The answer to 'why is my deck bare spots' is that bare spots on a deck are typically caused by wear and tear, sun damage, or poor drainage. Over time, foot traffic, weather exposure, and standing water can wear down the deck surface, leading to bare, worn-down areas. This is a common issue for older decks or those that haven't been properly maintained.
To address bare spots, you'll need to repair the damaged areas. This may involve sanding, staining, or replacing the affected boards. If the issue is due to poor drainage, you may need to adjust the deck's slope or install additional drainage solutions to prevent water from pooling. For more severe damage, you may need to consult a professional deck contractor to assess the extent of the problem and provide the best repair solution.