many flaws. There are holes from nails from interior walls that have been attached, screw holes from a radiator that was screwed on, and cracks from settling. Some are very deep, others superficial. I thought I should do something about it now.
Should I use refractory mortar for both the inside of the fireplace and the outside of the chimney? Or are different mortars supposed to be used?
I would gladly accept tips on how I should do it, and which tools are good. My experience with masonry is limited. I have made a number of raised beds with concrete blocks outdoors.
Large and deep holes, probably from a door frame.
Cracks
Holes where the mortar has fallen away over time
Inside the fireplace, the mortar between the firebricks has come loose.
