Why Does a Sliding Glass Door Suddenly Become Hard to Open?

[NightHollow]

A sliding door can gradually go from moving smoothly to requiring both hands just to open it. Is that usually caused by worn rollers, damage to the track, poor alignment, or a combination of several problems? The site highlights worn rollers and damaged or corroded tracks as common causes of sticking and grinding.

[rzaasiriy985]

Worn rollers are usually the main culprit. I had the same issue and got it fixed by a professional service at https://apolloslidingdoors.com/ — they replaced the rollers with marine-grade parts and it slides smoothly now. Track damage can also contribute, so check both.