Damp from the Eau Bourde valley works away at the mechanisms
The stream crosses the commune from west to east and shapes a cool valley floor, extended by the parks and wooded gardens Gradignan is known for. That permanent shade has a very practical consequence: exposed mechanisms dry out badly. A shed padlock, a gate lock or a garage door cylinder can stay damp for weeks on end, and corrosion sets in. The key first catches slightly, then has to be forced, then snaps clean off inside the barrel one frosty morning.
The most widespread reaction is also the most damaging: the oil can or the all-purpose penetrating spray. These products leave a greasy film that traps dust, pollen and plant debris — plentiful in an area this heavily planted — and turn light fouling into a complete seizure. A dry lubricant is the right choice, applied once a year to outdoor access points. And as soon as a key has to be felt for inside the barrel, it is better to deal with it straight away: at that stage it is still a matter of adjustment.
Original doors on the estates: what breaks and what can still be sourced
A large share of Gradignan's housing dates from the great waves of estate building between the 1960s and the 1980s, and many front doors, side doors and garage doors are the originals. The symptoms are easy to recognise: a handle that drops, a worn spindle, a bolt you have to help along, a strike plate out of line because the house has settled slightly and the area's clay soil has moved. The lock is not at fault, but it wears quickly in those conditions.
The question of parts genuinely arises with these older models. Some references are still available or have a compatible equivalent; others have gone from the catalogue, and the whole assembly then has to be replaced, adapting the strike plate and sometimes the door frame. This is a point the diagnosis must settle before anything is ordered, not while the work is under way. The detailed quote given before work begins explicitly separates repairing the faulty part from full replacement, along with what each of them involves for the joinery.
How does this service work?
Techniques, typical situations, standards and things to watch out for: it is all on our locksmith repairs page. This page focuses on what the service involves in Gradignan.