Deck Railing Material Calculator
Standard Deck Railing
Calculate materials for standard baluster railing
Baluster Spacing Calculator
Calculate exact baluster count and spacing for a section
Formula
Balusters = (Section Length - Gap) / (Baluster Width + Gap) | Actual Gap = (Section - n x Width) / (n + 1)
Frequently Asked Questions
How many balusters do I need per foot of railing?
With standard 2x2 wood balusters (1.5" wide) and code-maximum 4" gaps, you need approximately 2.2 balusters per linear foot of railing. For 3/4" metal balusters at 4" gaps, you need about 2.5 per foot.
What height does a deck railing need to be?
Most building codes require a minimum railing height of 36 inches for residential decks. If the deck is more than 30 inches above grade, railings are required. Some jurisdictions require 42-inch railings for decks higher than 30 inches. Always check local codes.
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