Final answer:
The correct answer is option d. prevents squeaks and increases the floor stiffness. Gluing plywood to the floor joists prevents squeaks and increases the stiffness of the floor, enhancing the overall structural integrity.
Step-by-step explanation:
When constructing or remodeling a home, attaching plywood subflooring securely to the floor joists is a vital step. By gluing the plywood, you not only provide structural support, but you also prevent squeaks which can occur when there is movement between the plywood and the joists. Furthermore, this method of installation creates a more rigid and stable floor, which enhances the overall integrity of the flooring system. While it might have an upfront cost, this practice can save money in the long run by reducing future repairs and maintenance issues related to a squeaky or unstable floor. When plywood is glued to the floor joists, it also helps distribute the load more evenly, making the floor more resistant to flexing. This can contribute to a more durable and longer-lasting floor.
However, it's important to note that gluing plywood to the floor joists alone may not provide sufficient insulation. Proper insulation materials should be installed separately for effective insulation.