Business Advice4 min

Basement Sub-Flooring Options

Making a basement a usable living space that people can enjoy starts with the right sub-flooring option. Concrete is hard and uncomfortable. It’s porous and can be cold in the winter and musty in the summer. With the right premium grade sub-flooring installed correctly, you can achieve a comfortable floor that delivers warmth and enjoyment.  

What Is The Best Sub-Flooring Option?

Choosing a premium sub-flooring is always a good option, but it is almost a must when deciding what sub-flooring option is best for a basement. With moisture being an issue in basement spaces, LP Legacy® Premium Sub-Flooring offers the protection you need. Proven to be one of the stiffest sub-floors on the planet, LP Legacy panels are packed with more strands, resin and wax to provide exceptional resistance to moisture and edge swell. The resin uses a Gorilla Glue Technology®, which also contributes to outstanding stiffness. 

Often, codes require a greater-than-normal load-bearing capacity of the sub-floor or floor system for basements. As one of the strongest sub-floorings on the market, LP Legacy sub-flooring easily meets any code requirement when it comes to strength. Additionally, the panels are manufactured with remarkable consistency, making it easier to level the floor.

Best Practice For Installation

You may wonder if you can put sub-flooring over concrete. While the application of placing a single layer of LP Legacy sub-flooring directly over concrete is prohibited, there is a preferred method that is code approved. Below is a quick overview of this method.

  1. Install a water vapor barrier directly over the concrete, if using untreated supports, which would need to be mechanically fastened to the concrete. If using treated supports, the vapor barrier can be placed over the supports, which also allows the builder to fasten the supports with a construction adhesive.
  2. Install wood support members, spaced as desired. This is also an opportunity to level the surface in the likely event the concrete has an undesired slope.
  3. Place insulation between the wood structural supports (e.g. 1˝ foam, which typically provides an R-factor of 5).
  4. Apply the LP Legacy sub-flooring using the normal, approved installation method.

As mentioned before, insulation is recommended between supports. How much is based on local building code requirements and can change depending on where you live. It’s always good practice to check with local building authorities. Unless the sub-flooring is going to be exposed to the elements for an extended period of time, we do not recommend waterproofing the basement sub-floors. In such cases, the builder would avoid polyurethane-based products.

If you are looking to create a livable basement that provides year-round comfort, start by installing LP Legacy sub-flooring. It will provide the foundation of a basement that homeowners can enjoy for years to come.

Want to know more about building with LP Legacy Premium Sub-Flooring? Discover all of its benefits here

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Sustainability Solutions

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In our pursuit of sustainable and environmentally friendly products, we completed five LCAs and EPDs for our LP® Structural Solutions portfolio. Along with LP® SmartSide® Trim & Siding, these EPDs demonstrate the carbon negativity of our products. That means that our products store more carbon than is released during their entire life cycle, making us a meaningful part of the climate solution.

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