10 Best Waterproofing Membranes 2026 in the United States

The Firestone Rubbergard 60-Mil EPDM membrane is a popular choice for waterproofing low-slope roofs or decks, measuring 15 by 100 feet and made from durable rubber. Its 60-mil thickness offers strong protection against wear and tear, making it long-lasting and cost-effective over time. The material is flexible, which helps it easily conform to unusual roof shapes—great if your surface isn’t perfectly flat or if you’re handling the installation yourself.

This flexibility also makes it easier to install without needing special tools or professional help. The membrane provides excellent resistance to UV rays and many chemicals, which helps prevent damage from sun exposure and common substances it may encounter outdoors. However, you should order a liner slightly larger than your roof or deck dimensions, because an exact fit won’t allow for proper coverage and sealing.

The product is heavy (about 600 pounds) and ships via freight truck, so handling might require some planning. Widely praised for durability and ease of use, this membrane is ideal if you want a reliable, versatile waterproofing solution for residential or light commercial roofs, especially if you prefer a DIY approach or want to avoid frequent maintenance.

The LATICRETE 9235 Waterproofing Membrane Full Unit is designed for those looking to waterproof surfaces efficiently. Made from rubber, it ensures a high level of water resistance, making it ideal for use with materials like stone and tile. The product is liquid in form, which suggests it can be applied easily, even in challenging areas.

With a compact style and a decent package size of 6 gallons, it is suitable for both small and large projects. The membrane has UV resistance and chemical resistance attributes, ensuring that it remains durable and effective even when exposed to harsh conditions. Flexibility is a critical factor for waterproofing membranes, and the rubber material used likely contributes to its ability to flex without cracking.

Weighing 78.8 pounds, it is relatively heavy, so handling might require some effort. This product is particularly useful for those working on flooring and tiling projects, where durable waterproofing is essential. Consideration of the application method and potential handling challenges should be taken into account when planning a project with this membrane.

The Firestone RubberGard 45-Mil EPDM Roofing Rubber is a popular choice for waterproofing low-slope roofs and decks, offering a durable and flexible solution. Made from 45-mil thick EPDM rubber, this membrane provides excellent protection against water while being tough enough to handle various weather conditions. Its thickness is enough to ensure good durability without being too bulky, which helps with installation.

The material is known for its flexibility, making it ideal for covering unusual roof shapes and easier for both DIY homeowners and contractors to work with. It also stands up well to UV exposure and many chemicals, which helps the roof last longer without degrading. One important note is that the product comes in a fixed 10 by 40-foot size, so you should order a slightly larger piece than your exact roof or deck measurements to ensure full coverage without gaps.

While it’s highly effective for roofing, it might be heavier and less convenient if you need to handle it alone due to its weight. This membrane offers good value through its strong durability, ease of use, and versatility, making it a solid choice for anyone looking to waterproof a roof or deck with a long-lasting, flexible material.