Just in case anyone has been this route, or installed a dovecot slab to the top of a chimney, I’d be keen to hear views…
Personally, I’d rather the aesthetic of a dovecot, but debating the best was to maximise draw / minimise rain ingress as we will have ss liners for stoves rather than open fires.
Current thinking is to terminate the liners at the first corbel brick course, so about 3 courses below the opening. Add a fall and chamfered edges to the slab to direct water off of it and possibly a slight angled mortar fillet to the top of the bricks at the opening, again to shed water away.
I can’t believe too much rain would get blown sideways into the flue liners.
Also, getting 3 pots onto the stack would be very cosy…


				
			Personally, I’d rather the aesthetic of a dovecot, but debating the best was to maximise draw / minimise rain ingress as we will have ss liners for stoves rather than open fires.
Current thinking is to terminate the liners at the first corbel brick course, so about 3 courses below the opening. Add a fall and chamfered edges to the slab to direct water off of it and possibly a slight angled mortar fillet to the top of the bricks at the opening, again to shed water away.
I can’t believe too much rain would get blown sideways into the flue liners.
Also, getting 3 pots onto the stack would be very cosy…



