Reinforcement chimney crown

[bets]

Hello

I am going to cast my chimney crown approximately 65 x 65 cm.

Does it need to be reinforced, and if so, how much?

Best regards

 

[norrbottenstorpet]

My former crown was "reinforced" with some kind of slightly thicker steel wire. It had lasted for 40 years.

It is probably a bit doubtful if it is necessary, but it hardly hurts as the crown is exposed to frost. A ROT-net as used for floor work would probably work, with a wire diameter of about 2.5-3 mm.