NOCTI Carpentry Practice Exam 2025 – Complete Prep Guide

Question: 1 / 400

Which of the following describes the term 'sub flooring'?

Layer supporting the roof

Layer of material directly under the floor finish

Sub flooring refers to the layer of material that is directly under the floor finish. This foundational layer serves as a sturdy base for the finished flooring, which could be hardwood, laminate, tile, or carpet. The sub flooring is essential for maintaining the structural integrity of the floor system, providing support and stability. It helps distribute the weight of furniture and foot traffic, ensuring that the finished floor does not warp or buckle over time.

In addition to its supporting role, the sub flooring can also help in reducing sound transmission and enhancing the overall durability of the flooring system. It plays a crucial part in the construction process, contributing to the long-term performance and safety of the flooring installation.

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Layer for thermal insulation

Decoration on the walls

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