Why are there gaps in my hardwood floor?

Gaps are often caused by changes in humidity—but the underlying cause isn’t always obvious.

Gaps appear when hardwood boards separate, leaving visible spaces between them. This is usually related to seasonal changes in humidity, but it can also result from installation or material issues.

Typical causes are:

  • Low indoor humidity
  • Seasonal expansion and contraction
  • Improper installation
  • Material acclimation issues

What you see is often a symptom — not the actual problem.

Why does a hardwood inspection matter?

Fixing the symptom without identifying the cause can make the problem worse.

  • Avoid unnecessary repairs
  • Avoid long-term damage

An inspection helps identify the cause before you spend money fixing the wrong problem.