Guide to EIFS ConstructionGuideto EIFS...

Fig. 2 CONCRETE AND MASONRYEIFS attached to concrete or masonryusing adhesive. Mechanical fastenersmay also be used.

Finish Coat

Reinforcing MeshEmbedded in Base Coat

Base Coat

Insulation Board

Adhesive Applied To

Concrete OrMasonry Substrate

Fig. 1 STEEL OR WOOD FRAMINGEIFS may be attached by mechanicalfasteners (as shown) or by adhesive (asshown below).

Fasteners

Insulation Board

Wood or Steel Framing

Reinforcing Mesh

Substrate

Base Coat

Embedded in Base Coat

Finish Coat

Insulation Board

2000 EIMA ISSUE: 6/00Printed in U.S.A.

These drawings and comments are for general information only, and EIMA specifically disclaims any design or constructionintent or responsibility. THERE ARE NO WARRANTIES, EXPRESS OR IMPLIED, ISSUED OR MADE BY EIMA INCONNECTION WITH THESE DRAWINGS AND COMMENTS OR REGARDING THE USE OF EIFS. These drawings are notintended and should not be used as a substitute for the EIFS system manufacturer's specifications and recommendedconstruction practices and/or for professional building design services.

The specification, design and construction of all EIFS must comply with local building codes and standards, applicablecompliance reports and the individual manufacturer's system requirements. These requirements differ materially. Only the EIFSmanufacturer or design professional can furnish specifications, details, drawings, and construction practices to be followed foractual construction and use of an EIFS product and for compliance with applicable local building codes and constructionpractices. The successful installation and performance of EIFS cladding is dependent upon the proper design and construction ofthe adjacent materials and systems of the structure. For these reasons, only a licensed and qualified design professional cancreate and issue specifications, drawings and details for actual or prospective construction or renovation using EIFS. Thesedrawings and comments apply only to new construction beginning in 2000, and are not intended for inspections, retrofit or repair.These drawings are not intended as an exclusive method for achieving desired performance. Alternative configurations mayachieve equal or better performance.

These drawings and comments apply only to complete EIFS products as specifically defined in the current edition of EIMAClassification Paper.

EIFS Industry Members Association3000 Corporate Center DriveMorrow, GA 30260(800) 294-3462

TYPICAL EIFS CONFIGURATION

Guide to EIFS ConstructionGuide to EIFS Construction 1

Insulation Board AppliedIn a Running Bond Pattern

Starter Row of Insulation

Board At CornersInterlock Edges of Insulation

Board Used to OffsetInsulation Board Joints From

Sheathing Board Joints

At Corners of WallInsulation Board “L” Cut

Penetrations

Encapsulate Insulation BoardEdge With Reinforcing Mesh

And Base Coat.

Strips of Reinforcing MeshPlaced Diagonally At

Opening Corners

Fig. 2 MESH TREATMENT AT FENESTRATIONTo further guard against cracking, diagonal pieces ofmesh called butterflies are placed over the wrappedmesh at corners of the opening.

Fig. 1 EPS BOARD LAYOUTThe Expanded Polystyrene Board (EPS) is placed on thewall in a running-bond pattern. The first row is generallyhalf width to minimize EPS board joints from lining upwith sheathing joints. To decrease base coat stress atcorners of wall openings, EPS boards are “L” cut.


EPS BOARD LAYOUT

Window flashings, not shown,are placed at the head and sill.

NOTE:






Wrap Reinforcing Mesh

Terminate EIFS Above GradeAccording To Local

Building Code

Finished Grade -Sloped Away From Wall

EIFS Lamina AppliedTo Foundation

Fig. 1 WRAPPING - Alternate 1Fiber mesh located between substrate andinsulation is attached either by base coat,adhesive, or mechanical anchorage.

Fig. 2 WRAPPING - Alternate 2To give the foundation the appearance ofEIFS, the reinforced base coat and finish maybe lapped onto the foundation. Terminate EIFS Above Grade

According To LocalBuilding Code

Finished Grade -Sloped Away From Wall


OPTIONS FOR TERMINATING AT FOUNDATION







SEALANT CONFIGURATION OPTIONS

Fig. 1 FILLET JOINTFillet beads may be used for weather seal joints,such as at window and door perimeter. Note thatsealant is applied to the reinforced base coat andnot to the finish coat.

