a handle, latch, hinge, track or screen is visibly worn or damaged. Fit suitable mesh and spline to an accepted sound frame, or install a compatible ordinary supplied screen and check its fit.
Signs: the window does not close, catch or sit evenly as it did before or the window is stiff, loose or no longer moves through its normal range. Causes: loose compatible fixings or adjustment points or normal wear in accessible moving hardware.
Mesh needs suitable tension without distorting the frame. Corners and long sides should be checked during fitting, following the material requirements. Over-tightening is not a way to strengthen an old frame, and loose mesh may reflect a retaining-channel problem.
The retaining spline must suit the frame groove and mesh. Reusing a brittle or incorrectly sized spline can leave an uneven result. Keep any accessible product information and show the groove where visible, without damaging the frame to obtain a sample.
Fit suitable mesh and spline to an accepted sound frame, or install a compatible ordinary supplied screen and check its fit. Limits: Ordinary insect mesh and compatible screen frames only. No security screens, fall-protection claims, specialist glazing or inaccessible high-level work.