The Roofing Book

Materials / Ice and Water Barrier

Ice and Water Barrier

accessory

A self-adhering, polymer-modified bituminous sheet installed at roof eaves, valleys, and other vulnerable areas to stop water intrusion from ice-dam backup on steep-slope roofs. The membrane's rubberized asphalt underside bonds directly to the deck and seals around fastener penetrations, giving continuous protection that ordinary felt underlayment cannot. IRC Section R905.1.2 permits it as an alternative to two cemented layers of underlayment in areas with a history of ice damming, requiring that the sheet comply with ASTM D1970. It is used under asphalt shingles, wood shakes, slate, and metal roof shingles on steep-slope assemblies.

Category family
accessory
Slope suitability
steep
Pros
  • seals around nail penetrations for continuous waterproofing
  • stops ice-dam backup at eaves and valleys where leaks concentrate
  • satisfies IRC R905.1.2 as an alternative to double-layer cemented underlayment
  • bonds directly to the deck for wind and wind-driven-rain resistance
Cons
  • adds material cost compared to standard felt underlayment
  • can be difficult to reposition once adhered to the deck
  • some formulations require minimum application temperatures

Manufacturers

Northern Elastomeric Incorporated AEP Span Gardner-Gibson ATAS International Fabral Atlas Roofing Corporation BITEC CertainTeed Polyguard Products Dimensional Metals, Inc. EcoStar Elevate Englert Epilay PrimeSource Building Products, Inc. Henry Company MFM Building Products Corp. IKO MBTechnology Protecto Wrap Company SOPREMA Tarco Malarkey Roofing Products Drexel Metals Metal Sales Manufacturing Corporation Owens Corning Intertape Polymer Group Petersen Aluminum Polyglass USA The Garland Company Alpha Pro Tech National Nail Corp. Kirsch Building Products GAF TAMKO Building Products Tremco Roofing DuPont U.S. Ply, Inc. VB Synthetics VaproShield Westlake Royal Roofing Solutions

