HomeMy WebLinkAbout07 24 00 EIFS.pdfTHE NATIONAL BANK OF INDIANAPOLIS NBICM08C
5760 EAST MAIN STREET INTERIOR & EXTERIOR
CARMEL, INDIANA 46033 CONSTRUCTION SPECIFICATIONS
EXTERIOR INSULATION & FINISH SYSTEMS 07 24 00 - 1
SECTION 07 24 00 - EXTERIOR INSULATION AND FINISH SYSTEMS
PART 1 - GENERAL
1.01 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 1 Specification Sections, apply to this Section.
1.02 SUMMARY
A. Extent of exterior insulation finish systems is indicated on drawings.
B. Related Sections include the following:
1. Division 6 Section "Rough Carpentry" for plywood sheathing and wood framing.
2. Division 7 Section "Joint Sealants" for sealing joints in EIFS with elastomeric
joint sealants.
3. Division 9 Section "Gypsum Sheathing" for gypsum sheathing soffit.
1.03 DEFINITIONS
A. Class PB EIFS: A "nonload bearing, exterior wall cladding system that consists of an
insulation board attached either adhesively, mechanically, or both to the substrate; an
integrally reinforced base coat; and a textured protective finish coat," as defined by
ASTM C 1397.
1.04 PERFORMANCE REQUIREMENTS
A. EIFS Performance: Comply with the following:
1. Bond Integrity: Free from bond failure within EIFS components or between sys-
tem and supporting wall construction, resulting from exposure to fire, wind loads,
weather, or other in-service conditions.
2. Weathertightness: Resistant to water penetration from exterior into EIFS and
assemblies behind it or through them into interior of building that results in
deterioration of thermal-insulating effectiveness or other degradation of EIFS and
assemblies behind it, including substrates, supporting wall construction, and
interior finish.
B. Class PB EIFS: Provide EIFS having physical properties and structural performance that
comply with the testing for Class PB, including the following:
1. Mildew Resistance of Finish Coat: Sample applied to 2-by-2-inch clean glass
substrate, cured for 28 days, and showing no growth when tested per ASTM D
3273.
2. Drainage: 3 samples capable of draining water, and having an average minimum
true drainage efficiency of 90 percent when tested per EIMA 200.2.
THE NATIONAL BANK OF INDIANAPOLIS NBICM08C
5760 EAST MAIN STREET INTERIOR & EXTERIOR
CARMEL, INDIANA 46033 CONSTRUCTION SPECIFICATIONS
EXTERIOR INSULATION & FINISH SYSTEMS 07 24 00 - 2
1.05 SUBMITTALS
A. Product Data: For each type and component of EIFS indicated.
B. Shop Drawings: For EIFS. Include plans, elevations, sections, details of components, details of
penetration and termination, flashing details, joint locations and configurations, fastening
and anchorage details including mechanical fasteners, and connections and attachments to
other work.
C. Samples for Initial Selection: For each type of finish-coat color and texture indicated.
1.06 QUALITY ASSURANCE
A. Installer Qualifications: An installer who is certified in writing by EIFS manufacturer as
qualified to install manufacturer's system using trained workers.
B. Source Limitations: obtain EIFS from single source from single EIFS manufacturer and
from sources approved by EIFS manufacturers compatible with system components.
C. Mockups: Build mockups as part of masonry mock-up to verify selections made under
sample submittals and to demonstrate aesthetic effects and set quality standards for
materials and execution and set quality standards for fabrication and installation.
1.07 DELIVERY, STORAGE, AND HANDLING
A. Deliver materials in original, unopened packages with manufacturers' labels intact and
clearly identifying products.
B. Store materials inside and under cover; keep them dry and protected from weather, direct
sunlight, surface contamination, aging, corrosion, damaging temperatures, construction
traffic, and other causes.
1. Stack insulation board flat and off the ground.
2. Protect plastic insulation against ignition at all times. Do not deliver plastic
insulating materials to Project site before installation time.
3. Complete installation and concealment of plastic materials as rapidly as possible
in each area of construction.
