What is the primary purpose of using furring strips in wall installations?

The primary purpose of using furring strips in wall installations is indeed to level out irregular surfaces. Furring strips are thin strips of wood or metal that are attached to walls or ceilings to create a smooth and even surface for the application of wallboards, drywall, or other finishes. When the underlying structure is uneven or inconsistent, furring strips help to bridge the gaps, ensuring that the final surface is flat and uniform. This is crucial for both aesthetic purposes and functional installations, as it allows for better adhesion of finishes and also assists in creating an insulated layer or a space to run electrical wiring behind the wall surface.

While providing a foundation for insulation is a function that furring strips can support when positioned correctly, their primary role during installation is to address surface irregularities. Additionally, while furring strips may contribute to reducing moisture problems and can bear light loads, their main design purpose is not primarily for insulation or moisture barriers, but rather for leveling and preparing the surface for further construction or finishes. This contextual understanding reinforces why the correct choice focuses on leveling out surfaces during wall installations.