Adhered Veneer 2017.1104 - The Masonry Society
10/30/2017ADHERED MASONRY VENEER SYSTEMSOld Problems and New ChallengesRobert C. Haukohl, PEThe Masonry Society is a registered Provider with theAmerican Institute of Architects Continuing EducationSystems. Credit earned on completion of this program will bereported to CES Records for AIA members. Certificates ofcompletion for non-AIA members are available upon request.This program is registered with AIA/CES for continuingprofessional education. As such, it does not include contentthat may be deemed or construed to be an approval orendorsement by the AIA of any material of construction or anymethod or manner of handling, using, distributing or dealingin any material or product.Questions related to specific materials, methods, and serviceswill be addressed at the conclusion of this presentation.21
10/30/2017COURSE DESCRIPTIONAdhered masonry veneer systems have continued to evolve sincebecoming popular in the 1950’s, with standards and installationguides trailing but eventually catching up. Now, energy codes anddrainage plane requirements present new challenges for designersand installers, with old (yet still very relevant) concerns aboutdurability and construction practices continuing to haunt the industry.This presentation will cover the basics about adhered masonryveneer, its comparative advantages and disadvantages, and ways inwhich the industry is trying to cope with old problems and newchallenges.LEARNING OBJECTIVES Types of adhered masonry veneer Comparative advantages and disadvantages Design standards and installation guides Common problems with adhered masonry veneer New challenges Conclusions and recommendations2
10/30/2017ADHERED MASONRY VENEERMASONRYThat which is built by a mason; anything constructed of thematerials used by masons, such as stone, brick, tiles, or thelike. – Masonry Contractors Association of America (MCAA)ADHERED VENEERMasonry veneer secured to and supported by the backingthrough adhesion. – TMS 402TYPES OF ADHERED MASONRY VENEER Thin Set (direct applied with no lath) Thick Set (with metal lath) Panelized (proprietary metal panel systems) Prefabricated panels (manufactured panels) Prefabricated panels (cast panels)3
10/30/2017THIN SET ON CMUUNIT MASONRYBOND COATCMUTHIN SET ON STUDSUNIT MASONRYBOND COATCEMENT BOARDBUILDING PAPERWRBSHEATHING4
10/30/2017THICK SET ON CMUUNIT MASONRYBOND COATSCRATCH COATMETAL LATHCMUTHICK SET ON STUDSUNIT MASONRYBOND COATSCRATCH COATMETAL LATHBUILDING PAPERWRBSHEATHING5
10/30/2017THICK SET ON STUDSTHICK SET ON STUDS6
10/30/2017THICK SET ON STUDSTHICK SET ON STUDS7
10/30/2017THICK SET ON STUDSTHICK SET ON STUDS8
10/30/2017PANELIZED SYSTEMUNIT MASONRYADHESIVEMETAL PANELBUILDING PAPERWRBSHEATHINGPANELIZED SYSTEM9
10/30/2017PANELIZED SYSTEMPhoto courtesy of BIAPANELIZED SYSTEM10
10/30/2017PREFABRICATED - MANUFACTUREDPANELBUILDING PAPERSHEATHINGPREFABRICATED - MANUFACTURED11
10/30/2017PREFABRICATED – MANUFACTUREDPREFABRICATED - MANUFACTUREDPhoto courtesy of BIA12
10/30/2017PREFABRICATED - CASTPhoto courtesy of BIAPREFABRICATED – CAST13
10/30/2017PREFABRICATED - CASTBASIC COMPONENTS OF ADHERED MASONRYVENEER SYSTEMS Backing / SubstrateConcreteCMUExisting masonryWood studs / sheathingSteel studs / sheathing Weather Resistive Barrier (WRB)Air barrier / vapor barrierRigid insulationCement boardMetal lath / proprietary metal panelMortar scratch coat and bond coatUnit masonryThin brickTileNatural stoneManufactured units (“cast stone” or “cultured stone”)14
