Flexible metal ducting for bathroom extraction

[morqthana]

Should it be:

a) Stretched out as much as possible

b) Left as concertinad up as much as possible

c) Either - it doesn't matter

 

[jj4091]

Will it be supported along it's length?

 

[Murdochcat]

Should it be:

a) Stretched out as much as possible

b) Left as concertinad up as much as possible

c) Either - it doesn't matter

you need to describe the set up BUT you do not want the vent pipe to be any longer than necessary as it will impair performance

 

[foxhole]

Fully extended , though metal variety not ideal for bathrooms , its cold and promotes condensation , make sure it has a fall to exit point .

 

[BigClick]

Is it actualy Insualted aluminium rather than plain metal?

 

[jj4091]

Is it actualy Insualted aluminium rather than plain metal?

Never seen insulated "concertinard" ducting.

 

[opps]

you need to describe the set up BUT you do not want the vent pipe to be any longer than necessary as it will impair performance

Fully expanded or not, surely the length of the run will be the same?

 

[morqthana]

Fully expanded or not, surely the length of the run will be the same?

Well, yes - I had been going to reply to Murdochcat to say that if I stretched it out I would cut it to length, not coil it up.