You fix the frame with cob. Working with cob is really different from working with cement. Try it out first; the cob shouldn't be too dry or too wet. When applying, ensure you make an uninterrupted "roll"; there should be no gaps in it.


You can make cob very well with 1 part clay powder and 1 part fine sand. Mix well, and then add water.


   Top frame

Apply a layer of cob to the top of the bell and press the steel frame into it. Check carefully that it is level. Remove the cob that squeezes out. Height (cob + frame) must be ± 15 mm.


   Top plate

Now place four strips of Superwool on the inside of the frame (mind the overlap). Place the top plate; between the plate and the frame is a margin of 4 mm.

 

Take apart frame and door and place the frame. Make sure the distance between the frame and the sides and top of the firebox is the same.

Mark the exact location of the holes, remove the frame and drill the holes. Insert plugs and fix the frame.


Seal the edges with some sealant; use masking tape to get it nice and tight. Then put the door back in.

   Sweep access hatch

One more thing: the hatch at the bottom of the stove. During the running-in period you put it in place and cover the brims with tape. That's because you have to empty the condensate tray every now and then. But when the running-in period is over, you place the hatch permanently. You put it on a strip of Superwool and seal the other brims with sealant.












   Installing the frame and door unit

During firing, ash ends up in the base layer. Before a new heating season starts, it is therefore important to sweep that base layer. To do this, cut open the sealant edge and remove the hatch. When you have finished cleaning, put the hatch back in and seal the brims airtight.


It is recommended to place a tile in front of the stove: this way you protect your floor against sparks and ashes.

Superwool

Cob