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Grace Ice & Water shield underlayment on house roofs

Grace VYCOR™ Ice & Water Shield®

Protecting Homes and Reputations with Roofing Underlayments for 40+ Years

Since 1978, self-adhering GRACE VYCOR™ ICE & WATER SHIELD® roofing underlayment has been contractors' trusted solution to protect homes and buildings from wind-driven rain and ice dams.
Contractor installs shingles over Grace Vycor Ice and Water Shield HT underlayment.

The most severe weather is no match for our 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 requirements.

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.
Carousel Title: Residential Roof Protection

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 VYCOR™ ICE & WATER SHIELD® is the original self-adhered underlayment that delivers superior waterproofing performance and has been installed on more than two million homes, including many in the most severe climates.


  • GRACE VYCOR™ 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 VYCOR™ SELECT™ is a code-compliant performance alternative to granular underlayments. Its lower thickness makes it lighter and easier to apply than heavy granular surfaced materials.


  • GRACE VYCOR™ 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.