10/30/2017ADVANTAGES Inexpensive relative to traditional masonryThin profileLighter weightVersatileCan be installed by “moderately skilled craftsmen”Speed of installationLess material, energy, trucking to make the brickCan be panelizedDISADVANTAGES DurabilitySound ratingsFire ratingsInexpensive?“Moderately skilled craftsmen”?Conflicting installation requirementsChallenges: Lack of a clear drainage planeDoesn’t work well as a barrier systemDoesn’t work well with continuous insulation requirements.15
10/30/2017CODES 2015 IBC Chapter 14 Exterior WallsSection 1405.10 Adhered masonry veneerWRB, flashing, thickness, hot/cold weather, stucco TMS 402-16 Chapter 12 VeneerSection 12.3 Adhered VeneerBacking, thickness, weight, shear bond 50 psi (ASTM C482)BOND STRENGTH TMS 402 12.3.2.4 Adhesion developed betweenadhered veneer units and backing shall have a shearstrength of at least 50 psi (345 kPa) based on grossunit surface area when tested in accordance withASTM C482, or shall be adhered in compliance withArticle 3.3 C of TMS 602. TMS 602 3.3C Placing Adhered Veneer ASTM C482 Standard Test Method for Bond Strengthof Ceramic Tile to Portland Cement Paste16
10/30/2017STANDARDS ASTM C1088-14 Standard Specification for Thin Veneer BrickUnits Made From Clay or Shale ASTM C1670-14 Standard Specification for AdheredManufactured Stone Masonry Veneer Units ASTM C1780-15 Standard Practice for Installation Methods forAdhered Manufactured Stone Masonry Veneer ASTM C1242-15 Standard Guide for Selecting, Design, andInstallation of Dimension Stone Attachment Systems [natural thinstone] ASTM C1063-16a Standard Specification for Installation ofLathing and Furring to Receive Interior and Exterior PortlandCement-Based PlasterTHIN BRICK CLASSIFICATIONASTM C1088 Grades: Interior / Exterior Types:Type TBS (Standard)—Thin veneer brick for general use inmasonry.Type TBX (Select)—Thin veneer brick for general use inmasonry where a higher degree of precision and lowerpermissible variation in size than permitted for Type TBS isrequired.Type TBA (Architectural)—Thin veneer brick for general use inmasonry selected to produce characteristic architecturaleffects resulting from nonuniformity in size and texture of theindividual units. When the type is not specified, the requirements forType TBS will govern.17
10/30/2017DESIGN AND INSTALLATION GUIDES BIA Tech Note 28C Thin Brick VeneerNCMA TEK 20-1 Key Installation Checkpoints for ManufacturedStone VeneerRMMI Adhered Natural Stone Veneer Installation GuideMVMA Installation Guide and Detailing Options for Compliancewith ASTM C1780 for Adhered Manufactured Stone VeneerTCNA Handbook for Ceramic, Glass, and Stone Tile InstallationBSI Natural Thin Stone VeneersNSVI Installation Guide and Helpful TipsIMI Seminar Adhered Masonry Veneer SystemsANSI A108 Installation of Ceramic TileILC Thin Veneer Installation GuideBE CAREFUL OF POSSIBLE CONFLICTS – THERE ARE LOTSOF REFERENCES OUT THEREWHAT COULD GO WRONG? Freeze-thaw durabilityVeneer falls offDomino effect – if one unit goes, the rest tend to followUse of “dry” joints: susceptible to water intrusion Less than 100% coverage on back of masonrySkip the scratch coat and just apply daubs of mortar to back ofbrick: “lick and stick” Insufficient fastening of meshToo few fasteners / fastener pull-through Materials not rated for wet environmentFiberboard backing Insufficient drainage / trapped moistureDoesn’t work well as a barrier systemDeteriorated backingCan’t install below gradeCan’t rely on a surface seal Movement accommodation18
