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Does My Floor Need A Moisture Barrier

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Underlayment is an additional layer placed between the subfloor and the floor covering, offering several benefits when included in a flooring system. These benefits include enhanced thermal insulation, compression resistance, improved sound absorption, and leveling of the subfloor. Many underlayments also provide essential moisture protection.

At Floorlot®, we provide a range of underlayments designed to act as a moisture barrier, helping to preserve the quality and durability of your flooring system.

The Moisture Barrier

A moisture barrier is a protective layer installed between the subfloor and floor covering to shield the floor from moderate moisture in the subfloor.

Exposure to subfloor moisture can damage floor coverings like hardwood, laminate, or vinyl. Moisture may cause these materials to discolor, warp, loosen, soften, or feel spongy. You might also notice planks buckling or rippling due to moisture damage. Additionally, moisture in the subfloor can promote mold and mildew growth.

Moisture presence in the subfloor can significantly impact the appearance, lifespan, and performance of your flooring. Testing the subfloor for moisture before installation is essential. An Anhydrous Calcium Chloride Test can determine moisture levels in the subfloor; ensure that emission rates meet the floor covering manufacturer’s specifications. Always follow the manufacturer’s installation instructions, as warranties may be void if excessive subfloor moisture is present.

Finding the Right Underlayment With a Moisture Barrier

Not all underlayments provide moisture protection; some require an additional layer or film to create an effective moisture barrier. Floorlot® offers a selection of underlayments with built-in moisture protection, suitable for a wide range of hard surface flooring applications. Our high-performance moisture barrier underlayments include:

Floorlot® GoldMax:Our flagship product is a top-tier underlayment designed for both commercial and residential installations of laminate, engineered, and solid hardwood flooring. Floorlot GoldMax is crafted from closed-cell polyethylene foam, a structure that provides exceptional resistance to moisture transfer.

Floorlot® LVT Black: This high-quality underlayment is specifically designed for luxury vinyl tile and plank flooring without a pre-attached pad. Renowned for its superior moisture barrier, it is a popular choice for commercial projects.

Floorlot® BlueStep: This standard grade underlayment & moisture barrier is designed for residential installations of laminate, engineered, and solid hardwood flooring.

When to Install an Underlayment with a Moisture Barrier

Climate
Subfloors in regions with high humidity or frequent precipitation are more likely to retain moisture. Proximity to large bodies of water, such as lakes, oceans, or marshes, can also increase moisture levels, potentially affecting the subfloor and foundation of nearby structures.

Grade
Below-grade spaces like basements are especially prone to moisture due to surrounding soil. Ground-level floors are also more susceptible to moisture than upper levels, making moisture barriers particularly valuable in these areas. When installing flooring below-grade, consider factors like leaking basement pipes, which can further elevate subfloor moisture levels.

Subfloor Material
Concrete, a common subfloor material, is porous and easily absorbs moisture, even in areas with low humidity. To prevent issues like weakening or cracking caused by water vapor, it’s essential to install a moisture barrier over concrete subfloors. Plywood subfloors are also at risk, as moisture can compromise their structural integrity, jeopardizing the entire flooring installation.

Choosing Floorlot® underlayment to safeguard floors from moisture is a smart investment for contractors, builders, and homeowners. Preserve the quality and longevity of your flooring installation with our premium underlayment solutions. Contact us online today to learn more about our products.