"keithwood57" wrote in message
...

Now, this is a HUGE area of paving stones and, as the church is about
fifty years old, weeds have very seriously established themselves
between them. . . . if a weed-killer is suggested
it needs to be cost-effective.

Alternatively, try a propane torch, i.e. just burn up the weeds
(and sweep away the ashes if visible.). The vicar would probably
prefer you to test in an obscure corner, to be sure the heat would
not damage the paving stones.

--
Don Phillipson
Carlsbad Springs
(Ottawa, Canada)