Chimney hood external ducting

Eastender

I'm fitting an external ducting for our new chimney hood in the kitchen but unsure as to which type is best. There flexible pipes, round rigid and rectuangular pipes and they vary 4" to 6" in diameter.

I looked on various sites and most recomend round rigid with 6" in diameter, has anyone fitted flexible ones, as they easier to install.

The problem is that I'm sensitive to cooking smells and like to remove the best way possible.

Cheers.

cyclonebri1

Hello again eastender, :T

Ok, forget flexible stuff, unreliable, tears, and can can let moisture (condensate) into the building fabric.

Rigid pipe every time.

Clue is, if the uniit outlet is 4", then 4" dia or equiv flat id fine, if the outlet needs 6" then go that way.

Round is best, best flow and the cheapest. Flat if you have space issues.;)

Is this diy or is the fitter doing this?????

Eastender

cyclonebri1 wrote: »

Hello again eastender, :T

Ok, forget flexible stuff, unreliable, tears, and can can let moisture (condensate) into the building fabric.

Rigid pipe every time.

Clue is, if the uniit outlet is 4", then 4" dia or equiv flat id fine, if the outlet needs 6" then go that way.

Round is best, best flow and the cheapest. Flat if you have space issues.;)

Is this diy or is the fitter doing this?????

Thanks for the reply.

yes, I'm am afraid my builder is going to do it, he was keen on flexible piping, as it's probably simpler and done it before in other homes, whose owners may don't care if it's flexible or not.

I've been to Wicks and B&Q to purchase but I find 4" versions but my chimney hood prefers 6" pipes.

Even went to Selco, a builers merchant but only 4" versions.

Where is the best place to get them?

southcoastrgi

do you mean you are just running the duct direct from the hood straight through the wall to terminate or are you running the duct along the wall on the outside ?

Eastender

southcoastrgi wrote: »

do you mean you are just running the duct direct from the hood straight through the wall to terminate or are you running the duct along the wall on the outside ?

It's the latter, along the kitchen wall and then outside. The kitchen sink has taken the top spot for direct the wall extraction.

southcoastrgi

Eastender wrote: »

The kitchen sink has taken the top spot for direct the wall extraction.

is it just me or does this not make any sense ?, so if i understand you, the duct will be run internally (maybe across the top of wall units) then turn & go directly out the wall ? is this right ?

Eastender

southcoastrgi wrote: »

is it just me or does this not make any sense ?, so if i understand you, the duct will be run internally (maybe across the top of wall units) then turn & go directly out the wall ? is this right ?

Yes, will run internally across the top of wall units and then turn and exit outside wall.

southcoastrgi

then i'd follow post number 2

diywhynot

OP: can't your builder source instead of you scouring the sheds?

southcoastrgi

diywhynot wrote: »

OP: can't your builder source instead of you scouring the sheds?

oh dear i am so sorry to laugh at your post :rotfl:

cyclonebri1

diywhynot wrote: »

OP: can't your builder source instead of you scouring the sheds?

:rotfl:
If you follow eastenders series of posts it seems the builder can't speak a word of English, I know, I know, but it's true.:rotfl::rotfl:

Still, trying to stop laughing:rotfl:

Eastender, you don't want the flexible stuff running along the top of the units, it collects muck and grease in the corrugations, it's the wrong stuff for a kitchen extractor

And you don't want it running through the wall, even in bathrooms where the air is clean but wet, it's normal to use soild pipe in the wall, if the flexible stuff rips in the wall you'll get damp in the cavity.

I can only assume the extractor is on an internal wall so has to go to the nearest ext 1??
The rectangular stuff is designed for this situation as it sits neatly on the unit tops, but I'm unsure if it's available in the size you require.

Keep em coming,:T:T:rotfl:

Can I ask in addition, I/we have expected a disaster story to have been posted by now, so, hows the work going??