The most severe weather is no match for the waterproofing integrity of GCP's self-adhered underlayments

Roofing contractors and builders stake their reputations on quality workmanship. That's why they trust our roofing underlayments to protect homes in the most extreme climates around the world. And architects choose our products because they meet the most demanding design specs.

All of our self-adhering underlayments outperform other brands because they:

  • Seal aggressively to roof decks to create a watertight bond and prevent water migration
  • Seal tightly around roof fasteners to prevent leaks

  • Seal to form watertight bonds at vulnerable overlaps for superior water-shedding

Additionally, Ripcord® Split Release On-Demand technology makes it easier to protect vulnerable details like chimneys, valleys and roof-to-wall transitions.

We sweat the details to make roofing faster, easier and more profitable for contractors and owners

We advanced roofing technology in 1978 by introducing the first self-adhering roofing underlayment product. Our R&D team innovates continuously to improve installation efficiency and ensure our products are the most durable and resilient.

  • Grace Ice & Water Shield® is the original self-adhered underlayment that delivers superior waterproofing performance and has been installed on more than 2 million homes, including many in the most severe climates.
  • Grace Ultra™ is a unique self-adhered underlayment formulated with a butyl adhesive that delivers unmatched thermal stability. It is suitable for use under copper, Cor-Ten® steel, and zinc roof coverings.
  • Grace Ice & Water Shield® HT is a version of the flagship product that is formulated to be more thermally stable and ideal for use under metal roofing, or in high temperature roofing assemblies.
  • Grace Select® is a code compliant performance alternative to granular underlayments. It’s lower thickness makes it lighter weight and easier to apply than heavy granular surfaced materials.

Contractors and architects also enjoy the benefits of the Blue 360sm Field Advantage Program

The Blue 360sm Field Advantage Program includes consultations with our field sales and technical service teams, who help architects and contractors select the optimal underlayments to meet their specs. Our team also recommends compatible weatherproofing products from our extensive portfolio, such as weather and air barriers, flashing and below grade waterproofing.

Our wide range of training seminars and materials includes:

  • Classes taught in conjunction with the American Institute of Architects (AIA)

  • Videos on product selection and installation

  • Contractors' handbooks, interactive product guides, detail drawings and data sheets

Blue 360sm Field Advantage: Our team is your team.

Grace Ice & Water Shield®

Grace Ice & Water Shield® has protected the roofs of over 2 million homes, and been installed on marquee projects in 25 countries, since its introduction in 1978. This high performance solution provides superior performance at an excellent value. Grace Ice and Water Shield® outperforms the competition, letting contractors shine and keeping families safe and dry.

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Grace Ice & Water Shield® HT

Grace Ice & Water Shield® HT high temperature self-adhered roofing underlayment is a premier membrane designed to deliver premium in-place performance for high temperature applications. It is composed of two waterproofing materials—an innovative and proprietary rubberized asphalt adhesive combined with a high performance polymeric film with UV barrier properties.

Grace Ultra™ - Self-adhered underlayment for high temperature

Grace Ultra™ roofing underlayment is composed of two waterproofing materials — an aggressive butyl rubber-based adhesive backed by a layer of high density, cross-laminated polyethylene. The product is 0.76mm thick making it easy to handle and apply. The unique, advanced adhesive formulation offers premium adhesion to the roof deck, high quality laps, superior seal around roofing fasteners, and outstanding high temperature stability.

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Grace Select® - The performance alternative to granular surfaced underlayments

Grace Select™ roofing underlayment is composed of two waterproofing materials—a rubberized asphalt adhesive, backed by a layer of high density cross laminated polyethylene film. The product is 25 mils (0.64 mm) thick making it lightweight and easy to handle and apply. The unique, advanced rubberized asphalt formulation allows the membrane to meet industry standards for fastener sealability equivalent to products that are often significantly thicker and heavier.

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