1.08 PROJECT CONDITIONS
A. Weather Limitations: Maintain ambient temperatures above 40 deg F for a minimum of
24 hours before, during, and after adhesives or coatings are applied. Do not apply EIFS
adhesives or coatings during rainfall. Proceed with installation only when existing and
forecasted weather conditions and ambient outdoor air and substrate temperatures permit
EIFS to be applied, dried, and cured according to manufacturers' written instructions and
warranty requirements.
B. Field Measurements: Verify actual dimensions required for prefabricated panels by fi eld
measurements before fabrication and indicate measurements on Shop Drawings.
THE NATIONAL BANK OF INDIANAPOLIS NBICM08C
5760 EAST MAIN STREET INTERIOR & EXTERIOR
CARMEL, INDIANA 46033 CONSTRUCTION SPECIFICATIONS
EXTERIOR INSULATION & FINISH SYSTEMS 07 24 00 - 3
1. Established Dimensions: Where field measurements cannot be made without
delaying the Work, establish dimensions and proceed with fabricating
prefabricated panels without field measurements. Coordinate construction to
ensure that actual dimensions correspond to established dimensions.
1.09 COORDINATION
A. Coordinate installation of EIFS with related Work specified in other Sections to ensure
that wall assemblies, including sheathing, flashing, trim, joint sealants, windows, and
doors, are protected against damage from the effects of weather, age, corrosion, moisture,
and other causes.
PART 2 – PRODUCTS
2.01 MANUFACTURERS
A. Manufacturers: Subject to compliance with requirements, provide products by one of the
following:
1. Class PB EIFS:
a. Dryvit Systems, Inc.
b. Sonneborn, Div. of ChemRex, Inc.; SKW-MBT Construction Chemicals.
c. Sto Corp.
B. Basis of Design: Sto StoTStoTherm Classic Ci.
2.02 MATERIALS
A. Compatibility: Provide substrates, water-/weather-resistive barriers, adhesive, fasteners,
board insulation, reinforcing meshes, base- and finish-coat systems, sealants, and
accessories that are compatible with one another and approved for use by EIFS
manufacturer for Project.
B. Colors, Textures, and Patterns of Finish Coat: As selected by Architect from
manufacturer's full range.
C. Air Moisture barrier
1. StoGuard®
a. Joint Treatment, Rough Opening Protection, and Detail Components:
1) Sto Gold Fill® - ready mixed coating applied by trowel or knife
for rough opening protection of frame walls and joint treatment
of sheathing when used with StoGuard Mesh. Also used as a
detail component with StoGuard Mesh to splice over back flange
of starter track, flashing, and similar ship lap details
THE NATIONAL BANK OF INDIANAPOLIS NBICM08C
5760 EAST MAIN STREET INTERIOR & EXTERIOR
CARMEL, INDIANA 46033 CONSTRUCTION SPECIFICATIONS
EXTERIOR INSULATION & FINISH SYSTEMS 07 24 00 - 4
2) Sto Gold Coat® - ready mixed coating applied by brush, roller or
spray for rough opening protection of frame walls and joint
treatment of sheathing when used with StoGuard Fabric. Also
used as a detail component with StoGuard Fabric to splice over
back flange of starter track, flashing, and similar ship lap details
3) StoGuard RapidFill™ - one component rapid drying gun-applied
joint treatment for sheathing. Also used at static transition joints
or seams in construction and to seal fish mouths, wrinkles,
seams, gaps, holes, or other voids in StoGuard air barrier
materials. Also used as a detail component to splice over back
flange of starter track, flashing, and similar ship lap details
4) StoGuard RapidSeal™ - one component rapid drying gun-
applied rough opening protection for frame and CMU walls
without mesh or fabric reinforcement. Also use as a joint
treatment for sheathing when used with StoGuard Mesh. Also
used to seal fish mouths, wrinkles, seams, gaps, holes, or other
voids in StoGuard air barrier materials
2. Waterproof Coating: Sto Gold Coat® - ready mixed waterproof coating for
concrete, concrete masonry, wood-based sheathing, and glass mat gypsum
sheathing
3. Transition Membrane: StoGuard Transition Membrane - flexible air barrier
membrane for continuity at transitions such as sheathing to foundation, dissimilar
materials (CMU to frame wall), wall to balcony floor slab or ceiling, flashing
shingle lap transitions, floor line deflection joints, masonry control joints, and
through wall joints in masonry or frame construction
D. Primer/Sealer: EIFS manufacturer's standard substrate conditioner designed to seal
substrates from moisture penetration and to improve the bond between substrate of type
indicated and adhesive used for application of insulation.
