In message , The Natural Philosopher
writes
On 23/06/2019 01:05, Dave Liquorice wrote:
On Sat, 22 Jun 2019 19:00:34 +0100, The Natural Philosopher wrote:

Sarking is ther to reduce wind speed and stop tiles being sucked off
Thought it was more as a secondary waterproof layer for when a
tile/slate slips/breaks or the wind is in the "wrong" direction and
blows water up and under the tiles/slates.
Also keeps the atmospheric fall out out of the loft.

Sarking has no single meaning beyond being something under the tiles or
slates.

Mostly in the UK its there to stop tiles blowing off.

It can do other stuff as well, though.

Dry blowing snow for example.
We once had 2" of snow in an unfelted (Edwardian built) loft.


--
Tim Lamb