Finish TradesQuestion 477 of 700
On the garage side of a wall separating an attached garage from the dwelling, gypsum board used for the required separation must be at least what?
a.1/4-inch regular gypsum board
b.5/8-inch Type X gypsum board
c.1/8-inch hardboard paneling
d.3/8-inch regular gypsum board
Explanation
The garage-to-dwelling separation must be protected with at least 5/8-inch Type X (fire-rated) gypsum board on the garage side. Quarter-inch or 3/8-inch regular board and thin hardboard paneling do not meet the required fire-resistance for this separation.
Law Reference: 2025 CA Residential Code §R302.6Practice all 700 questions free — no signup required.
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