marvelus wrote:
On 26 Oct 2006 00:02:19 -0700, wrote:
marvelus wrote:
On Wed, 25 Oct 2006 22:49:33 GMT, "The Medway Handyman"
wrote:
Ian_m wrote:
"The Medway Handyman" wrote in
message .uk...
My roof is slates, each held in place by a copper rivet. THe whole
roof apart from the actual copper rivet is covered in moss and lichen.
It doesnt work.
Unless there is a serious problem with your roof, rain doesnt wash over
the copper fixing.
YOu dont know how slates are attached I think 
There are two nails which are protected from rain and a rivet that
isnt.
I wonder if youre thinking of asbetos imitation slates. Real slate is
attached with a single nail at the top - at least on every slated house
round here I've ever seen anyway. Rarely one might find 2 hole fixing,
holes side by side at the top.
NT