1/4" BACkeRBOARD COMPARISON ChART - James Hardie

Cement Board with MoldBlock ® Protection1/4" Backerboard Comparison ChartCement Board with MoldBlock ® ProtectionDurock ® Boardand Durock ® NextGenerationWonderBoard ®PermaBase ® andPermabase Ultrabacker DensShield ® BoardFiberock ®Aqua-Tough UnderlaymentPRODUCT COMPOSITIONPortland cement,ground sandPortland cement,aggregate,glass-fiber meshPortland cement,aggregate,glass-fiber meshPortland cement,aggregate,glass-fiber meshGypsum, fiberglass mat w/acrylic coatingEngineered gypsumfiber coreFlexural strength (psi) 2100 1250 1500 1250 Not Indicated Not IndicatedCompressive strength (psi) 7000 2300 2500 2250 1500 1250Gypsum-free ü ü ü ü û ûFree of glass fibers ü û û û û üCuts cleanly & easily ü û û û ü üNon-abrasive ü û û û ü ü“Ez Grid ® ” board recessedfastener pattern* ü û û û û ûWarrantyLifetime limited;transferable (materialand labor)30-year limited;transferableLifetime limited;non-transferable30-year limited;non-transferableLifetime limited;non-transferableWeight (lbs./ft 2 ) 1.9 2 2 2 1.2 1.5Warranted for use with vinyl tileapplications ü û û û û üProduct characteristicsBest selling brand of backerboard.Lightest cement board available.Delivers more compressive andflexural strength than any otherbackerboard on the market.Exclusive MoldBlock ® Protectionresists moisture and mold.HardieBacker EZ Grid ® board offers apatented recessed fastener pattern foreven easier installation; exceptionaltile bond strength.Contains abrasive aggregate thatcan scratch porcelain and enamelsurfaces. Product must be scored onboth sides and glass mesh must becut after snapping.Data on ASTM tests for mold growthnot available. Contains abrasiveaggregate that can scratch porcelainand enamel surfaces. Product mustbe scored on both sides and glassmesh must be cut after snapping.Contains abrasive aggregate thatcan scratch porcelain and enamelsurfaces. Product must be scored onboth sides and glass mesh must becut after snapping.Manufacturer instructions state“Do not use DensShield in floor tileinstallation when using tile with lessthan 2" x 2" dimensions” (DensShieldarchitectural specs, www.gp.com).20-year limited;transferableProduct contains over 80% gypsumwhich can disintegrate in wet areas.According to installation instructions,panels must “acclimate totemperature and humidity at job siteprior to installation” and panels mustbe handled “in an upright positionto prevent breakage.” Additionalwarranty information: not warrantedfor tile greater than 14”x14” or lessthan 6”x6”.*HardieBacker 1/4" board in 3' x 5' sizewww.hardiebacker.com1-866-4-HARDIE© 2011 James Hardie Technology Limited. All rights reserved. TM, SM, and ® denote trademarks or registered trademarks of James Hardie Technology Limited. is a registered trademark of James Hardie Technology Limited.Durock is a registered trademark of USG Corporation or its subsidiaries. DensShield is a registered trademark of Georgia Pacific Corporation. WonderBoard is a registered trademark of Custom Building Products. PermaBase is registered trademark of National Gypsum Company.Fiberock is a registered trademark of USG Corporation and/or its subsidiaries.HB1123 10/11

HardieBacker ® ProGrid Cement Board with MoldBlock ® Protection1/2” Backerboard Comparison ChartHardieBacker ® ProGrid Cement Board with MoldBlock ® ProtectionDurock ® Boardand Durock ® NextGenerationWonderBoard ® PermaBase ® DensShield ® BoardFiberock ®Aqua-Tough InteriorPanel & BackerboardGreenboardPRODUCT COMPOSITIONPortland cement,ground sandPortland cement,aggregate,glass-fiber meshPortland cement,aggregate,glass-fiber meshPortland cement,aggregate,glass-fiber meshGypsum,fiberglass matw/acrylic coatingEngineered gypsumfiber coreGypsum withpaper facingFlexural strength (psi) 1200 750 900 750 Not Indicated Not Indicated Not IndicatedCompressive strength (psi) 4200 N.A. 2500 2250 450-600 500 Not IndicatedRecommended for wet areasby ANSI (American NationalStandards Institute)ü ü ü ü ü û ûApproved for use in residentialsteam room applications ü ü ü ü With Limitation 1 û ûGypsum-free ü ü ü ü û û ûFree of glass fibers ü û û û û ü üCuts cleanly & easily ü û û û ü ü üNon-abrasive ü û û û ü ü üPatented ProGrid recessedfastener pattern* ü û û û û û ûWarrantyLifetime limited;transferable (materialand labor)30-year limited;transferableLifetime limited;non-transferable30-year limited;non-transferableLifetime limited;non-transferable20-year limited;transferableWeight (lbs./ft 2 ) 2.3 < 3 3 3 2 2 1.8Product characteristicsBest selling brand ofbackerboard. Delivers morecompressive and flexuralstrength than any otherbackerboard on the market.ProGrid has superiortile adhesion over otherbackerboards. ExclusiveMoldBlock Protection resistsmoisture and mold.Contains aggregate; canscratch porcelain and enamelsurfaces. Product must bescored on both sides andglass mesh must be cut aftersnapping. When not tiledover, can only be painted insmall areas because boardis designed to micro-crack(Durock FAQs, www.usg.com).Contains aggregate; canscratch porcelain and enamelsurfaces. Product must bescored on both sides andglass mesh must be cut aftersnapping. Data on ASTM testsfor mold growth not available.Contains abrasive aggregate;can scratch porcelain andenamel surfaces. Productmust be scored on both sidesand glass mesh must be cutafter snapping.Tile wall applications have amaximum total weight limit of 4lbs per square foot; tiles cannotbe larger than 3/8”x 14”x 14”(DensShield product guide,www.gp.com).Fiberock is not approved bythe International Building Codefor use in wet areas. Productcomposition is almost identicalto greenboard; contains over80% gypsum, which candisintegrate in wet areas.Additional warranty information:not warranted for tile greater than14”x14” or less than 6”x6”.May vary bymanufacturer;non-transferableThe 2006 InternationalResidential Code (IRC) disallowsthe use of greenboard in wetareas. Product has gypsumcore that can disintegrate withcontinuous moisture exposureand paper facing that servesas food source for mold.ANSI AN-3.5.1.1 and gypsummanufacturers caution againstusing greenboard in wetareas (www.gp.com,www.nationalgypsum.com,www.usg.com).1DensShield can only be used in residential steam room applications with a maximum shower size of 48 sq. ft.*HardieBacker ProGrid board 3x5 onlywww.hardiebacker.com1-866-4-HARDIE