Interesting Chat with Building Control

[Theorysparky]

Working on a 2 storey extension at the mo and i was having a 'conversation' with the builder regarding the utility room and for the need for an extractor fan

he was adament it needed one,,,,i disagreed because it had a door to the kitchen and a door to outside. I double checked and agreed to talk to BC when they came the next day

It needs one he said,,,,,i asked for clarification as it is an extension on an existing building......he looked and said no dont need one !!!!!!

thats good i said because i dont know where i was going to put the FCU and isolator..

What ? was the reply

manufacturers requirements i said,,,,,,,

i would have just put an isolator in and seperate on off switch ie 2 gang to control the fan WTF

He hated the fact that every time you put the light on to walk through the fan comes on and overruns for a time.....

Spot on

So who is in charge ?????

 

[ianmacd]

So why do you think it does not need an extractor?

 

[Megaohm7]

Does the utility room have a window ? . I've recently done an extension where the utility room is in the existing building which has a window.

 

[ianmacd]

Windows do not automatically preclude the fitting of a fan. The Approval Document says:

For sanitary accommodation only, as an alternative, the purge ventilation provisions (windows) given in Appendix B can be used where security is not an issue.

Utility room is not sanitary accommodation.

---------- Post Auto-Merged at 12:13 ---------- Previous post was made at 12:12 ----------

Does the utility room have a window ? . I've recently done an extension where the utility room is in the existing building which has a window.

You should have fitted a fan.

 

[ProDave]

Must be different down there. In Scotland, a utility room most definitely needs an extractor, and the extraction rate required is higher than a bathroom.

But I can honestly say the fan in my utility room has never been turned on.

BC up here accept separate switches for the fan, so you can turn the light on without the fan, or even turn the fan on without the light (if you've done a smelly )

 

[Evans Electric]

I thought all rooms with anything producing steam /condensation had to be fitted with mechanical ventilation .

So Bathrooms, utilities and kitchens .

Not sure about the khazi ,with or without Scotsmen "Doing smellies" .

 

[NozSpark]

Extractor fans are also for removing smells,,, not just moisture

 

[Theorysparky]

This utility room is 2.5m x 1.5m door to kitchen and external door

fridge freezer,sink,washing machine and tumbledryer vented through external wall

BC deemed it sufficient with the two doors

as for bathroom and new kitchen he was adament about the fans

i have tried reading AD F but cannot find it in black and white that this utility room in the extension needs a fan

if anyone can give me a concrete reference then its not too late to fit it (if the customer has the dosh)

By the way,,,this is not my job im just helpin out

 

[SLIPSHOD & SLAPDASH]

Westminster council prefer Pir or humidistat fans in bathrooms & toilets because people dont always turn the light on.

 

[ianmacd]

Did you open the doc? I posted an extract above that states that you can not use doors or windows as purge ventilation in a utility room (or kitchen) so intermediate extract is the only option.

 

[TonyCE]

The way I read it is that you have an "additional wet room on an existing building". Then from Part F Chapter 3.14 you can use purge ventilation (window) as per table 1.3 for each wet room with an external wall, install an openable window with no minimum size.

 

[gordy71]

?:| ? :| ?:| ? :| So who is right here? Everyone is saying different things and im getting confused! ROTFWL :good luck:

 

[Theorysparky]

?:| ? :| ?:| ? :| So who is right here? Everyone is saying different things and im getting confused! ROTFWL :good luck:

thats why i have raised the question

---------- Post Auto-Merged at 20:25 ---------- Previous post was made at 19:57 ----------

Ian is this what you are refering to ??

Pge 13

http://www.planningportal.gov.uk/uploads/br/BR_PDF_ADF_2010.pdf

 

[ianmacd]

thats why i have raised the question---------- Post Auto-Merged at 20:25 ---------- Previous post was made at 19:57 ----------

Ian is this what you are refering to ??

Pge 13

http://www.planningportal.gov.uk/uploads/br/BR_PDF_ADF_2010.pdf

No thats the 2010. I had 2006 and they have moved it all around.

Addition of a wet room to an

existing dwelling

7.11 The requirements for the additional wet room will be met by following the guidance in paragraphs 7.12 to 7.15.

7.12 Whole building and extract ventilation can be provided by:

a. intermittent extract, as given in Table 5.2a, and a background ventilator of at least 2500 mm2 equivalent area; or

b. single room heat recovery ventilator, as given in Table 5.2a; or

c. passive stack ventilator, as given in Table 5.2b; or

d. continuous extract fan, as given in Table 5.2c.

Guessing b, c & d are out so its a.

Intermittent extract

 

[Theorysparky]

Ian

Thanks for your replies and references

It concludes that an extractor fan is required

I must admit i didnt class a utility room as a wet room but after seeing it in black and white i stand educated !!!!!

 

[ianmacd]

For completeness for others, as Theory already knows this, ADF defines a wet room as:

Wet room is a room used for domestic activities (such as cooking, clothes washing and bathing) which give rise to significant production of airborne moisture, e.g. a kitchen, utility room or bathroom. For the purposes of Part F, sanitary accommodation is also regarded as a wet room.

---------- Post Auto-Merged at 06:21 ---------- Previous post was made at 06:18 ----------

Westminster council prefer Pir or humidistat fans in bathrooms & toilets because people dont always turn the light on.

Interesting, as ADF suggests humidistats should not be used in toilets:

Controls

Intermittent extract

 

[SLIPSHOD & SLAPDASH]

Interesting' date=' as ADF suggests humidistats should not be used in toilets:[/quote']

Wot i wrote was bad. I should have written, Humidistat fans in bathrooms & Pir operated fans in toilets :Salute

 

[ianmacd]

The way I read it is that you have an "additional wet room on an existing building". Then from Part F Chapter 3.14 you can use purge ventilation (window) as per table 1.3 for each wet room with an external wall, install an openable window with no minimum size.

Are you referring to this:

3.14 In general, new extensions to historic or traditional dwellings should comply with the standards of ventilation as set out in this Approved document. The only exception would be where there is a particular need to match the external appearance or character of the extension to that of the host building.

Only applies to listed type buildings not normal dwellings.

Actually, think you meant in the old doc

3.14 For purge ventilation, follow the guidance in Table 1.3.

That refers to Purge ventilation not Extract ventilation. You can not use Purge ventilation as an alternative to Extract ventilation in a non sanitary wet room.