E. Flexible-Membrane Flashing: Cold-applied, fully self-adhering, self-healing,
rubberized- asphalt and polyethylene-film composite sheet or tape and primer; EIFS
manufacturer's standard or product recommended in writing by EIFS manufacturer.
F. Drainage Mat and Spacers: EIFS manufacturer's standard or product recommended in
writing by EIFS manufacturer with manufacturer's standard corrosion-resistant
mechanical fasteners suitable for intended substrate.
G. Adhesive for Application of Insulation: EIFS manufacturer's standard formulation de-
signed for indicated use, compatible with substrate.
H. Molded, Rigid Cellular Polystyrene Board Insulation: Comply with EIFS manufacturer's
requirements, ASTM C 578 for Type I, and EIMA's "EIMA Guideline Specification for
Expanded Polystyrene (EPS) Insulation Board" for more stringent requirements for
material performance and qualities of insulation.
1. Flame-Spread and Smoke-Developed Indexes: 25 and 450 or less, respectively,
per ASTM E 84.
THE NATIONAL BANK OF INDIANAPOLIS NBICM08C
5760 EAST MAIN STREET INTERIOR & EXTERIOR
CARMEL, INDIANA 46033 CONSTRUCTION SPECIFICATIONS
EXTERIOR INSULATION & FINISH SYSTEMS 07 24 00 - 5
2. Dimensions: Provide insulation boards not more than 24 by 48 inches and in
thickness indicated but not more than 4 inches thick or less than thickness
allowed by ASTM C 1397.
3. Channeled Board Insulation: EIFS manufacturer's standard factory-fabricated
profile with linear, vertical drainage channels, slots, or waves on the back side of
board.
I. Reinforcing Mesh: Balanced, alkali-resistant, open-weave glass-fiber mesh treated for
compatibility with other EIFS materials, made from continuous multiend strands with
retained mesh tensile strength of not less than 120 lbf/in. per EIMA 105.01, complying
with ASTM D 578 and the following requirements for minimum weight:
1. Standard-Impact Reinforcing Mesh: Not less than 4.0 oz./sq. yd..
2. High-Impact Reinforcing Mesh: Not less than 15 oz./sq. yd..
J. Base-Coat Materials: EIFS manufacturer's standard mixture complying with[ one of] the
following requirements for material composition and method of combining materials:
1. Job-mixed formulation of portland cement complying with ASTM C 150, Type
I, white or natural color; and manufacturer's standard polymer-emulsion
adhesive designed for use indicated.
K. Primer: EIFS manufacturer's standard factory-mixed elastomeric-polymer primer for
preparing base-coat surface for application of finish coat.
L. Finish-Coat Materials: EIFS manufacturer's standard acrylic-based coating with
enhanced mildew resistance complying with the following requirements for material
composition and method of combining materials:
1. Factory-mixed formulation of polymer-emulsion binder, colorfast mineral
pigments, sound stone particles, and fillers.
2. Sealer: Manufacturer's waterproof, clear acrylic-based sealer for protecting
finish coat.
M. Water: Potable.
N. Mechanical Fasteners: EIFS manufacturer's standard corrosion-resistant fasteners
consisting of thermal cap, standard washer and shaft attachments, and fastener indicated
below; selected for properties of pullout, tensile, and shear strength required to resist de-
sign loads of application indicated; capable of pulling fastener head below surface of
insulation board.
O. Trim Accessories: Type as designated or required to suit conditions indicated and to
comply with EIFS manufacturer's written requirements; manufactured from UV-
stabilized PVC; and complying with ASTM D 1784, manufacturer's standard Cell Class
for use in-tended and ASTM C 1063.
1. Casing Bead: Prefabricated one-piece type for attachment behind insulation, of
depth required to suit thickness of coating and insulation, with face leg
perforated for bonding to coating and back leg.
