Patio Doors Have Unique Lock Challenges
Patio doors aren't like front doors. They have larger glass surfaces, lighter frames, often double-door (French) configurations, and frequently use multipoint locking systems with three or more locking bolts engaging at different points up and down the door. When something goes wrong, the symptoms can be confusing — the handle works but the bolts don't throw, the door is hard to close, or one side won't lock at all.
We diagnose and repair all common patio door lock problems on Auburn-area homes:
Common Patio Door Lock Problems
- Handle moves but bolts don't extend — broken gearbox or stripped drive
- Door won't close fully — misaligned multipoint mechanism, weatherstripping issues, or frame shift
- Lock won't turn or feels gritty — corrosion or grit in the cylinder, or worn pins
- Key sticks halfway and won't extract — pin damage, worn key, or internal jam
- Inactive panel (in French door pair) won't lock or unlock — flush bolts at top and bottom seized or misaligned
- Old wooden patio door bolt sticks — frame swelling or hardware fatigue
- Door 'sags' and rubs on the threshold — hinges and lock points are working against each other
Multipoint Systems We Service
Most modern fiberglass and steel patio doors use proprietary multipoint locks from Andersen, Pella, Marvin, Therma-Tru, JELD-WEN, Hoppe, Roto, G-U, and Maco. We carry common replacement parts and can source brand-specific gearboxes when needed. Where the manufacturer no longer makes the original part, we know which aftermarket replacements actually fit.
Upgrades While We're There
Patio door security can be significantly improved with a few simple additions:
- Auxiliary slide bolts at top and bottom
- Long-screw reinforcement on strike plates
- Hinge-side reinforcement for outward-opening doors
- Anti-lift bars for older designs
Call (253) 796-8550 for patio door lock service anywhere in Auburn.
