Wood heater flue replacement

[bricks]

Now, under the standard, there has to be a 25mm (1in) minimum separation between the outer casing & any combustible material.

Two questions clif- is your flue single skin or double skin?
Is it bigger than 150mm and single skin?

If it is then the required clearance is now 75mm

Nice work tho bloke, I do roofing a fair bit and I'm not too proud to admit it aint my strong point. Usually the faster I work, the longer it takes me.
well done.

[Cliff Rogers]

Two questions clif- is your flue single skin or double skin?

Double, it has an outer & an inner casing & the active goes inside that.

The old one had been there nearly 20 years & it was a single skin, 230mm casing with a 115mm active & the casing was screwed directly to the hardwood frames in the roof & they had barely even changed colour & we have had the active glowing in the dark.

Nice work tho bloke, I do roofing a fair bit and I'm not too proud to admit it aint my strong point. Usually the faster I work, the longer it takes me.
well done.

Ta, Journeyman Mick gave me the tip on the turned up flashing.
He said to try to do your roof penetration as though silicon sealant didn't exist & then it wouldn't leak, thanks Mick.

I did the same trick for my exhaust ducting roof penetration.

[bricks]

looks like you have it all under control,

[wonderplumb]

Roofing isnt my strong point either, I like doing gutters and downpipes etc but anything too involved in the roofing dept. goes to the professionals.

[bricks]

I'd prefer someone else did it most of the time too.

[jack620]

I wouldn't join them together as the expansion & contraction of the roof sheeting would push & pull the casing around.

That's what I figured. I notice the document you linked to says the Standard requires the flue to finish 4.6m above the hearth. Mine is nowhere near that tall. Seems the bloke who installed mine didn't know his a#*@ from his elbow. He also used bugle-head screws to join all the pieces together which will make sweeping the flue interesting.

Looks like I've got some work to do.