THE NATIONAL BANK OF INDIANAPOLIS NBICM08C
5760 EAST MAIN STREET INTERIOR & EXTERIOR
CARMEL, INDIANA 46033 CONSTRUCTION SPECIFICATIONS
EXTERIOR INSULATION & FINISH SYSTEMS 07 24 00 - 6
2. Drip Screed/Track: Prefabricated one-piece type for attachment behind
insulation with face leg extended to form a drip, of depth required to suit
thickness of coating and insulation, with face leg perforated for bonding to
coating and back leg.
3. Weep Screed/Track: Prefabricated one-piece type for attachment behind
insulation with perforated face leg extended to form a drip and weep holes in
track bottom, of depth required to suit thickness of coating and insulation, with
face leg perforated for bonding to coating and back leg; designed to drain
incidental moisture that gets into wall construction to the exterior at
terminations of EIFS with drainage.
4. Window Sill Flashing: Prefabricated type for both flashing and sloping sill over
framing beneath windows; with end and back dams; designed to direct water to
exterior.
2.03 ELASTOMERIC SEALANTS
A. Elastomeric Sealant Products: Provide EIFS manufacturer's listed and recommended
chemically curing, elastomeric sealant that is compatible with joint fillers, joint
substrates, and other related materials, and complies with requirements for products and
testing indicated in EIMA's "EIMA Guide for Use of Sealants with Exterior Insulation
and Finish Systems, Class PB" and with requirements in Division 7 Section "Joint
Sealants."
B. Sealant Color: As selected by Architect from manufacturer's full range.
2.04 MIXING
A. General: Comply with EIFS manufacturer's requirements for combining and mixing
materials. Do not introduce admixtures, water, or other materials except as
recommended by EIFS manufacturer. Mix materials in clean containers. Use materials
within time period specified by EIFS manufacturer or discard.
PART 3 – EXECUTION
3.01 EXAMINATION
A. Examine substrates, areas, and conditions, with Installer present, for compliance with
requirements for installation tolerances and other conditions affecting performance of
EIFS.
B. Examine roof edges, wall framing, flashings, openings, substrates, and junctures at other
construction for suitable conditions where EIFS will be installed.
C. Proceed with installation only after unsatisfactory conditions have been corrected.
3.02 PREPARATION
THE NATIONAL BANK OF INDIANAPOLIS NBICM08C
5760 EAST MAIN STREET INTERIOR & EXTERIOR
CARMEL, INDIANA 46033 CONSTRUCTION SPECIFICATIONS
EXTERIOR INSULATION & FINISH SYSTEMS 07 24 00 - 7
A. Protect contiguous work from moisture deterioration and soiling caused by application
of EIFS. Provide temporary covering and other protection needed to prevent spattering
of exterior finish coats on other work.
B. Protect EIFS, substrates, and wall construction behind them from inclement weather
during installation. Prevent penetration of moisture behind drainage plane of EIFS and
deterioration of substrates.
C. Prepare and clean substrates to comply with EIFS manufacturer's written requirements
to obtain optimum bond between substrate and adhesive for insulation.
D. Primer/Sealer: Apply over substrates to protect substrates from degradation and where
required by EIFS manufacturer for improving adhesion of insulation to substrate.
E. Water/Weather Barrier: Apply over substrates to protect substrates from degradation and
to provide water-/weather-resistive barrier. Comply with manufacturer’s written
instructions for installation over various substrates.
4. Tape and seal joints, exposed edges, terminations, and inside and outside corners
of sheathing unless otherwise indicated by EIFS manufacturer's written
instructions.
F. Starter Track: Comply with manufacturer’s written instructions for installation of starer
track at base of wall and other EIFS terminations as designated on detail drawings or
where indicated by Architect.
G. Backwrapping: Apply a strip of detail mesh to the water/weather barrier at all system
terminations except where the starter track is installed. Provide a minimum of 4 inches
of mesh onto the wall to be able to wrap around the insulation board and cover a
minimum of 2-1/2 inches on the outside face of the insulation board. Pre-wrap
terminating edges of insulation board.
3.03 EIFS INSTALLATION
A. General: Comply with ASTM C 1397 and EIFS manufacturer's written instructions for
installation of EIFS as applicable to each type of substrate indicated.
B. Trim: Apply trim accessories at perimeter of EIFS, at expansion joints, at window sills,
and elsewhere as indicated, according to EIFS manufacturer's written instructions.
