"PoP" wrote in message
...
On 27 Oct 2003 02:56:34 -0800, (Caher) wrote:
Firstly, should I drill from the inside going out or the outside
going in? And secondly are there any unforeseen complications that the
novice DIY person like me might miss and should I call a professional?
If it is a cavity wall then drill a long thin hole thru first, then
you can push the big drill thru from both sides to meet in the middle.
I assume you mean big drill means a core drill?
Normally you would put a pilot hole from the inside to the outside. You can
then put the fan where you want, but before you drill this hole you have to
check where the external grill is going to be. A tape measure and a few
windows and doors give a good reference point for the external grille. Also
watch out for concrete lintels. There is nothing worse than attempting to
put a fan just to the side and above a window. It will never work (been
there).
Another common mistake is to mount the fan higher than a window (in an
upstairs room) and you may find you have put the fan higher than the
soffiits (I have also been there).
HTH
--
Adam