7 Best Underlayment For Carpets 2025 in the United States

The ROBERTS Black Jack Underlayment is designed for use under laminate and engineered wood flooring, but it can also serve well under carpets. It comes in a substantial 600 sq. ft. roll, which is economical compared to buying smaller rolls. With a thickness of 2.5 mm, it offers adequate cushioning and a reduction in sound transference, which are essential for comfort and noise management in carpeted areas. The product's high IIC and STC ratings (70 and 66 respectively) indicate strong performance in soundproofing, making it a good choice for those looking to minimize noise from impacts and general sound transmission through floors.

Its easy installation feature, with plastic overlap and adhesive strip, adds convenience for both DIY users and professional installers. While it is touted as ideal for use over radiant heated floors, potential users should ensure compatibility with their specific heating systems. The underlayment also provides insulation benefits. Although the product does not explicitly mention a moisture barrier, its material and design might offer some resistance.

The 3in1 Vapor Barrier Flooring Underlayment by Bestlaminate is designed for those seeking an effective underlayment for their carpets, particularly if they have wood or cement subfloors. It boasts a 2mm thickness, which provides a decent cushion for most flooring types, enhancing comfort underfoot. The foam material, while lightweight at 11 pounds, offers good density for support and durability.

One of the standout features is its built-in vapor barrier with an overlap and self-sealing tape strip, which helps prevent moisture from seeping through and potentially damaging the flooring above. This makes it particularly useful in areas prone to moisture, such as basements or ground floors. Additionally, the product is environmentally friendly, shipped in recyclable bags, which is a plus for eco-conscious consumers.

The underlayment also has soundproofing and insulation properties, contributing to a quieter and more energy-efficient home environment. At a thickness of only 2mm, it may not provide as much cushioning or insulation as thicker options available in the market. Furthermore, while it is suitable for wood and cement subfloors, it may not be ideal for other types of flooring that require different underlayment characteristics.

The ROBERTS Super Felt Underlayment is designed for use with engineered wood and laminate flooring, making it a versatile option for various types of flooring installations. It features a thickness of 3 millimeters, which provides a moderate level of cushioning that is suitable for correcting minor sub-floor imperfections. The material is heat-treated, recycled fibers, making it an eco-friendly choice.

This underlayment is green in appearance and comes in a roll format, covering a substantial area of 360 square feet, which is beneficial for larger projects. The top film layer provides protection from harmful moisture vapor, ensuring durability and stability over concrete and wood subfloors. Additionally, it offers some level of soundproofing and insulation, although these features are not heavily emphasized in the product description.

It is important to note that it might not be the best choice for those seeking maximum soundproofing or insulation, as the primary focus appears to be on moisture protection and cushioning. The roll format and substantial weight of 45.5 pounds may require extra effort during installation. Nonetheless, this underlayment could be an excellent choice for users looking for a green, durable, and moderately cushioned option for their flooring needs.