glueddown

Gluedown refers to a flooring installation method in which a floor covering is permanently bonded to the subfloor using an adhesive, rather than being floated or mechanically fastened. The term covers a range of materials that can be installed this way, including vinyl sheet and vinyl plank (LVT), some engineered wood products, ceramic and porcelain tile, and carpet.

The installation process typically begins with substrate preparation to create a clean, flat surface and may involve moisture testing, especially on concrete. A suitable adhesive is selected based on the material and substrate, then applied with a trowel, roller, or other tool. The flooring is laid in place and rolled to ensure full adhesive contact and trimmed at edges. Substrates can include concrete, plywood, or OSB, with concrete floors often requiring a moisture barrier and primer.

Adhesives used vary by product: vinyl often uses acrylic or polyurethane adhesives; carpet commonly uses carpet glue or pressure-sensitive adhesives; ceramic tile requires thinset mortar. Each material has specific manufacturer recommendations that influence compatibility and performance.

Advantages of the gluedown method include strong bond, dimensional stability, sound and impact reduction, and a lower tolerance for substrate movement compared with floating installations. Disadvantages include more challenging removal and replacement, potential moisture sensitivity for certain products, and a higher degree of accuracy and preparation required during installation.

Carpet glue-down is common in commercial settings and some residential applications, while vinyl and tile installations are prevalent in both commercial and residential spaces. Proper substrate preparation, adhesive selection, and adherence to manufacturer guidelines are essential to long-term performance.

See also: floating floor, nail-down, click-lock, moisture testing, subfloor preparation.