WolfOfBakerStreet, good evening again.
As I understand things? there is one restrictor and one window catch?
If I am correct, the configuration of only one window catch may??? be the issue. It is a general rule of thumb that the sash should be held fast by two window catches sited about one third up and one third down, that way any twisting of the sash will be minimised.
One way of testing the above theory is simply to engage the window catch, then try to push top and bottom of the sash to see if there is any movement in the sash, no matter how small. If there is a movement then that could be the source of the problem, resolution would be to fit two window catches as described above.
If the above fails to pin point the problem use the push test to see if the entire window is moving?? that would be somewhat unusual??
Ken.
As I understand things? there is one restrictor and one window catch?
If I am correct, the configuration of only one window catch may??? be the issue. It is a general rule of thumb that the sash should be held fast by two window catches sited about one third up and one third down, that way any twisting of the sash will be minimised.
One way of testing the above theory is simply to engage the window catch, then try to push top and bottom of the sash to see if there is any movement in the sash, no matter how small. If there is a movement then that could be the source of the problem, resolution would be to fit two window catches as described above.
If the above fails to pin point the problem use the push test to see if the entire window is moving?? that would be somewhat unusual??
Ken.