Tim S wrote:

Other Tim: Something like that might work - as you can see in the picture
outside, the gutter does provide a fair degree of guarding against direct
exposure to rain. The louvred vents might just finish off a well placed
slot.

Just found:

http://www.smartmarine.co.nz/louvre-...vc-p-1459.html

- don't know if there is a UK supplier. but would be dead easy to fit
loads with a holesaw...

--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/