Deck Board Spacing Calculator - Free Calculator
Calculate proper gap spacing for deck boards based on material and temperature. Get accurate estimates for your home improvement project.
Calculator Inputs
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How to Use This Calculator
Select deck board material and measure installation temperature. Calculator adjusts gap for thermal expansion and material characteristics.
Why Accurate Deck Board Spacing Matters
Deck boards expand and contract with temperature and moisture. Wrong gaps cause buckling (too tight) or excessive gaps (too loose). Material type dramatically affects movement.
Common Mistakes to Avoid
Not considering installation temperature, using same gap for all materials, butting boards tight, and not checking manufacturer specifications for composite.