Alterations for a twin wall oil fired fue

[pault123]

Hi all

Being a "townie" I am GSR but never really have anything to do with oil.

Looked at a job for a builder before Xmas which is a 2nd storey extension, so my involvement is extra rads, move and add a cylinder, and fit a bth/shower room.

There's an oil fired boiler there with a twin wall flue passing through the single storey roof, which is where the second storey is being added, so the flue needs extending through another floor & out through the new roof. (it may need to offset at 1st floor level to achieve this).

Didn't take a lot of notice of the boiler and flue size as I didn't think I would be involved, so bit of a guess at flue size but external diameter was about 8" or 9".

Do you need to be OFTEC to undertake this work?, and if so does anyone want to hazard a guess at a ballpark figure for doing this?

I know it's a bit of "how longs a ball of string" but I'm a bit late getting figures in & the builder wants to submit his estimate. Quite happy to get the experts in or do it myself if thats legit.

Thanks

 

[Best]

As you are not sure what you are doing, you will need to get someone to check it over anyhow.
The height of the flue is limited to a certain max length, depending on what output oil boiler is, if it was a condensing type. It may be worth the owner considering having everything prepared for a condensing boiler, or fit one now, if it is a standard efficiency boiler there now.
I reckon you will need local building control approval, so if I were you I would ring them & ask. You really should get an oftec guy to have looked it over & helped you with the oil part.