In article , stuart noble
writes
On 20/02/2013 21:06, fred wrote:

These are good:

http://www.saundersonsecurity.co.uk/...Window_Stop_SA
_822_52_SA.html



As the window opens, the lower sash covers the bottom part of the plate
which strengthens the retention of the stop if the window is forced.

Ditch the screws they come with, they are too weedy, I think I used 1
1/4" x 10 or possibly 12 to make them a bit more secure.

Always fit in pairs.

With respect to your friend I wouldn't leave any windows open when a
place is unoccupied, whatever the security fitted. IMO it attracts the
attention of thieves and once they take an interest they will find a way
in.

Stops are easily overcome by forcing the sashes apart, and a pinned bead
is all that prevents the inner sash moving

So don't just pin the beads?
--
fred
it's a ba-na-na . . . .