About This Repair
The door to this room shut and would not open again. With no other way out, the people inside went through the small top sash above the window — the one that is there to let air in, not to be climbed through.
Opening it far enough to get out took it well past where the hardware is meant to travel. The sash is carried by a pair of friction stays, the flat scissor arms you see when the window is open, and they are what decides whether it drops back into the frame square. Pushed beyond their range, they bent.
After that the window would not close. It sat crooked with daylight along the top edge, which on a ground floor is three problems at once: the weather gets in, the heat gets out, and the window cannot be locked.
Friction stays are not one size. Length, stack height, the position of the fixing holes and the hand of the arm all belong to the joinery system the window was made in. Fit a near-enough pair and the sash sits proud of the seal — the gap has moved, not closed. So the sash came off the window and went to the company that manufactures this joinery, where the matching hardware was found against the real part rather than a photograph of it.
New stays on, sash back in, and adjusted until it pulls down evenly onto the seal the whole way along. It shuts flush and locks again. No glass was replaced and no part of the frame was touched.
