Indoor wood boiler door problem

[rebel3.0]

Hi folks,
I have a old indoor wood boiler in the cellar that I have a question on.

Towards the end of last years burning season, the what I would call cement, started to break apart and fall out of the back of the door.

id like to repair this but I dont know if it would be regular cement or something else?

 

[olympyk_999]

its called refractory cement...i believe you can buy small amounts from hardware stores under the Rutland brand...
ive bought #50 bags made by Saint Gobain...but theyre local to me, they sell all over but dont know to who?

 

[dancan]

You could check with Shaw Brick for refractory cement , they also have firebrick , home hardware is another place to check .
What make is the furnace ?

 

[rebel3.0]

I found some at the ye old stove shop in Dayton. As for the make of the furnace I'm not sure. Its quite old

 

[dancan]

Geez , haven't been through Dayton in years (more than 30 LOL) .