GRACE ICE & WATER SHIELD® roofing underlayment

Premium performance underlay, protecting roofs since 1978

For architects and roofing contractors, roofs are a source of everlasting concern. Seventy percent of all construction litigation is related to leaks, and every leak is a lost opportunity, representing a cost to repair and a corresponding loss of customer trust. Severe weather seems to be the new normal, and the risk of damage from ice dams and wind-driven rain are higher than ever. Underlays are the last line of defense in a roofing system, and selection of high quality underlay can be the difference between success and failure.


GRACE ICE & WATER SHIELD® Product Documents

Product Name Product Data Sheet
Product Data Sheet
Product Data Sheet

Technical Letters/Bulletins

Product Name PDF
Chemical Compatibility
Exposure Guidelines
Fastener Sealability
In-Place Performance Temperatures
Insulation and Ventilation to Limit Ice Dam Formation
Rigid Roof Insulation Boards and Grace Underlayments
Roof Eave Application
Slope Requirements
Use as an Air and Vapor Barrier
Use Over Fluted Metal Decks
Use Under Architectural Metal Roofing
Products & Accessories


  • Product Name
  • Description
  • Key Benefits
  • Applications Type

GRACE ICE & WATER SHIELD® has been the premier self-adhesive underlayment product used in domestic roof protection under shingles for more than 30 years. It has performed in the critical areas under the most severe climatic conditions to protect against wind-driven rain and the effects of ice dam build-up beneath the shingles.

Key Benefits
  • Easy to handle and apply
  • Foldless release paper
  • Seals around nails
Application Type
  • Roof decks

Grace Ultra self-adhered roofing underlayment features a unique 100% butyl adhesive formulation. Grace Ultra delivers best in class waterproofing protection and the highest level of thermal stability (300F). Suitable for use in the most extreme conditions, including under copper, Cor-Ten and Zinc roofing.

Key Benefits
  • Easy to handle and apply
  • Self-sealing
  • Heat resistance
Application Type
  • Metal roof
  • Sloped roof
  • Ice dam protection

Aggressive protection since 1978

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 & WATER SHIELD® outperforms the competition, letting contractors shine and keeping families safe and dry.


GRACE ICE & WATER SHIELD® doesn’t just perform well in severe weather, it makes life easier for contractors.

Better for homeowners

GRACE ICE & WATER SHIELD® protects a homeowner's roof from the damaging effects of water intrusion due to wind-driven rain and ice dams because it: 

  • Fully adhered roofing underlay sticks aggressively to deck surface
  • Forms a watertight seal around fasteners used to install shingles and other roof coverings
  • Forms watertight seal at overlaps
  • Protects all standard sloped roofs--slate, tile, wooden shingles or metal, as well as ordinary asphalt shingles

GRACE ICE & WATER SHIELD® is designed to perform for the life of the roof covering.

Better for contractors

The material is also designed to make jobs faster, easier and safer for roofing contractors.

  • Superior waterproofing protection
  • Embossed surface prevents slips and falls
  • Convenient centre-lines, lap-lines and measurement markings
  • Ripcord split release feature makes it easier to apply at vulnerable details

GRACE ICE & WATER SHIELD® lets contractors save time on jobs without compromising on quality or safety.

From residential homes to international monuments

GRACE ICE & WATER SHIELD® isn’t just trusted in single-family homes—it’s been used in marquee projects around the world. Examples include the Pentagon, Spain’s Guggenheim Museum and the Emirates Towers in the UAE. Don’t wait for the next storm.

Contact GCP today to learn how you can use GRACE ICE & WATER SHIELD® on your next roofing project.