Fig. 2 BUTT JOINTExpansion joints should be designed for a minimumof four times the anticipated movement, but not lessthan 3/4” (19 mm). For joints where movement hasbeen determined to be negligible, the minimum buttjoint size is 1/2” (13 mm). Note that sealant isapplied to the reinforced base coat and not to thefinish coat.

TriangularBacker Rod

Insulation Board

Reinforcing MeshEmbedded InBase Coat

Embedded In Base Coat

Quarter Round Backer

Breaker Options Below)

Reinforcing Mesh

Bond Breaker Options

Bond BreakerTape

Sealant With ClosedCell Backer Rod

Fillet Joint

Rod (Refer to Bond

Insulation Board

Refer to the sealant manufacturer’s guidelinesfor specific installation requirements.







WINDOW - METAL FRAMED, EXPOSED SILL PAN






Fig. 1 WINDOW HEADEven with the use of head flashing, sealant is stillrequired, as indicated, and serves to complement theflashing in establishing a water tight, continuous weatherseal between the EIFS and the window frame.

Fig. 2 WINDOW SILL AND JAMBThe purpose of a sill pan flashing is to catch waterthat may breach the window’s barrier or pass beyondthe sealant. The flashing should extend between theframing members of the rough opening and besloped to allow water to drain to the outside of theEIFS. Also,

To properlyfabricate this detail, the EIFS should be installedbefore the pan flashing is set in place. This detailreflects an exposed sill pan. However, this type ofwindow may also be installed with a concealed sillpan as depicted in figure 2 of drawings 6 and 7.

sill pan flashing end dams should extend1/8" to 3/16" beyond outer plane of window frame.Exposed end dam edge may be covered with sealantif desired for improved appearance.

Framing

Substrate

Insulation BoardAdhesively OrMechanically

Attached To Wall


Reinforcing MeshEmbedded In

Head Flashing

Sealant WithBond Breaker

Window

Base Coat

Sill Pan FlashingWith Turned Up SidesAnd Water Tight Seams

Slope EIFS Below Sill

Sealant With ClosedCell Backer Rod Around

Place Weeps In SealantAt Sill Every 12” (305 mm)

Sealant

Entire Perimeter OfWindow

Corrosion ResistantBlocking


Protective WrapLapped Into Sill Flashing

Refer to the window manufacturer’s guidelinesfor specific installation requirements.


WINDOW - NAILING FIN, CONCEALED SILL PAN

Fig. 1 WINDOW HEADSome finned windows are considered “self-flashed”. However, a careful examinationshould be made of the joinery between the head, jamb and sill fins to ensurecontinuous protection against air and water passage. Any breach in the window’souter cladding should be resolved with additional flashing and/or sealant. Consultthe window manufacturer for installation recommendations.

Fig. 2 WINDOW SILL AND JAMBThe purpose of a sill pan flashing is to catch water thatmay breach the window’s barrier or pass beyond thesealant. The flashing should extend between the framingmembers of the rough opening and be sloped to allowwater to drain to the outside of the EIFS. The spacermaterial should hold the nailing fin off of the sill panextension by at least 1/8” (3 mm) to form drainagechannels.

Framing

Substrate


Attached To Wall

Wrap ReinforcingMesh



Window WithNailing Fin

Base Coat

Nailing Fin

Sill Pan Flashing WithTurned Up Sides, SlopedFor Positive Drainage

Slope EIFS BelowSill 6:12 Min.

Sealant With ClosedCell Backer Rod Typ.

Spacer Material

Around Entire PerimeterOf Window

Insulation Board BeneathSill Attached With MechanicalFasteners

Sealant

Leave Gap Open


Refer to the window manufacturer’s guidelinesfor specific installation requirements.


Protective WrapLapped Into Sill Flashing







WINDOW - BRICK MOLD, CONCEALED SILL PAN

Fig. 2 WINDOW SILL AND JAMBThe purpose of a sill pan flashing is to catchwater that may breach the window’s barrier orpass beyond the sealant. The flashing shouldextend between the framing members of therough opening and be sloped to allow water todrain to the outside of the EIFS. The drainagemedium should hold the EPS insulation board offof the sill pan extension by at least 1/8” (3mm). This detail depicts a concealed sill pan.However, this type of window may also beinstalled with an exposed sill pan as depicted infigure 2 of drawing 5.

