On 11/06/2021 15:29, Dave Plowman (News) wrote:
In article ,
John Rumm wrote:
For a verge you probably want a little bit of moisture in there to get
good suction onto the tiles, but yup a fairly stiff mix will be good.
(those premixed buckets tend to have some lime and plasticizer in the
mix already)

Yup. I'd say you want a mortar as flexible as possible and not too strong.
The ordinary mix most roofers seem to use on ridge tiles soon falls out.

No you want it as strong as hell.

Bill