Dave Liquorice wrote:
On Thu, 02 Nov 2006 23:34:40 +0000, Neil wrote:

Definately rodent and probably rat but difficult to tell without
anything of known size to scale the gnaw marks by,
I might take another pic with a scale marker...

Mice marks are two parallel channels about 1mm wide each. Rat each
channel 2 to 3mm wide, don't know what squirel damage looks like.

rats. squirrels are rats with tails.


Insulating jacket against the extremes of hot and cold in a loft, one
assumes? (this being a cold water tank afaict)

Yes, the lid is probably the most important to stop moisture entering the
roof space and condensing on cold areas.