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: normal wear in accessible moving hardware or loose compatible fixings or adjustment points.
Explain how the screen is accessed and whether removal is possible from a safe position. Upper-level or inaccessible screens may fall outside ordinary access. The quote should identify accepted screens rather than assume every window at the property can be reached.
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.
Handle the screen by its frame and follow mesh care instructions. An insect screen is not a security barrier or fall-prevention device. Limits: Ordinary insect mesh and compatible screen frames only. No security screens, fall-protection claims, specialist glazing or inaccessible high-level work.