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.
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® Product Documents
| Product Name | Product Data Sheet | SDS/MSDS | Guide Specifications |
| GRACE ICE & WATER SHIELD® | |||
| GRACE ICE & WATER SHIELD® HT | |||
| GRACE SELECT™ | |||
| GRACE ULTRA™ | |||
| Roof Detail Membrane |
Detail Drawings
| Product Name | |
| 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-102 Detail Membrane Vertical Front Wall 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 |
Technical Letters
| Product Name | |
| Chemical Compatibility | |
| Exposure Guidelines | |
| 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 on Oriented Strand Board (OSB) Roof Sheathing | |
| Use Over Fluted Metal Decks | |
| Use Over Georgia-Pacific DENSDECK® and DENSDECK® Prime | |
| Use Under Architectural Metal Roofing |
Products
- Product Name
- Description
- Key Benefits
- Applications Type
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.
- Thermal resistance to 260F
- 120 day UV exposure
- High quality seal around fasteners
- Superior adhesion
- Easily forms watertight laps
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 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
- Thermal Resistance to 260F
- 120 day UV exposure
- High Quality Seal around fasteners
- Superior Adhesion
- Easily forms Watertight Laps
- Metal, Tile, Shingle Roofing
- Sloped Roofing
- Eave/Valley Protection
- Desert and Alpine Climates
- Heavily Insulated roof decks
GRACE SELECTTM 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.
- 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
- Shingles and Metal Roofing
- Sloped Roofing
- Eave/Valley Protection
- Chimneys, Skylights, and other details
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.
- Butyl Adhesive
- Thermal Resistanct to 300F
- Compatible with TPO and EPDM Roofing Membranes
- Seals around fasteners
- 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 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.
- 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
- Valleys
- Skylights
- Chimneys
- Roof to Wall Transitions
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:
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Fully adhered roofing underlayment sticks aggressively to deck surface
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Forms a watertight seal around fasteners used to install shingles and other roof coverings
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Forms watertight seal at overlaps
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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.
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Superior waterproofing protection
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Embossed surface improves slip resistance
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Convenient center-lines, lap-lines, and measurement markings
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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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