Need service in San Mateo?
Call 650-912-1817 to describe the problem and confirm current availability.
Call 650-912-1817 to describe the problem and confirm current availability.
Grinding or scraping
Grinding can indicate roller or track problems, binding hardware, or opener strain. Scraping that appears suddenly deserves inspection before continued use.
Popping or snapping
A loud sudden snap can accompany spring or hardware failure. If the door then becomes heavy or will not open, stop using it.
Routine noise versus a new symptom
Some operating sound is normal. A material change in volume, rhythm or vibration is more useful diagnostically than the mere presence of noise.