Cupping, Crowning, and Gapping: How to Prevent Moisture Issues

Moisture can cause some common—and frustrating—problems in hardwood floors, such as cupping, crowning, and gapping. Here’s what they mean and how you can prevent them.
What’s Happening:
• Cupping: When the edges of a board swell higher than the center.
• Crowning: The reverse—where the center of the board rises.
• Gapping: When boards shrink in dry conditions, leaving gaps between them.

How to Prevent These Issues:
• Maintain consistent indoor humidity.
• Acclimate your wood properly before installation.
• Use quality underlayment and vapor barriers to manage moisture.
A Quick Recap:
Keeping an eye on moisture levels and ensuring proper installation techniques will help keep these problems at bay, so your floors remain smooth and attractive.





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