International Compliance Association (ICA) Home Inspector Practice Exam

What is the recommended minimum height for guardrails on decks?

1. 30 inches

2. 36 inches

3. 42 inches

4. 48 inches

The correct answer is: 42 inches

The recommended minimum height for guardrails on decks is 42 inches. This height is established to ensure the safety and protection of individuals using the deck, particularly in preventing falls from elevated surfaces. The increased height compared to lower standards helps to accommodate a wider variety of users, including children and adults, and to provide an additional safety margin. In many building codes, a guardrail height of 42 inches is considered effective in reducing the risk of falls, as it discourages individuals from leaning over the edge and enhances overall safety. The height is designed to provide an adequate barrier without being overly restrictive or imposing. Other options suggest lower guardrail heights, which may not meet current safety standards established by building codes or best practices. These lower heights could potentially expose individuals to a higher risk of falls, especially in situations where the deck is significantly elevated above ground level.