Framing

Substrate


Attached To Wall




Window WithBrick Mold

Base Coat

Head Flashing

Sill Pan Flashing WithTurned Up Sides AndWater Tight Seams

Slope EIFS ForDrainage

Sealant With ClosedCell Backer Rod Typ.

Drainage Medium

Around Entire PerimeterOf Window

Insulation Board BeneathSill Attached With MecahnicalFasteners

Sealant

Leave Gap Open

Sealant


Refer to the window manufacturer’s guidelines forspecific installation requirements.

Protective Wrap LappedInto Sill Pan Flashing

Fig. 1 WINDOW HEADEven with the use of head flashing, sealant is still required, as indicated,and serves to complement the flashing in establishing a water tight,continuous weather seal between the EIFS and the window frame.








Fig. 1 HOSE BIBB ATTACHMENTFor accessories subjected to handling, such as hosebibs and railing supports, wood blocking offersprotection to the EIFS while providing a base for rigidattachment. The wood blocking may be painted orencapsulated in flashing.

Fig. 2 ELECTRICAL ATTACHMENTElectrical box installations, whether for light fixturesor outlets, may be shimmed back to the sheathingto allow for flush mounting of the electricalaccessory.

EIFS Finish Coat

Decay and CorrosionResistant BlockingPainted Or Flashed

For Protection

Hose Bibb

Cell Backer RodSealant with Closed

Substrate

Fixture

Insulation BoardAdhesively orMechanically

Attached To Wall

Sealant with Closed


EIFS Finish Coat

Cell Backer Rod

Sealant In FilletConfiguration

Seal Fixture ToFace of EIFS


PLUMBING AND ELECTRICAL PENETRATIONS







SLEEVED ATTACHMENTS

Finish Coat

Fig. 1 SHUTTER ATTACHMENTSleeve and fastener attachment is adequate for mostaccessories. Downspouts, mail boxes, awnings, and otherlightweight accessories may be mounted using theprocedure shown. For non-structural sheathing such asgypsum board, ensure fastener(s) is placed in framing orblocking to provide rigid attachment.

Fig. 2 WIRING PENETRATIONSPhone lines, cable lines, outdoor speaker wireand the like may penetrate the EIFS with theuse of a sleeved grommet sized to fit snugglyaround the wire. The grommet flangeprovides an area for sealant application.

Corrosion ResistantFastener and Sleeve


SleeveSealant Placed Around

Substrate

Before InsertingSet In Sealant

Shutter

Sleeved Grommet

Cable

Sealant PlacedAround Grommet

Embedded inReinforcing Mesh

Substrate

Corrosion Resistant


Attached To Wall

Fastener

Base Coat

Flange

Base Coat

1/4” (6 mm) Min.Insulation Board

Adhesively orMechanically

Attached To Wall







EIFS TERMINATION AT PROPERLY

FLASHED DECK


Upper Flashing

Deck Board

Header Joist

Intermediate

Lower FlashingSet In A Bed Of

Sealant

Reinforcing Mesh

Finish Coat

Embedded in

Flashing

Base Coat


Attached To Wall

DECK SECTIONThe EIF System is held off of deck surface to

facilitate removal of foreign matterwhich may cause water retention, and todecrease exposure of wall system toprecipitation, particularly snow and ice.

allow for installation and maintenance ofsealant,







EXPANSION JOINTS AND REVEALS

Fig. 1 FLOOR LINE EXPANSION JOINTExpansion joints shall be installed in the EIF System asper manufacturers’ recommendations but as a minimumwhere changes in substrate occur, where a joint exists inthe substrate, and at floor lines in wood framedconstruction.

Fig. 2 AESTHETIC REVEALSReveals cut into the insulation board serve anaesthetic function by offering the look of jointswithout having to terminate the system. Groovescan also serve as a drip edge at soffits or headlocations of fenestrations.

Substrate


Sealant With Closed

Gap in Sheathing

Cell Backer Rod

Reinforcing MeshEmbedded in

Finish Coat

Base Coat

For Recessed Sealant JointsSlope EIFS SurfaceOutward To Drain

Substrate

Reinforcing MeshUsed For Detail Work

Finish Coat

Base CoatEmbedded in

Reinforcing Mesh

Reveal

SurfaceLapped Onto Wall

3/4" (19 mm)Min.


