Floor screed

A floor screed is usually a cementitious material made from a 1:3 or 1:4.5 ratio of cement to sharp sand. It may be applied onto either a solid in-situ concrete ground floor slab or onto a precast concrete floor unit.

Source: Concrete centre

I just read that apparently you don’t use rebar in screed… don’t know why or if this is correct.

Stove pipe, class A and B

Stove pipe is used for venting wood-burning stoves and is used inside the room where the stove is installed.

As soon as that pipe goes through a ceiling (upstairs floor) it must be converted to a Class A chimney pipe.

If stove pipe is used outside, it will not be able to maintain sufficient temperature to prevent creosote build up so the risk of a chimney fire is increased.

Class A chimney pipe requires  2 inches of clearance to combustibles.

Fire -> stove pipe -> ceiling support box/ round ceiling support piece -> Class A