The answer to 'patio installation bare spots' is that common causes include poor soil preparation, improper grading, and inadequate compaction. Symptoms include uneven surfaces, standing water, and patchy grass or weeds. Solutions may involve regrading, adding topsoil or compost, and properly compacting the base before laying pavers or pouring concrete.
For small bare spots, homeowners can often reseed the area, add topsoil, and overseed. For larger issues, it's best to call a professional landscaper to assess the problem and provide a long-term solution. They can ensure the patio is properly sloped for drainage and that the base is solid and stable before the final surface is installed.