Attached To Wall


Attached To Wall







CHIMNEY FLASHING

Fig. 1 PROPER FLASHINGThe flashing located on the high side of thechimney shall divert water away form the EIFSystem running down the side of the chimney.Turned out flashing ensures proper diversion ofwater.

Fig. 3 EIFS CHIMNEY WITH CRICKETCricket detailing helps divert water around the chimneyand alleviates snow and ice buildup. Diverter flashing isused anywhere an area of water shed terminates into avertical wall.

Sealant WithClosed CellBacker Rod

Sealant

With Shingles

Metal FlashingStep Flashed

Flashing

Flashing

Seal EIFSFlashingInterface

Chimney Cap

Sheathing

Seal BetweenEIF System AndChimney Cap

Flashing ExtendingUp Chimney BehindEIFS

EIF System HeldOff OF Roof Line

Diverter FlashingSee Detail 15

Cricket Flashing

Seal BetweenEIF System AndChimney Cap

Fig. 2 CHIMNEY WITH EIFS INSTALLEDWith the EIF System terminating at the top of theturned out flashing leg and a fillet bead of sealantapplied to the flashing/EIFS interface, water is divertedaround the chimney.

NOTE: Flashing shall have watertight joints.Refer to the Sheet Metal and Air ConditioningContractors National Association (SMACNA)for Flashing Configurations.

EIF System HeldOff OF Roof Line







SOFFIT AND GABLE END






Fig. 1 GABLE ENDThe frieze board should extend over the EIFS faceapproximately 1 1/2” (38 mm). For less of an overlap it isadvisable to terminate the EPS board 1/2” (13 mm) from thewood blocking and apply sealant with closed cell backer rod.

Fig. 2 NON EIFS SOFFITRefer to the note for Figure 1.

Sealant


Attached To Wall



Base Coat

Insulation BoardAdhesively OrMechanicallyAttached To Wall

Sealant

Flashing


Insulation BoardAdhesively OrMechanicallyAttached To Wall

Frieze Board

Fig. 3 EIFS SOFFITAs with all inside corners, the reinforcing mesh fromboth legs of the corner should lap onto the adjacentleg 8” (200 mm). Under certain circumstances, anexpansion joint may be required at the insidecorner. Refer to the manufacturer’s specificationsfor guidelines.




DORMER FLASHING






Fig. 1 FLASHINGSFlashings should extend up wall. Wherewindow is close to roof line, continuedormer-to-roof flashing into windowopening.

Fig. 2 COMPLETED DORMERThe EIF system should be terminated abovethe roof line to facilitate roof repairs andtreatment of EIFS termination. In addition,the clearance allows for free-flow of waterand minimizes accumulation of debris.Sealant with closed cell backer rod should beplaced between the EIF system and gable andalso around window perimeter. For gable endwith frieze board see detail 13.

Valley FlashingInstalled Over ShinglesAt Lower Termination

Dormer ToRoof Flashing

Dormer ShinglesOver Valley Flashing

Flashing“Step Flashed”

With Shingles

Ridge Flashing



Terminate EIF SystemAbove Roof Line.

NOTE: Flashing shall have watertight joints.Refer to the Sheet Metal and Air ConditioningContractors National Association (SMACNA)for Flashing Configurations.


ROOF AND WALL INTERSECTION

t = thickness of insulationboard plus 1”

Fig. 1 FLASHINGFlashing should extend up behind EIF system. A diverterflashing should be used where ever a water shedterminates into a vertical wall (as shown).

Fig. 2 EIFS INSTALLEDThe EIF system should be terminated above the roof line tofacilitate roof repairs and treatment of EIFS termination. Inaddition, the clearance allows for free-flow of water andminimizes accumulation of debris. Set the diverter flashing ina full bed of roof cement between the roof sheathing andunderlayment.


Shingles “Step Flashed”With Roof Flashings

Shingles “Step Flashed”With Roof Flashings

EIFS TerminatedAbove Roof Line

Roof Shingles

Fascia

Diverter SeamsWatertight

Roof Shingles

Drip Edge

6” (152 mm)

6” (152 mm)

Substrate

12” (305 mm)t

100

110 min.

NOTE: Flashing shall have watertight joints.

Seal BetweenDiverter and DripFlashings






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