GRACE ICE & WATER SHIELD® Roofing Underlayment

Premium performance underlayment, 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. Underlayments are the last line of defense in a roofing system, and selection of high quality underlayments can be the difference between success and failure.

Protecting 2 million roofs in 25 countries.

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.

 

Documents

GRACE ICE & WATER SHIELD® Product Documents

Product Name Product Data Sheet Guide Specifications SDS/MSDS
GRACE ICE & WATER SHIELD®
Product Data Sheet
SDS/MSDS
GRACE ICE & WATER SHIELD® HT
Product Data Sheet
Guide Specifications
GRACE SELECT™
Product Data Sheet
SDS/MSDS
GRACE ULTRA™
Product Data Sheet
Guide Specifications
ROOF DETAIL MEMBRANE
Product Data Sheet
Guide Specifications
SDS/MSDS

Detail Drawings

Product Name DWG PDF
IWS-101 Underlayments — Eave Option 1 (without Drip Edge Stripped in) Detail Drawing
IWS-102 Underlayments — Eave Option 2 (with Drip Edge Stripped in) Detail Drawing
IWS-103 Underlayments — Eave Option 3 (Extended Perimeter for Existing Construction) Detail Drawing
IWS-105 Underlayments — Vertical Front Wall Detail Drawing
IWS-106 Underlayments — Vertical Side Wall Detail Drawing
IWS-107 Underlayments — Skylight Detail Drawing
IWS-108 Underlayments — Chimney Detail Drawing
IWS-109 Underlayments — Outside Corner — Wall to Deck Detail Drawing
IWS-110 Underlayments — Inside Corner — Wall to Deck Detail Drawing
IWS-111 Underlayments — Corner Patch Options Detail Drawing
IWS-112 Underlayments — Use of Ripcord for Detailing Detail Drawing
IWSDET-101 Underlayments — Eave Option 1 (without Drip Edge Stripped in) Detail Drawing
IWSDET-102 Underlayments — Eave Option 2 (with Drip Edge Stripped in) Detail Drawing
IWSDET-103 Underlayments — Eave Option 3 (Extended Perimeter for Existing Construction) Detail Drawing
IWSDET-104 Underlayments — Eave Option 4 (Extended Perimeter for New Construction) Detail Drawing
IWSDET-105 Underlayments — Vertical Front Wall Detail Drawing
IWSDET-106 Underlayments — Vertical Side Wall Detail Drawing
IWSDET-107 Underlayments — Skylight Detail Drawing
IWSDET-108 Underlayments — Chimney Detail Drawing
IWSDET-109 Underlayments — Outside Corner Wall to Deck Detail Drawing
IWSDET-110 Underlayments — Inside Corner Wall to Deck Detail Drawing
IWSDET-111 Underlayments — Corner Patch Options Detail Drawing
IWSDET-112 Underlayments - Use of Ripcord for Detailing Detail Drawing
RDM-101 Detail Membrane — Option 1 (with Drip Edge Stripped in) Detail Drawing
RDM-102 Detail Membrane — Vertical Front Wall Detail Drawing
RDM-103 Detail Membrane — Vertical Side Wall Detail Drawing
RDM-104 Detail Membrane — Skylight Detail Drawing
RDM-105 Detail Membrane — Chimney Detail Drawing
RDM-106 Detail Membrane — Outside Corner — Wall to Deck Detail Drawing
RDM-107 Detail Membrane — Inside Corner — Wall to Deck Detail Drawing
RDMDET-101 Detail Membrane Option 1 (with Drip Edge Stripped in) Detail Drawing
RDMDET-103 Detail Membrane Vertical Side Wall Detail Drawing
RDMDET-104 Detail Membrane Skylight Detail Drawing
RDMDET-105 Detail Membrane Chimney Detail Drawing
RDMDET-106 Detail Membrane Outside Corner Wall to Deck Detail Drawing
RDMDET-107 Detail Membrane Inside Corner Wall to Deck Detail Drawing
Products & Accessories

Products

  • Product Name
  • Description
  • Key Benefits
  • Applications Type
GRACE ICE & WATER SHIELD®
Description

GRACE ICE & WATER SHIELD® self-adhered roofing underlayment is a premier membrane composed of two waterproofing materials—an aggressive rubberized asphalt adhesive backed by a layer of slip resistant coated high density cross laminated polyethylene film.

Key Benefits
  • Thermal resistance to 260F
  • 120 day UV exposure
  • High quality seal around fasteners
  • Superior adhesion
  • Easily forms watertight laps
Application Type

Sloped roofs and under mechanically attached roof coverings such as asphalt shingles, slate, tile, cedar, and standing seam metal in many climate and assembly conditions

GRACE ICE & WATER SHIELD® HT
Description

GRACE ICE & WATER SHIELD® HT self-adhered underlayment is specifically designed to meet the challenges inherent in metal roof assemblies. It delivers all the advantages of GRACE ICE & WATER SHIELD® with thermal stability to 260F and 120 day exposure

Key Benefits
  • Thermal Resistance to 260F
  • 120 day UV exposure
  • High Quality Seal around fasteners
  • Superior Adhesion
  • Easily forms Watertight Laps
Application Type
  • Metal, Tile, Shingle Roofing
  • Sloped Roofing
  • Eave/Valley Protection
  • Desert and Alpine Climates
  • Heavily Insulated roof decks
GRACE SELECT™
Description

GRACE SELECT™ self-adhered roofing underlayment is the performance alternative to granular surfaced underlayments. It meets industry and code based standards of performance for fastener sealability and provides fast and easy installation.

Key Benefits
  • Lighter Weight
  • Superior Lap Adhesion than Granulars
  • Re-roofable, Shingles do not bond to surface
  • Clean film surface
  • Wont track adhesive/oil
  • Higher Adhesive Content and no inert fillers
Application Type
  • Shingles and Metal Roofing
  • Sloped Roofing
  • Eave/Valley Protection
  • Chimneys, Skylights, and other details
GRACE ULTRA™
Description

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
  • Butyl Adhesive
  • Thermal Resistanct to 300F
  • Compatible with TPO and EPDM Roofing Membranes
  • Seals around fasteners
Application Type
  • Copper, COR-TEN, and Zinc metal roofing
  • Steep/Low Slope transitions
  • Waterproofing Parapets
  • Eave/Valley Protection
  • Desert and Alpine Climates
  • Heavily Insulated roof decks
ROOF DETAIL MEMBRANE
Description

ROOF DETAIL MEMBRANE is a premier membrane based on the GRACE ICE & WATER SHIELD® roofing underlayment technology. The new membrane has the RIPCORD® split-release on demand feature placed in the center and near the edge (18 in. width) for easy installation at the transition areas as well as allowing for future tie-ins.

Key Benefits
  • Easy to handle and apply
  • Seals around nails
  • Membrane will not crack, dry out or rot
  • Protects under all standard sloped roof coverings
  • Slip resistant surface
  • Proven track record
  • Reroofable
  • Inhibits corrosion
  • Multiple RIPCORD® locations for easier detailing
Application Type

Rooftop details such as:

  • Valleys
  • Skylights
  • Chimneys
  • Roof to Wall Transitions
Overview

Roof it Right™

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 underlayment 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, shakes 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 improves slip resistance

  • Convenient center-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 job sites 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 the world over. 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.

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