Why Your Sliding Window Is Hard to Open in Dubai
Sand in the track and worn rollers are the usual causes of a stiff sliding window in Dubai.
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Fine desert sand packs the bottom track and acts like grit under the rollers. Heat also dries out and wears the roller wheels.
Vacuum the track and wipe it clean first. If it still drags, the rollers or the sash alignment need a technician. Do not force it.