Fan needed?

[Cirrus]

Working for a builder and the customer is a property surveyor. They are fitting a recirculating cooker hood and say there is no need under Part P to have a separate kitchen fan venting out to air. As I understand it, adequate ventilation out to air must be provided or am I misinterpreting things? The job for the builder is a full kitchen / extension refurb with new electrics.

 

[Zeespark]

A filter on the hood can be used instead of an outside extractor fan as fas I am aware on rewires.

Andy

 

[ProDave]

Not in Scotland it can't. Might be different down south, but up here there definitely needs to be extracted air from kitchens, bathrooms and utility rooms.

As above, it all depends if this is a new built or just a rewire. If a rewire then it's up to you what you do, but a new build or refurb that otherwise involves building control will need to meet the regs.

 

[Cirrus]

This is a new build extension which adjoins an old kitchen which has been gutted and rewired etc. The rooms are both open plan leading on to each other.

 

[mapleford]

Check Building Regs Part F (try planning portal)

 

[Stevie h]

Every kitchen extension iv work has had to have outside extraction , building control won't pass the job off with out it.

Ste

 

[Sidewinder]

Is it not to do with ventilation for moisture which a recirc hood will not address?

I'd have to look it up, not now!

 

[NozSpark]

Do you really have to bring the building up to current building regs because you are rewiring it??

I thought,,,, that so long as it is no worse in compliance with the building regs to what it was before then it's ok (isn't it?)

 

[Sidewinder]

Pretty much as I thought Noz, though there are a few exceptions like very rule are there not?

 

[Stevie h]

Is the kitchen going to be in the new extension ? if it is I would put outside extraction , no question , but if the kitchen is not in the new part of the build ( just a kitchen refit ) then you probably have a good case to argue , but if possible I would still put outside extraction in.

Ste

 

[Cirrus]

Tricky one. The kitchen will be where it always has been, but with an extension which doubles the size of the room so it becomes a kitchen / lounge area with no doors separating either room.

 

[NozSpark]

If the cooker hood is going on an external wall then just do as they ask,, you can always core a hole through in the future if needed!

but IMHO I'd recommend venting it to outside

---------- Post Auto-Merged at 23:09 ---------- Previous post was made at 23:07 ----------

Just read your latest post..

I think that their LABC would class this as a change of use, so it will need to comply

 

[Cirrus]

Cooker hood is going in the centre of the room with no possible way to vent outside now. I have wired an FCU in place for a wall mounted fan too but the builder / owner say they don't want / need it. Think I will state my case and if they insist then it's their problem if BC refuse to pass the building works.

 

[NozSpark]

The FCU sounds like a good plan..

TBH if I were you then I'd make sure that the client knows of your concern and try and get them to check it out by phone (annonomusly if needed)

 

[Theorysparky]

I recently did a refurb on a house and they put a toilet downstairs with no windows

Asked the question as to whether it needed external ventilation the said as it had no window it no acceptable ventilation

if it had a window it would have been ok

interpretation of the regs !!! again

 

[Doc Hudson]

Working for a builder and the customer is a property surveyor. They are fitting a recirculating cooker hood and say there is no need under Part P to have a separate kitchen fan venting out to air. As I understand it, adequate ventilation out to air must be provided or am I misinterpreting things? The job for the builder is a full kitchen / extension refurb with new electrics.

Are there no plans for the building works? often these things will have been noted in the specifications on the plans that have already been passed by LABC to allow the building works to proceed.

Doc H.

 

[Cirrus]

No detailed plans Doc. However, got in this morning and the builder had changed his tune and decided it might be best to have a fan afterall!

 

[Doc Hudson]

No detailed plans Doc. However, got in this morning and the builder had changed his tune and decided it might be best to have a fan afterall!

Ah problem solved, If the builder had still been unsure and no details on plans I would probably have rung the LABC let them decide if they are going to insist on installing one.

Doc H.

 

[SteveT]

as an aside -

In middle of wiring new build with heat recovery unit (HRU), this extracts moist warm air, removes water and recirculates dry warm air. Building inspector has staed no ned to fit extractors to kitchen, either bathroom or understairs loo (all have extract flues to HRU)

I cant see how this would work unless the HRU was on at the time each was in use!!!

However the BCO MUST be correct!!!!!!!!

 

[ianmacd]

The HRU should run constantly and be able to 'go faster' either with a manual switch or a moisture sensor.