Strangled extractor fan vent . . . . . (photo included)

[TheSalad]

We moved in to our new build home just over two and a half years ago. We needed an outside tap in the back garden so had a local plumber fit one for us (a nightmare as the feed was from a bathroom in the middle of the house). Anyway . . . . our plumber has done a great job but as he fed the pipe under the rear bedroom floor he came across this . . . .

. . . its the vent pipe from the extractor fan from the downstairs loo, it exits at the back wall of the floor of the same rear bedroom but look . . . just before it vents it turns 90 degrees to the left almost strangling any opportunity for the air to vent??? This can't be good can it??

Any views ? View media item 19378

 

[Johnmelad502]

We moved in to our new build home just over two and a half years ago. We needed an outside tap in the back garden so had a local plumber fit one for us (a nightmare as the feed was from a bathroom in the middle of the house). Anyway . . . . our plumber has done a great job but as he fed the pipe under the rear bedroom floor he came across this . . . .

. . . its the vent pipe from the extractor fan from the downstairs loo, it exits at the back wall of the floor of the same rear bedroom but look . . . just before it vents it turns 90 degrees to the left almost strangling any opportunity for the air to vent??? This can't be good can it??

Any views ? View media item 19378

Can't see the 90 degrees!

 

[Trazor]

It's difficult to accurately see what is happening, but obviously you have some constriction.
What is that chipboard with 4 holes in doing ?

 

[crank39]

It's difficult to accurately see what is happening, but obviously you have some constriction.
What is that chipboard with 4 holes in doing ?

Thats a floor joist, with half its strength taken out of it

 

[Burnerman]

Thats a manufactured joist, with a huge hole cut in it for the duct.....not recommended really - although its probably stronger than the traditional joist.
John

 

[Trazor]

It's difficult to accurately see what is happening, but obviously you have some constriction.
What is that chipboard with 4 holes in doing ?

Thats a floor joist, with half its strength taken out of it

That's what I thought, but hoped I was wrong.
Probably lost 90% of its strength.

 

[Nige F]

One for the NHBC

 

[foxhole]

The joist appears to be cut right thru, the upper and lower timbers are all thats keeping the floor up, the least of your worries are the state of the vent.

 

[TheSalad]

I see what you're all saying about the potential weakness of the joist.

Is it serious?? We're in the house three years now and builders are long gone, were a pain to deal with when we were dealing with the snags we could see let alone those hidden under the floor.

 

[crank39]

Time to ring Holmes on homes

 

[gday2uk]

Please note rule 9 (Please do not use excessive quoting in your posts.) - See here for the forum rules.
-
please use the "post reply" button not the "quote" button

Surely qouting once is not excessive?

 

[foxhole]

I see what you're all saying about the potential weakness of the joist.

Is it serious?? We're in the house three years now and builders are long gone, were a pain to deal with when we were dealing with the snags we could see let alone those hidden under the floor.

Any large hole should be centred between upper and lower timber and not exceed specific size for beam, no large hole [over 20mm] should be closer to the next hole by less than the depth of the beam i.e a beam 300mm deep should not have large holes closer than 300mm from each other, your beam seems to breach those guidelines.
As mentioned above, worth contacting NHBC.Though would'nt hold my breath.

 

[mattylad]

Given that the builder is long gone,what would be the point of contacting the NHBC?

I'd have thought that getting it repaired might be the best action to take?

 

[foxhole]

http://www.nhbc.co.uk/Warrantiesandcover/