Harman wood stove fire box brick repair
DIY Repairs

Harman wood stove fire brick repair.

Have you ever looked into your wood stove and said out loud, “Oh oh!”. Well, I had this bucktoothed stove looking back at me back on the end of November.

Harman wood stove fire box brick repair
Something’s not right here.

Had to wait most of the day for the stove to cool down, then clean it out and start some exploratory disassembly and see what’s going on.

Harman wood stove fire box brick repair
Harman wood stove fire box brick repair

The fire brick liner in this Harman Oakwood stove is made up of 5 parts. One on each side which actually just stand in place. In behind each of these side pieces is a piece of really fragile material. Reminds me of a piece of asbestos, but I don’t think it is. Hope not anyway. So if you have to remove these yourself, remove the side brick and the asbestos-like material together and set aside.

Harman wood stove fire box brick repair
Assessing the damage of the fire brick.

The rear of the fire box is three pieces. The centre piece just fits in place. The pieces on either side are kept in place with a piece of metal at the top (screwed in place with a very short bolt), and some metal pieces at the floor of the fire box.

Harman wood stove fire box brick repair
Harman wood stove fire brick damage assessment.

Upon inspection of the break, it looks clean and fits back together snug. Now its to find a material to cement it back together.

Harman wood stove fire box brick repair
A straight forward break.

I ended up going to a local mason, Francis Arsenault (SouthRiverStone.com). Francis was very helpful and offered me some CPD that he thought should do the job. I never heard of it before, but if a mason tells me it works, I’ll take him at his word.

Harman wood stove fire box brick repair
CPD Stove and Furnace Refractory Cement

A little bit of mixing to get the cement smooth.

Harman wood stove fire box brick repair
Mixing it up.

Then plan the repair. Find a flat surface where the brick can set for a day or two undisturbed.

Harman wood stove fire box brick repair
Preparing to butter the brick.

The instructions said not to apply too thick a layer so that’s what I did. yes! I read the instructions first. Imagine! Spread maybe 1/8 or 1/16 inch thickness layer of cement.

Harman wood stove fire box brick repair
Time to spread it on.

Then simply press them together and leave it alone to cure.

Harman wood stove fire box brick repair
Press and hold.

I gave it 2 full days to cure and then reassembled the stove. The stove is working good once again and the break has remained intact.

Harman wood stove fire box brick repair
A good set.

Another job off the to-do list.


A Newfoundland born Canadian with a life long interest in woodworking, baking and anything else that peaks my curiosity.

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