Quick answer: Fresh-sawn wood is full of water and shrinks as it dries. Lumber for furniture is air-dried and/or kiln-dried to about 6–9% moisture so it stays stable indoors. Properly dried boards keep tables flat, joints tight and drawers sliding smoothly for decades.
Why it matters
A thick solid wood table built from wet lumber can cup or crack once it meets indoor heat.
Drawers and doors
Stable wood keeps the doors of a sideboard or TV stand hanging true.
Shelves
Dry boards resist sagging under weight on a floating shelf.
At home
Keep indoor humidity around 35–55% and away from heat vents to keep your furniture happy.
Frequently asked questions
Will my furniture still move a little?
Yes — solid wood expands and contracts slightly with the seasons; that’s normal.
What causes cracks?
Very dry air and direct heat; a humidifier helps in winter.
Is kiln-dried better than air-dried?
Both work when the final moisture content is right.
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