Boiler flue within new extension

[matlob]

Hi
I'm building a single storey extension onto the gable end of a property

I've got the shell up and just about to put the roof on. It's a vaulted pitched roof.

The boiler flue currently comes out of the gable end approx 2 meters high

Is there anyway you can temporarily redirect a flue. I'm not looking to knock through the gable end until the new year and eventually a new boiler will be installed within the extension with a flue on a different wall.

There is an opening (1800 wide) within the extension about 1.5 meters away from the flue

Not sure how best to do it

Thanks for any help

 

[cross thread]

Maybe possible depending on the boiler make and model

 

[matlob]

Thanks, will check the make. Think it's a greenstar 32.

 

[^woody^]

If I recall, its 6m for a 100mm flue and 10 or 15m for a 125mm flue horizontally or vertically. Each bend counts as 1m.

Needs to be done by a Gas Safe engineer, and will require properly supporting and terminating as if its the final position - ie not just hanging and poking out the opening randomly.

 

[matlob]

Thanks both

Below is where it sits within the extension, so the flue is on the gable of the existing house

The room won't be used until the boiler is moved which is when we will knock through into the main house

If we were to leave the openings fully open (not fit the doors, each opening 1800 wide) could we still add the roof?

Don't mind a hole in the roof but need to obviously tile from the bottom up and add membrane etc so tricky to patch later

Boiler will eventually move to the left side of the door on the side of the house

 

[danfre]

No, do not use the boiler.

 

[matlob]

Thanks, will get an engineer over to have a look as I'm stuck without a roof otherwise

 

[^woody^]

The boiler needs air input, and that may not mean the exhausted air lingering in the enclosed space. But yes, get an engineer and a certificate, not just a "Yeah mate, that will be OK".

 

[cdbe]

By the time you've paid for flue extensions etc you might be better getting the new boiler fitted and weatherproofing it.

 

[matlob]

Thanks all

Just didn't want to knock through the gable yet but may be able to just do a small hole in order to runs the pipes through for now in order to install the boiler and make everything watertight


Another thought is a vertical flue through the roof as below.

Obviosuly getting someone out but the below could be better as it would direct the flue away from the side of the house too.

Are vertical flues ok to use?

Thanks again

 

[cdbe]

Vertical flues are fine - a bit more expensive plus the flashing through the roof.

I like your drawing, at first I was going to warn you not to leave your hammer up there!

 

[matlob]

Thanks, will get someone out to advise!

 

[noseall]

I was going to warn you not to leave your hammer up there!

..or your willy sticking out by that (green) boiler.