sm_jamieson wrote:
I will be fitting a cooker hood (not done one before). I guess it will
be one with a squarish brushed metal riser. Some questions:

1. Is the fan usually integrated into the hood, or is it above the
hood in the riser, or in the ceiling ?

In the ones I've fitted its in the hood.

2. The first stage will be to fit the ducting into the ceiling so the
ceiling can be plastered up etc. There will basically be a stub of
pipe sticking downwards out of the ceiling. When you later come to fit
the hood and riser, how much tolerance do you get left or right to
position it ? For example, assuming a flexible pipe is used for part
of the connection, you could move the duct left or right by about
inside riser width - outside duct width / 2.

Usually connected by a flexible connector, the sheet metal riser is just a
cover. An inch each way should be about right.


--
Dave - The Medway Handyman
www.medwayhandyman.co.uk