We are independent & ad-supported. We may earn a commission for purchases made through our links.

Advertiser Disclosure

Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.

How We Make Money

We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently from our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What is a Subfloor?

Malcolm Tatum
Updated May 17, 2024
Our promise to you
About Mechanics is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At About Mechanics, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

A subfloor is a type of construction that is used in many different types of residential and commercial buildings. As the name implies, a subfloor is an additional layer of flooring that is placed directly on the floor joists, then covered with a second layer that serves as the visible floor in the structure. The use of this type of flooring construction helps to add stability to the floor as well as improve the chances of the flooring remaining level over the long-term.

A number of different materials can be used to create a subfloor. One of the most common is the use of plywood sheeting. The plywood subfloor is attached to the floor joists, typically with nails. At times, wood glue may also be used to position the plywood sheets. Once in place, the plywood is covered over with an additional layer of some type of flooring, which may or may not be some type of wood product. After the top layer is in place, the floor can be covered with carpeting or tile. If the top floor is some type of hard wood, the builder may choose to sand, finish and seal the top layer, allowing the natural beauty of the wood to add character and visual appeal to the room.

It is also possible to use concrete to create a subfloor. This approach is very common in basements and bathrooms. Here, the idea is to use the concrete to create a stable base for the flooring, then cover it with stable materials before adding any decorative touches. For example, a bathroom subfloor may provide the foundation for adding a second layer of concrete that in turn provides the means for securing tiles to the top layer of flooring. The basement subfloor may provide support for a layer of wood that is either left exposed, painted, or covered over with carpeting.

There are two main advantages associated with the subfloor. One has to do with making sure the floor remains stable over a number of years. The presence of the floor helps to spread the stress on floor joists more evenly, which in turn helps to slow the deterioration of those joists. A second benefit of this type of flooring strategy is that the potential for sections of the floor to shift and slope over the years is reduced. While the installation of a subfloor does add some expense to the cost of the building project, that expense is easily justified by the years of enjoying a floor that remains level and strong even with constant use.

About Mechanics is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Malcolm Tatum
By Malcolm Tatum , Writer
Malcolm Tatum, a former teleconferencing industry professional, followed his passion for trivia, research, and writing to become a full-time freelance writer. He has contributed articles to a variety of print and online publications, including About Mechanics, and his work has also been featured in poetry collections, devotional anthologies, and newspapers. When not writing, Malcolm enjoys collecting vinyl records, following minor league baseball, and cycling.

Related Articles

Discussion Comments

Malcolm Tatum

Malcolm Tatum


Malcolm Tatum, a former teleconferencing industry professional, followed his passion for trivia, research, and writing...
Learn more
About Mechanics, in your inbox

Our latest articles, guides, and more, delivered daily.

About Mechanics, in your inbox

Our latest articles, guides, and more, delivered daily.