Coordinate with installation of insulation.
1. Drip Screed/Track: Use at bottom edges of EIFS, unless otherwise indicated.
2. Weep Screed/Track: Use at bottom termination edges, at window and door heads
of EIFS with drainage, unless otherwise indicated.
3. Window Sill Flashing: Use at windows, unless otherwise indicated.
4. Casing Bead: Use at other locations.
C. Drainage Mat: Apply wrinkle free, continuously, with edges overlapped and secured
over water-/weather-resistive barrier according to manufacturer's written instructions.
THE NATIONAL BANK OF INDIANAPOLIS NBICM08C
5760 EAST MAIN STREET INTERIOR & EXTERIOR
CARMEL, INDIANA 46033 CONSTRUCTION SPECIFICATIONS
EXTERIOR INSULATION & FINISH SYSTEMS 07 24 00 - 8
D. Board Insulation: Attach insulation to substrate in compliance with ASTM C 1397, EIFS
manufacturer's written requirements.
E. Expansion Joints: Install at locations indicated and where required by EIFS
manufacturer.
F. Base Coat: Apply to exposed surfaces of insulation in minimum thickness recommended
in writing by EIFS manufacturer, but not less than 1/16-inch dry-coat thickness.
G. Reinforcing Mesh: Embed type indicated below in wet base coat to produce wrinkle-free
installation with mesh continuous at corners and overlapped not less than 2-1/2 inches or
otherwise treated at joints to comply with ASTM C 1397 and EIFS manufacturer's
written requirements. Do not lap reinforcing mesh within 8 inches of corners.
Completely embed mesh, applying additional base-coat material if necessary, so
reinforcing-mesh color and pattern are not visible.
1. Standard-impact reinforcing mesh, unless otherwise indicated.
2. High-impact reinforcing mesh from grade to +9’-6” above finish floor..
H. Additional Reinforcing Mesh: Apply strip reinforcing mesh around openings extending 4
inches beyond perimeter. Apply additional 9-by-12-inch strip reinforcing mesh
diagonally at corners of openings (re-entrant corners). Apply 8-inch- wide strip
reinforcing mesh at both inside and outside corners unless base layer of mesh is lapped
not less than 4 inches on each side of corners.
1. At aesthetic reveals, apply strip reinforcing mesh not less than 8 inches wide.
2. Embed strip reinforcing mesh in base coat before applying first layer of
reinforcing mesh.
I. Primer: Apply over dry base coat according to EIFS manufacturer's written instructions.
J. Finish Coat: Apply in thickness required by EIFS manufacturer to produce a uniform
finish of color and texture matching approved sample and free of cold joints, shadow
lines, and texture variations.
K. Sealer Coat: Apply over dry finish coat, in number of coats and thickness required by
EIFS manufacturer.
3.04 Air/moisture barrier installation
B. Transition Detailing with StoGuard Transition Membrane:
1. At floor line deflection joints up to 1 inch (25 mm) wide, and static joints and
transitions such as: sheathing to foundation, dissimilar materials (i.e., CMU to
frame wall), flashing shingle-lap transitions, and wall to balcony floor slab or
ceiling:
a. Apply waterproof coating (Sto Gold Coat) liberally to properly prepared
surfaces with brush, roller, or spray.
THE NATIONAL BANK OF INDIANAPOLIS NBICM08C
5760 EAST MAIN STREET INTERIOR & EXTERIOR
CARMEL, INDIANA 46033 CONSTRUCTION SPECIFICATIONS
EXTERIOR INSULATION & FINISH SYSTEMS 07 24 00 - 9
b. Place pre-cut lengths of StoGuard Transition Membrane centered over
the transition in the wet coating. At changes in plane crease the
membrane and similarly place the membrane material in the wet coating.
At floor line deflection joints achieve a slightly concave profile (recessed
into the joint) of the membrane.
c. Immediately top coat the membrane with additional coating and apply
pressure with brush or roller to fully embed the membrane in the coating
and achieve a smooth and wrinkle-free surface without gaps or voids.
d. Apply coating liberally along all top horizontal edges on walls and along
all edges on balcony floor slabs to fully seal the edges.
e. Overlap minimum 2 inches (51 mm) at ends and adhere lap seams
together with coating. Shingle lap vertical seams and vertical to
horizontal intersections with minimum 2 inch (51 mm) overlap.
