Doors & Windows snags

The mechanical category — locks that don't engage and frames that bind are easier to fix while the trades are still on site.

What to check

Alignment
Doors that bind on the frame, gaps that vary along the edge, sashes that don't sit square in the frame.
Locks and handles
Every key turns, every multi-point lock engages, every handle returns properly. Test every door, every window.
Seals and gaskets
Window rubber seals continuous and unpinched, door draught seals seating properly against the frame.
Scratches on glass
Inspect in different light and from different angles — easier to spot at certain times of day.
Operation under load
Open and close every door and window in a single walk-round. Issues that don't show up day-to-day surface here.

Example of a doors and windows snag — a door binding on its frame

What’s normal vs. what’s a snag

See the full explanation of NHBC viewing distances, allowed tolerances and where to push back in our pillar guide: What “within tolerance” really means →

Related categories

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