10 Best Underlayment For Ceramic Tiles 2025 in the United States

The Schluter Kerdi 108 Sq Ft Waterproofing Membrane is designed specifically for waterproofing underlayment in shower installations, making it highly suitable for spaces where moisture resistance is crucial. Made from polyethylene, the material is known for its excellent waterproofing properties. With a thickness of 8 millimeters, this membrane provides a solid barrier against moisture while remaining relatively easy to handle at a weight of 6.6 pounds for the entire roll.

The product dimensions make it compact and easy to store until needed. One of its standout features is the ability to form a perfect bond with thin-set mortar, simplifying the installation process for users. However, the product's main focus on waterproofing means it may not offer significant sound insulation benefits, which could be a consideration depending on the specific needs of your installation.

The membrane has received high customer ratings, with a 4.7 out of 5 stars from 770 reviews, suggesting general satisfaction among users. While the installation method via thin-set mortar is straightforward for experienced installers, beginners might find it slightly challenging without prior experience. In summary, the Schluter Kerdi waterproofing membrane excels in providing a reliable and effective moisture barrier for ceramic tile installations, especially in wet areas like showers, though it might not offer much in terms of soundproofing.

The Houseables Uncoupling Membrane is a solid choice for anyone looking to protect their ceramic tile installation. One of its key strengths is its moisture resistance, which helps prevent water damage to both the tiles and the substrate below. The membrane's primary function is to act as a crack prevention barrier, effectively absorbing the substrate's expansion and contraction due to temperature changes. This feature makes it especially useful for areas where movement may be a concern, ensuring your tiles remain intact over time.

Installation is straightforward, which is great for both DIY homeowners and professionals. Simply lay down thin-set, place the membrane, and proceed with tiling on top. This ease of use reduces installation time without significantly increasing the floor height, which is a definite plus for maintaining a consistent floor level.

The membrane is relatively lightweight and covers a substantial area (323 sq ft), making it suitable for larger projects. However, it may not be the top choice for very high-end installations that require specialized underlayment. The Houseables Uncoupling Membrane is a reliable option for protecting ceramic tile floors, especially for homeowners looking for an easy-to-install solution that offers solid moisture resistance and crack prevention.

The Superseal Tile Uncoupling Membrane is a solid choice for anyone looking to install ceramic or stone tiles, particularly in moisture-prone areas like bathrooms and kitchens. One of its key strengths is its ability to prevent cracks and delamination, which can be crucial for the longevity of your flooring. It meets the ANSI A11812 Crack Isolation standards, giving users confidence in its protective capabilities. The membrane is also waterproof and effectively manages vapor, which is essential for safeguarding the substrate beneath the tiles.

In terms of installation, it is relatively easy to work with, and its 1/8'' thickness allows for smooth transitions between different flooring types, like tile and hardwood. This versatility makes it suitable for various settings, from residential homes to commercial spaces like restaurants and malls.

There are a couple of drawbacks to keep in mind. While the membrane is highly effective, it may not be the most budget-friendly option on the market, which could be a consideration for DIY homeowners looking to save costs. Additionally, while it can be used widely, its performance may vary depending on specific subfloor conditions, so it's important to ensure compatibility before use. This membrane serves as a reliable and effective solution for those looking to install ceramic tiles, especially in areas subject to moisture and heavy foot traffic.