10/30/2017ADHERED MASONRY ISSUESPhoto courtesy of FEMAADHERED MASONRY ISSUES19
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10/30/2017ADHERED MASONRY ISSUESADHERED MASONRY ISSUESWindow TrimRoofSidingBattenThin BrickWindows26
10/30/2017ADHERED MASONRY ISSUESSiding to RoofWindow to TrimTrim to SidingRoof to WallSiding to BattenBatten to BrickADHERED MASONRY ISSUES27
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10/30/2017ADHERED MASONRY ISSUESMOVEMENT JOINTS TMS 402: Design and detail the veneer toaccommodate differential movement TMS 602: Indicate type and location of movementjoints on the project drawings BIA Technical Note 28C:Extend movement joints through thickness of entire veneerassembly, for full length or height of veneer, includingparapetsSpace no more than 18 ft. (5.5 m) o.c. in either directionMax. area between movement joints should not exceed 144sq. ft. (13.4 m²) or length-to-height or height-to-length ratio of2½ to 1Align veneer movement joints directly over substratemovement jointsFor proprietary modular and prefabricated panels, followmanufacturer’s instructions31
10/30/2017NEW CHALLENGES Air barrier / vapor retarder requirementsAdds another non-bonded layer Continuous insulation requirementsBrings veneer farther away from substrate Drainage plane requirementsIsn’t the WRB enough? Where should these things be placed?It depends How do you detail these systems around openings Save for another presentation NEW CHALLENGES Air barrier / vapor retarderGoes on the “warm in winter” side of the insulation unless not used at all Continuous insulation requirementsCan go inboard or outboard of CMU / studsRequires anchor design Drainage plane requirementsSometimes WRB isn’t enough even a double layerNeed a clear path to the drainage planeNeed an unobstructed drainage planeNeed a clear path to drain32
10/30/2017THICK SET ON CMU WITHDRAINAGE MAT AND AIR BARRIERUNIT MASONRYBOND COATSCRATCH COATMETAL LATHDRAINAGE MATAIR BARRIER/WRBCMUTHICK SET ON CMU WITHDRAINAGE MAT, AIR BARRIER, INSULATIONUNITMASONRYBOND COATSCRATCH COATMETAL LATHDRAINAGE MATCEMENT BOARDRIGID INSULATIONAIR BARRIER/WRBCMU33
10/30/2017THICK SET ON CMU WITHDRAINAGE MAT, AIR BARRIER, INSULATIONUNITMASONRYBOND COATSCRATCH COATMETAL LATHRIGID INSULATIONDRAINAGE MATAIR BARRIER/WRBCMUTHICK SET ON STUDS WITHDRAINAGE MATUNITMASONRYBOND COATSCRATCH COATMETAL LATHDRAIANGE MATBUILDING PAPERWRBSHEATHING34
10/30/2017THICK SET ON STUDS WITHDRAINAGE MAT AND INSULATIONUNITMASONRYBOND COATSCRATCH COATMETAL LATHDRAINAGE MATCEMENT BOARDRIGID INSULATIONWRB / BPSHEATHINGTHICK SET ON STUDS WITHDRAINAGE MAT AND INSULATIONUNITMASONRYBOND COATSCRATCH COATMETAL LATHRIGID INSULATIONDRAINAGE MATWRB / BPSHEATHING35
10/30/2017PANELIZED SYSTEM ON STUDS WITHDRAINAGE MATUNIT MASONRYADHESIVEMETAL PANELDRAINAGE MATWRB / BPSHEATHINGPANELIZED SYSTEM ON STUDS WITHDRAINAGE MAT AND INSULATIONUNITMASONRYADHESIVEMETAL PANELDRAINAGE MATCEMENT BOARDRIGID INSULATIONWRB / BPSHEATHING36
