island extractor

danemi1

Having an extension built - 21 ft 9 by 12 ft 1 - its going to be a kitchen diner - kitchen at one end will have an island....ceiling of room is going to be semi vaulted - ie it will look like the bottom of a Capital A - slanted up with velux roof across and slanted down again with a velux. Two questions...

A. Do I need an extractor (island) - chap in kitchen place said it was mainly when you had wall units so they didnt get all greasy. He said with it being a new build you would more than likely need a wall extractor expelair type thing so he didnt think we would need one

B. What sort would I get with the ceiling being higher due to the semi-vault

Really appreciate any and all help

Thanks x

MX5huggy

You don't need a cooker hood, but an extractor with a duty of 60 litres per second on a wall. If it is a cooker hood you have it only needs to be 30 litres per second.

I would not have a cooker hood in your situation.

danemi1

fab - I dont want one unless I have to - I was hoping to get lights above the island - dont know if it makes any difference at all but the hob is a 90cm neff induction hob

sunshinetours

I would consider what will happen when you cook smelly dishes or fry stuff as a fair bit of steam/smoke/smells can be produced that will go somewere unless directed somwhere.

CKdesigner

Hi Danemi1

You need a new kitchen designer!

The most important appliance, by far, in a kitchen is the extractor!

Think of it this way, you are spending thousands of £ on a nice new kitchen, so why would you not want to protect it from the grease, moisture and heat generated by using the hob?

There are 3 basic types of cooker hoods you can use with an island situation:

Standard chimney type hanging from the ceiling - you could use this but it sounds like you would need one made for you with a taller chimney section.

Down draft fitted into island worktop - You would need to fit ducting through the floor etc.

Ceiling extractor - this is fitted flush in the ceiling and is operated by remote control.

My choice in the situation you have described would be the ceiling extractor option as this I feel would be the most efficient system to do the job. Ideally you would have this with an external motor as this will be more powerful and virtually silent.

Don't forget technically the cooker hood should replace the air in the room 10 x every hour. Work out the cubic capacity of the room in M cubed then multiply by 10. Then this should give you the ideal minimum motor size.

Good luck

CK

MX5huggy

The most important appliance, by far, in a kitchen is the extractor!

When did that happen?

A kitchen without a oven and hob would not need an extractor.

My parents have never had one, the place is not a sticking mold pit. My grand parents never had them, they are all dead now but I don't think a cooker hood would have saved them.

ryder72

Second what ckdesigner has to say. Anyone claiming to be a kitchen designer and giving you the type of advise you have received cannot be taken seriously.

I think I remember reading a post saying you have purchased an ex-display veneered kitchen. Ask this kitchen designer what he thinks will happen in a years time when you have a years grime on veenered fronts. Stained veneered fronts

danemi1

aagh confused now - any suggestions or links to the hood that I would need please?

ryder72

Look for one with the highest extraction capacity you can find with the lowest noise level.

In your circumstances, with a vaulted ceiling, you may need to get an expensive bespoke one made to allow the for ceiling angle. Or you can your builders to create a timber frame with a flat base on which to mount your hood so that it stays parallel to the floor.

Duct it out is possible. If not, atleast ensure that you get a recirculating one with a charcoal odour filter and keep the grease filters regularly cleaned.

Meepster

Whilst LEGALLY you don't need a cooker hood, you do need ventilation in the kitchen, this can come from an opening window or another form of mechanical extraction (i.e. Expelair etc)

Mechanical extract fans
Any new kitchen, utility room, bath/shower room or WC with no openable window should be provided with a mechanical extract fan to reduce condensation and remove smells. The necessary performance of these extract fans is normally measured in litres per second (l/s) as follows:

• Kitchen - 30l/s if placed over the hob and 60lt/s if place elsewhere.
• Utility room - 30l/s
• Bath/shower - 15l/s with a 15 minute overrun (after the light is switched out) if there is no openable window.
• WC - 6l/s with overrun.

Alternative rates may be applicable if the ventilation is running continuously.

http://www.planningportal.gov.uk/permission/commonprojects/extensions/#Ventilation

However, not to have some form of extraction over a hob is not advisable, as this is where the majority of smells/steam is produced and if your opening window or Expelair is a fair distance away from the hob, you will be constantly suffering from condensation and lingering smells.

CKdesigner

MX5huggy wrote: »

When did that happen?

A kitchen without a oven and hob would not need an extractor.

My parents have never had one, the place is not a sticking mold pit. My grand parents never had them, they are all dead now but I don't think a cooker hood would have saved them.

I don't think a kitchen without an oven and hob can be classified as a kitchen anymore - can it?