When it comes to waterproofing, Barrett is a name you can count on.

For over 90 years, Barrett Roofs has been manufacturing waterproofing products and systems that guarantee watertightness in projects all over the world. Through our decades of experience, we have developed a variety of materials all of your waterproofing applications.


We offer a variety of waterproofing systems, including hot and cold liquid applied, self-adhering membranes, deck coatings, and more. These systems are engineered to work on horizontal and vertical applications for above- and below-grade projects. When it comes to moisture protection, Barrett is your permanent solution.

  • Waterproofing

    Waterproofing is the combination of materials or systems that prevents water intrusion into structural elements of a building or its finished spaces. Waterproofing membranes consist of waterproof plastic, rubber, or coated-fabric materials. These materials, when properly installed, are used in a system to prevent the ingress of water into foundations, roofs, walls, basements, buildings, and structures.

  • Above-Grade Vs. Below-Grade

    Most above-grade materials are breathable in that they allow for negative vapor transmission. This is similar to human skin; it is waterproof, allowing you to swim and bathe but also to perspire, which is negative moisture transmission. Most below-grade materials will not allow negative transmission and, if present, can cause the material to blister or become unbonded. Below-grade products are neither ultraviolet-resistant nor capable of withstanding thermal movement experienced in above grade structures, Whereas below-grade materials are not subject to wear, above-grade materials can be exposed to wear such as foot traffic. Below-grade products withstand hydrostatic pressure, whereas above-grade materials do not. 

Below-Grade Systems Above-Grade Systems
Hydrostatic Pressure ResistantUltraviolet Resistant
Structural Movement CapabilityThermal & Structural Movement Capability
Most Inaccessible After InstallationBreathable
Both Positive & Negative ApplicationsTraffic Wear & Weathering Exposure
Mostly Barrier SystemsAesthetically Pleasing
Drainage Enhancement a MustFreeze-Thaw Cycle Resistant
  • Applications

  • Tunnels

  • Plaza Decks

  • Below-Grade

  • Bridge Decks

  • Green Roofs

  • Split-Slab

  • Parking Decks

  • Mud-Slab

  • Blind-Side

  • Balconies & Terraces

  • Systems

  • Trust.

    Barrett has over 40 years of rubberized asphalt waterproofing experience on many of our nation's monumental structures, computer data centers, museums, and mission-critical structures, proving on-going performance with zero failures. Experienced in system development, manufacture, and application, our expertise is born from 5 generations and 90+ years of roofing and waterproofing success.

  • Our Promise to You.

    With a national network of trained Approved Contractors, over a thousand distributors, and complete design and specification assistance available from our technical staff, Barrett can make your life easier while keeping your project on schedule and watertight for decades to come. 


Barrett roofing and waterproofing warrantied applications must be installed by Barrett Approved Contractors. Each fully approved contractor is experienced, financially stable, and carefully selected at the time of approval. We are proud to have over 300 fully equipped Barrett Approved Contractors across the US.


Over $50 million has been invested in the technology, research, and development of our various product lines. Each polymer-modified bitumen production run is individually certified to be in conformance with specifications prior to shipping. Barrett's expert technical staff is available to work with designers and specifiers during project development and construction to assure proper design and installation. Many of our systems are UL® and FM® Approved.


The Barrett Company offers long-term warranties of up to 30 years for labor and materials. Terms vary depending on the product and application. If you are interested in discussing the terms of a warranty for a roofing or waterproofing application, please reach out to our technical staff or email us at info@barrettroofs.com


Barrett makes the environment a priority in the engineering, manufacturing, and recycling of its roofing products. Our RAM-Tough 250 system is made using recycled tires & plastics, and the asphalt/polyester reinforcing membrane can be recycled into high-quality asphalt concrete highway mix. Energy Star® Certified roof surfaces are offered for most systems, which can contribute to LEED® credits. Greenroof-Roofscapes® offer many environmental contributions well beyond any other roof type.