Named products

AC Granular Ice and StormSealNorthern Elastomeric Incorporated AEP Span Underlayment HTAEP Span APOC Weather Armor FT3 Fleece-Top Roof UnderlaymentGardner-Gibson APOC Weather Armor HT High Temperature Roof Underlayment (HT2 / HT3)Gardner-Gibson APOC Weather Armor SB-1 Self-Bond Roof UnderlaymentGardner-Gibson ATA-Shield Self-Adhering UnderlaymentATAS International All Purpose High-Temperature UnderlaymentFabral Atlas WeatherMaster HP-Flex Ice & Water UnderlaymentAtlas Roofing Corporation Atlas WeatherMaster HP-GranularAtlas Roofing Corporation Atlas WeatherMaster Ice & Water 200Atlas Roofing Corporation Atlas WeatherMaster Tile UnderlaymentAtlas Roofing Corporation BITEC MAT-40BITEC CertainTeed Vycor Ice & Water Shield HTCertainTeed CertainTeed Vycor SelectCertainTeed CertainTeed Vycor UltraCertainTeed CertainTeed WinterGuard HT XCertainTeed CertainTeed WinterGuard Sand, Granular and Sand XCertainTeed Deckguard HTPolyguard Products DynaClad Ultra HT Wind & Water SealDimensional Metals, Inc. EcoStar Glacier Guard 300EcoStar Elevate CLAD-GARD RElevate Elevate CLAD-GARD SAElevate Englert MetalMan HT UnderlaymentEnglert Epistik I&WEpilay Epistik PlusEpilay Epistik SA-250Epilay Gardner Gard-Lock Roof UnderlaymentGardner-Gibson Grip-Rite Eave & Valley ProtectorPrimeSource Building Products, Inc. Grip-Rite ShingleLayment-HTPrimeSource Building Products, Inc. Henry Blueskin PE200HT High-Temperature Roof UnderlaymentHenry Company Henry Blueskin RF200 Self-Adhered Roof UnderlaymentHenry Company Henry Blueskin RF200LT Low Temperature Roof UnderlaymentHenry Company Henry Blueskin RF200TM Self-Adhered Tile and Metal UnderlaymentHenry Company Henry Eaveguard Self-Adhered Roof UnderlaymentHenry Company Henry WIP 100 Granular-Surface Self-Adhering Roofing UnderlaymentHenry Company Henry WIP 250HT High-Temperature Self-Adhering Roofing UnderlaymentHenry Company Henry WIP 300HT High-Temperature Self-Adhering Roofing UnderlaymentHenry Company IB-3 IceBusterMFM Building Products Corp. IB-3 ShingleStarterMFM Building Products Corp. IB-3 StormStopperMFM Building Products Corp. IB-3 StormStopper PlusMFM Building Products Corp. IB-4 StormStopperMFM Building Products Corp. IKO GoldShield Premium Ice & Water ProtectorIKO IKO StormShield Ice & Water ProtectorIKO Ice & Moisture Block SBSMBTechnology Jiffy Seal BUTYL Ice & Water Guard HTProtecto Wrap Company Jiffy Seal Ice & Water GuardProtecto Wrap Company Jiffy Seal Ice & Water Guard ExtremeProtecto Wrap Company Jiffy Seal Ice & Water Guard HTProtecto Wrap Company Jiffy Seal Ice & Water Guard HT 25Protecto Wrap Company LASTOBOND PRO TU HTSOPREMA LASTOBOND REINFORCED HTSOPREMA LASTOBOND SHIELD HTSOPREMA LeakBarrier 25RATarco LeakBarrier ButylTarco LeakBarrier EasyLay UDL HTTarco LeakBarrier FS500 HTTarco LeakBarrier MS300 Ice and Water ArmorTarco LeakBarrier NR600 Ultra Ice and Water ArmorTarco MFM Wind & Water SealMFM Building Products Corp. Malarkey 401 Arctic SealMalarkey Roofing Products Malarkey 406 Secure Start HTMalarkey Roofing Products MetShield High-Temp UnderlaymentDrexel Metals Metal Sales ms-HT Hi-Temp UnderlaymentMetal Sales Manufacturing Corporation Owens Corning RhinoRoof Granulated Self-Adhered UnderlaymentOwens Corning Owens Corning RhinoRoof High-Temp Self-Adhered UnderlaymentOwens Corning Owens Corning Titanium FR High-Temp & Fire-Resistant Self-Adhered UnderlaymentOwens Corning Owens Corning Titanium PSU30 High-Temp Self-Adhered UnderlaymentOwens Corning Owens Corning WeatherLock Flex Self-Sealing Ice & Water BarrierOwens Corning Owens Corning WeatherLock G Granulated Self-Sealing Ice & Water BarrierOwens Corning Owens Corning WeatherLock Mat Self-Sealing Ice & Water BarrierOwens Corning Owens Corning WeatherLock Specialty Tile & Metal Waterproofing BarrierOwens Corning Palisade Butyl-HTIntertape Polymer Group Palisade Butyl-HT PlusIntertape Polymer Group Palisade SA-HTIntertape Polymer Group Petersen PAC-CLAD HTPetersen Aluminum Polyglass Polystick IR-XePolyglass USA Polyglass Polystick MTS PlusPolyglass USA Polyglass Polystick MXPolyglass USA Polyglass Polystick P HTPolyglass USA Polyglass Polystick PX HTPolyglass USA Polyglass Polystick TU MAXPolyglass USA Polyglass Polystick TU PPolyglass USA Polyglass Polystick TU PlusPolyglass USA Polyglass Polystick XFRPolyglass USA Premium HT Tile & MetalMFM Building Products Corp. R-Mer SealThe Garland Company REX Hi-TempAlpha Pro Tech Rainproof-40 High Performance Roof UnderlaymentProtecto Wrap Company Rainproof-60 High Performance Roof UnderlaymentProtecto Wrap Company SOPREMA SELECT LASTOBOND REINFORCED HT FRSOPREMA SOPREMA SELECT SBS GLASS STICKSOPREMA STINGER EXOSTK-NW 40MIL Peel & Stick UnderlaymentNational Nail Corp. Sharkskin Ultra SAKirsch Building Products StormGuard Film-Surfaced Leak BarrierGAF StormStopper FSUMFM Building Products Corp. TAMKO Moisture Guard Ice & Rain UnderlaymentTAMKO Building Products TAMKO TW Metal and Tile UnderlaymentTAMKO Building Products TAMKO TW UnderlaymentTAMKO Building Products TECHNOplus+ Ice & WaterAlpha Pro Tech Terra SealThe Garland Company Tremco SA UnderlaymentTremco Roofing Tyvek Protec PSUDuPont USP 180 HT-NS UnderlaymentU.S. Ply, Inc. Ultra HT Wind & Water SealMFM Building Products Corp. VB Extreme SAVB Synthetics VaproShield RoofBlock HTVaproShield Vycor Ice & Water ShieldCertainTeed WeatherWatch Mineral-Surfaced Leak BarrierGAF Westlake Royal Citadel ProWestlake Royal Roofing Solutions Westlake Royal MetalSeal HTWestlake Royal Roofing Solutions Westlake Royal TileSeal HTWestlake Royal Roofing Solutions

Where code requires this

Ice & water shield requirements by jurisdictionPermitting facet

Related guides

Ice Barrier Code Map Ventilation & Ice Dams Asphalt vs. Metal vs. Tile Wind & Fire Ratings New Roof Cost

Sources