Installing woodburner - collar?!

[RS_Pete]

4 hours ago, LadyG said:

Is this the wooden deckhead (ceiling) or does the boat have a wooden roof?

PS the greinies and their accolites are 'like' button equivalents.

Hi,

It has a wooden roof.  A lot of wooden roof........

Replacing the roof with steel isn't an option so I have to repair and make do for now. (Besides I kind of like the perversity of it)

I have a stove with a 125mm (5" ) flue. The old stove was a 4" flue which in hindsight might have been sensible to source another the same.....

On the roof there is a 4" cast Chimney collar (approx 4.75" internal diameter) and buried in the engine room I found another with a larger ID that looks like it might just take a 5" flue. 

Just.

So how much clearance between flue and collar should I be looking for? Obviously with this it can only be single skinned....I think.

 

Or do I need to get something fabricated?

(Thanks for the tip on the greinies?!)