"MarkK" wrote in message
news
"JoeFaeGlesga" wrote in message
ups.com...
Hi all,

I was planning on flooring my loft but there seem to be a lot of cables
crossing the beams. Obviously whoever rewired the house didn't really
use the loft so just threw the cables wherever to get to their
destination. IS it a difficult job to reroute these along joists etc.
Was maybe going to get a spark into do it but no idea the complexity of
th job....

Any advice appreciated.

Joe.

If you just board over the existing joists you won't be able to
accommodate
the recommended depth of insulation. What I'm planning to do with mine is
fit 8"x2" (8" side vertical) at right angles to the existing joists, 370mm
apart. This conveniently allows the lighting electrics to be left as-is.
There's enough slack to allow it to be moved aside where necessary. I'll
then fit insulation, then put chipboard over it. That'll give me 11" of
insulation (270mm is recommended, this is a little more) and all the
storage
I need.

If you want to re-wire, allow 1-3 weekends (depending on house size), a
reel
of 1mm sq T&E and maybe some junction boxes. It's not hard assuming you
understand a) how a lighting circuit is set up, b) how your particular
house
has been done & c) are competent!

Use 1.5mm. Oversize because of being covered in insulation. It is called
derating.