Home
Back
Trex Deck Board Spacing Formula:
| From: | To: |
Proper spacing between Trex deck boards is essential for drainage, expansion, and contraction. The recommended gap helps prevent water accumulation and allows for natural movement of the composite material due to temperature changes.
The calculator uses the spacing formula:
Where:
Explanation: This calculation ensures even spacing between all boards while accounting for the total available space.
Details: Correct spacing prevents buckling, allows for water drainage, and accommodates thermal expansion. Trex typically recommends a 1/8" to 1/4" gap between boards depending on installation conditions.
Tips: Measure your total deck width accurately. Know the exact width of your Trex boards (typically 5.5" or 7.25" for most products). The calculator will determine the optimal gap between each board.
Q1: What is the recommended gap for Trex deck boards?
A: Trex typically recommends a 1/8" to 1/4" gap between boards, but always check manufacturer specifications for your specific product.
Q2: Why is spacing important for composite decking?
A: Proper spacing allows for drainage and accommodates thermal expansion and contraction of the material.
Q3: Should spacing be different in different climates?
A: Yes, in areas with greater temperature variations, slightly larger gaps may be needed to accommodate more expansion.
Q4: How do I maintain consistent spacing during installation?
A: Use spacers specifically designed for decking to ensure consistent gaps between all boards.
Q5: What if my calculated spacing doesn't match manufacturer recommendations?
A: Adjust the number of boards or consider trimming boards to achieve both proper spacing and coverage.