10/30/2017PANELIZED SYSTEM ON STUDS WITHDRAINAGE MAT AND INSULATIONUNITMASONRYADHESIVEMETAL PANELRIGID INSULATIONDRAINAGE MATWRB / BPSHEATHINGCONCLUSIONS Code requirements have made systems morecomplicated but despite the complexity it’s still not impossible to designand build an energy efficient and functioning wall system Designers and contractors need to understand buildingcode and manufacturers’ requirements. Don’t use moisture sensitive materials. Is adhered masonry veneer still cost effective?37
10/30/2017REFERENCES Brock, Linda. “11th International Brick/Block Masonry Conference.” How Thin Is Too Thin? Economicsand Durability of the New Thin Brick Veneer Systems, 1997.TCNA Handbook for Ceramic, Glass, and Stone Tile Installation. Tile Council of North America, 2016.Kwon, Renae, and Jean Wu. “Adhered Masonry Veneer Systems: Understanding a StickySituation.” Applicator, vol. 38.4, Fall 2016.Wigboldy, Jason. “Attaching Lath for Adhered Masonry Veneer over Continuous Insulation: An AddedLayer of Insulation Requires a Stronger and Corrosion Resistant Lath Fastener Whether for TraditionalThree-Coat Stucco or Adhered Stone Veneer.” Walls & Ceilings, 1 Feb. 2016, pp. 24–26.Building Science Institute. “Natural Thin Stone Veneer Technical Information Guide.” Elgin, Illinois,2008.United States, Congress, “Continuous Insulation – Cladding/Furring Attachment – Code ComplianceBrief, U.S. Department of Energy.Filloramo, Richard, and Chris Bupp. “Energy-Efficient Design with Masonry Construction .”TheConstruction Specifier, 22 Oct. 2014.Diqui, Jeff. “Ensuring Moisture Protection for Manufactured Stone.” The Construction Specifier, 4 Jan.2013.Bae/Mae, David H. “Thin Stone Facade Problems and Causes of Failure.” Failures, The PennsylvaniaState University, 2012, failures.wikispaces.com/Thin Stone Facade Problems and Causes of Failure.Foam Sheathing Coalition. “Guide to Attaching Exterior Wall Coverings through Foam Sheathing toWood or Steel Wall Framing.” FSC Tech Matters, 7 Dec. 2011.Fechino, Steven. “Pavers, Thin Brick and Stone, and Thin Veneer.” Masonry Magazine, 28 Sept. ating-adhered-masonry-veneer/.“Where's the Drainage Plane?” On The Wall, vol. 20, no. 2, Fall 2010, inal.pdf.Brian, Trimble E. “The Emergence of Thin Brick: Understanding Adhered Veneer.” The ConstructionSpecifier, 29 June 2015, n-brick-understandingadhered-veneer/print/.Wilson, Randy. “Thin Brick When Is It the Right Approach?” Masonry IONS?38
Oct 01, 2017 · ADHERED MASONRY VENEER SYSTEMS Old Problems and New Challenges Robert C. Haukohl, PE The Masonry Society is a registered Provider with the . Type TBS (Standard)—Thin veneer brick for general use in masonry. Type TBX (Select)—Thin veneer brick for general us
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International Building Code, Adhered Manufactured Stone Veneer products are referred to as Adhered Masonry Veneer. In the ICC-ES Acceptance Criteria, AC51, the product is called Precast Stone Veneer. This guide will use AMSV (Adhered Manufactured Stone Veneer) when referencing the product. Backup - The interior or exterior assembly to which AMSV
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List of Plates Plate 1 Tea break! 4 Plate 2 Outline of robbed out wall visible in Trench 2c. Taken from the N. 8 Plate 3 W facing fireplace [2055], during excavation. Taken from the SW. 9 Plate 4 General view of fire place and rake out area following excavation, Trench 2c. Taken from the SW. 9 Plate 5 Stake [2091], set into natural sand (2072). Taken from the N 10