2. At movement joints up to 1 inch (25 mm) wide with up to + 50% movement such
as masonry control joints, and through wall joints in masonry or frame
construction:
a. Insert backer rod sized to friction fit in the joint (diameter 25% greater
than joint width).
b. Recess the backer rod ½ inch (13 mm).
c. Apply the waterproof coating liberally to properly prepared surfaces with
brush, roller, or spray along the outer surface on each side of the joint
(not in the joint).
d. Immediately place the membrane by looping it into the joint against the
backer rod surface to provide slack.
e. Embed the membrane in the wet coating along the outer surface on the
sides of the joint by top coating with additional coating material and
applying pressure with a brush or roller.
3. For all applications, after the membrane installation is complete and the
waterproof coating is dry:
a. Apply a final liberal coat of the waterproof coating to all top horizontal
edges on walls to ensure waterproofing integrity. Similarly apply coating
at all edges on balcony floor slabs.
b. Inspect the installed membrane for fish mouths, wrinkles, gaps, holes or
other deficiencies. Correct fish mouths or wrinkles by cutting, then
embedding the area with additional coating applied under and over the
membrane.
c. Seal gaps, holes, and complex geometries at three dimensional corners
with StoGuard RapidFill or StoGuard RapidSeal.
C. Transition Detailing with StoGuard RapidFill At flashing shingle laps, and through wall
penetrations such as pipes, electrical boxes, and scupper penetrations:
1. Flashing leg or penetration flange must be seated flat against the wall surface
without gaps. Apply StoGuard RapidSeal liberally with a caulking gun in a zig -
zag pattern across the flashing leg or flange/wall surface seam and spread to a
thickness that covers the flange and fastener penetrations and directs water away
THE NATIONAL BANK OF INDIANAPOLIS NBICM08C
5760 EAST MAIN STREET INTERIOR & EXTERIOR
CARMEL, INDIANA 46033 CONSTRUCTION SPECIFICATIONS
EXTERIOR INSULATION & FINISH SYSTEMS 07 24 00 - 10
from the wall. Extend application minimum 1 inch (25 mm) onto both surfaces
(flashing leg/flange and wall surface).
2. At through wall penetrations without flanges ensure the penetrating element (i.e.,
pipe or scupper) is fitted snug against abutting wall surfaces. Apply a fillet bead
with a caulking gun around the penetration and tool against both surfaces
(penetration and wall surface) to create a bead profile that directs water away
from the penetration. Extend application minimum 1 inch (25 mm) onto both
surfaces.
3.05 INSTALLATION OF JOINT SEALANTS
A. Prepare joints and apply sealants, of type and at locations indicated, to comply with
applicable requirements in Division 7 Section "Joint Sealants" and in EIMA's "EIMA
Guide for Use of Sealants with Exterior Insulation and Finish Systems, Class PB."
1. Clean surfaces to receive sealants to comply with indicated requirements and
EIFS manufacturer's written instructions.
2. Apply primer recommended in writing by sealant manufacturer for surfaces to be
sealed.
3. Install sealant backing to control depth and configuration of sealant joint and to
prevent sealant from adhering to back of joint.
4. Apply masking tape to protect areas adjacent to sealant joints. Remove tape
immediately after tooling joints, without disturbing joint seal.
5. Recess sealant sufficiently from surface of EIFS so an additional sealant
application, including cylindrical sealant backing, can be installed without
protruding be-yond EIFS surface.
6. Apply joint sealants after base coat has cured but before applying finish coat.
3.06 FIELD QUALITY CONTROL
A. A manufacturer’s representative shall be on site for the first day of EIFS installation and
provide a letter stating that the installation is in accordance with their written
recommendations.
3.07 CLEANING AND PROTECTION
A. Remove temporary covering and protection of other work. Promptly remove coating
materials from window and door frames and other surfaces outside areas indicated to
receive EIFS coatings.
B. Provide final protection and maintain conditions, in a manner acceptable to Installer and
EIFS manufacturer that ensure that EIFS are without damage or deterioration at time of
Substantial Completion.
END OF SECTION 07 24 00