If the problem is with the foundation, it is likely that your home has settling issues. When a house settles, it can cause cracks in the foundation. These cracks can then cause the windows to stick. If you think that your sticking windows are due to foundation problems, you should consult a foundation repair professional.

If the window is the problem, there are a few things that you can do to fix it. First, check the tracks for any dirt or debris. If there is anything in the way, remove it and clean the tracks with a soft cloth. You may also need to lubricate the tracks. You can use WD-40 or a silicone-based lubricant for this. If the problem is still not resolved, you may need to replace the tracks.

In some cases, the window may be sticking because of the frame. The frame can warp over time, which can cause the window to stick. If this is the case, you will need to replace the frame.

Once you have determined the cause of the sticking, you can take the necessary steps to fix it. If the issue is related to foundation settlement, the best course of action is to consult a residential foundation repair expert to determine how to fix sticking sliding windows. Depending on what’s causing your foundation to settle, the experts can make a recommendation for foundation repair that fits your situation and budget.