Code requires balusters spaced so 4 inch sphere cannot pass through. Maximum 4 inches on center. Posts every 6 feet maximum, 4 feet better for stability. Rail height 36-42 inches for decks depending on deck height and local code.
Quick Tips
- Always order 10-15% extra materials for waste
- Check local building codes before starting
- Measure twice, cut once — verify all inputs
Frequently Asked Questions
Maximum 4 inches on center so a 4 inch sphere cannot pass through.
36 inches minimum for decks under 30 inches high, 42 inches for higher decks.
Maximum 6 feet apart per code, but 4-5 feet provides better stability.