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The following guide specification is
presented in an easy-to-copy-and-paste format.
In addition, if you prefer, you may
download this guide specification in .doc or .pdf formats:
EMSHIELD WFR2 and WFR3 3-Part Spec (.doc)
EMSHIELD WFR2 and WFR3 3-Part Spec (.pdf) |
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SPECIFICATION
Sections 07 90 00 / 07 95 00
EMSHIELD WFR2 / EMSHIELD WFR3 by EMSEAL
Preformed, Pre-Compressed, Self-Expanding, Fire
Rated Sealant System with Silicone Pre-Coated Surface,
Watertight, Energy-Efficient, 2 or 3 Hour Rated,
Exterior and Interior Wall Joints
****NOTE to specifier: select WFR2 for two-hour
applications and WFR3 for three-hour applications and delete the
other or if using both systems make reference to respective
locations in the spec and on the drawings****
PART 1 – GENERAL
1.01 Work Included
The work shall consist of furnishing and
installing waterproof, fire rated expansion joints
in accordance with the details shown on the plans
and the requirements of the specifications.
Preformed sealant shall be silicone pre-coated,
preformed, pre-compressed, self-expanding, sealant
system.
Related Work
Division 4 - Masonry
Division 7 - Thermal & Moisture Protection
Division 7 - Sealants, Caulking and
Waterproofing
Division 7 - Joint Firestopping
1.02 Submittals
General – Submit the following
according to Division 1 Specification Section.
Standard Submittal Package –
Submit typical expansion joint drawing(s) indicating
pertinent dimensions, general construction,
expansion joint opening dimensions and product
information.
Sample of material is required at
time of submittal.
All products must be identified
by a UL listing number and must be listed in the UL
and ULC Online Certification Directories as proof
that they have been tested according to UL 2079 and
manufactured under UL’s "Follow Up" service.
All products must be certified by
independent laboratory test report to exceed the
requirements of curtain wall performance tests ASTM
E330, E283-04, and E331. Product must meet or exceed
hurricane-force wind loading with no deflection at
both positive and negative pressures up to 4954
Pascals - equal to 200 mph winds (ASTM
E330-02-procedure A).
All products must be certified by independent
laboratory test report to ASTM E90-09 and to meet or
exceed an STC 62 in STC 68 wall and OITC 52 rating
in an OITC 52 wall.
All products must be certified by independent
laboratory test report to be free in composition of
any waxes or wax compounds using FTIR and DSC
testing.
All products shall be certified in writing to be:
a) capable of withstanding 150°F (65°C) for 3 hours
while compressed down to the minimum of movement
capability dimension of the basis-of-design product
(-25% of nominal material size) without evidence of
any bleeding of impregnation medium from the
material; and b) that the same material after the
heat stability test and after first being cooled to
room temperature will subsequently self-expand to
the maximum of movement capability dimension of the
basis-of-design product (+25% of nominal material
size) within 24 hours at room temperature 68°F
(20°C).
1.03 Product Delivery, Storage and Handling
Deliver products to site in Manufacturer’s
original, intact, labeled containers. Handle and
protect as necessary to prevent damage or
deterioration during shipment, handling and storage.
Store in accordance with manufacturer’s installation
instructions.
1.04 Basis-of-Design
All joints shall be designed to
meet the specified performance criteria of the
project as manufactured by: (USA & International)
EMSEAL JOINT SYSTEMS, LTD 25 Bridle Lane,
Westborough, MA 01581-2603, Toll Free: 800-526-8365.
(Canada) EMSEAL, LLC 120 Carrier Drive, Toronto,
Ontario, Canada M9W 5R1 Toll Free: 800-526-8365.
www.emseal.com
Alternate manufacturers must
demonstrate that their products meet or exceed the
design criteria and must submit certified
performance test reports performed by nationally
recognized independent laboratories as called for in
section 1.02 Submittals. Submittal of alternates
must be made three weeks prior to bid opening to
allow proper evaluation time.
1.05 Quality Assurance
The General Contractor will
conduct a pre-construction meeting with all parties
and trades involved in the treatment of work at and
around expansion joints including, but not limited
to, concrete, mechanical, electrical, HVAC,
landscaping, masonry, curtain wall, waterproofing,
fire-stopping, caulking, flooring and other finish
trade subcontractors. All superintendents and
foremen with responsibility for oversight and
setting of the joint gap must attend this meeting.
The General Contractor is responsible to coordinate
and schedule all trades and ensure that all
subcontractors understand their responsibilities in
relation to expansion joints and that their work
cannot impede anticipated structural movement at the
expansion joints, or compromise the achievement of
watertighness or life safety at expansion joints in
any way.
Warranty – Manufacturer’s
standard warranty shall apply.
LEED Building Performance
Requirements:
The VOC of the silicone must
not exceed 40 grams/liter.
Products must be proved to be
certified by independent test report to exceed
the requirements of curtain wall performance
tests ASTM E330, E283-04, and E331. Product must
meet or exceed hurricane-force wind loading with
no deflection at both positive and negative
pressures up to 4954 Pascals - equal to 200 mph
winds (ASTM E330-02-procedure A).
Products must be proved to
have been certified by independent test report
in accordance with ASTM C518-04 and demonstrate
an R-Value per 1-inch (25mm) of depth of not
less than 1.03 at as-installed nominal joint
size compression.
Products must be proved to
have been certified by independent test report
to ASTM E90-09 and to meet or exceed the STC and
OITC rating for the project.
Product must be proved by
independent test report to have air permeability
not to exceed 0.02 L/(s.m2) at 75 Pascals as
required by the Air Barrier Association of
America (ABAA) and in accordance with ASTM
E283-04.
PART 2 – PRODUCT
2.01 General
Provide watertight,
energy-efficient, 2 or 3 hour fire rated, exterior
and interior joints in vertical-plane walls
(above-grade). Typical locations include
applications for exterior wall joints and interior
wall joints where a 2 or 3 hour fire rating is
required or desired. System shall perform
waterproofing, fire-rating, movement-accommodation
functions as well as contribute to thermal
insulation and sound attenuation as the result of a
single installation and without the addition of
ancillary fire-blankets, mineral wool, coverplates,
etc.
Provide EMSHIELD WFR2 / EMSHIELD
WFR3 as manufactured by EMSEAL JOINT SYSTEMS LTD and
as indicated on drawings for vertical expansion
joint locations.
Sealant shall be silicone pre-coated, preformed,
pre-compressed, self-expanding, 2 hour-rated,
sealant system. Sealant system shall be comprised of
the following components: 1.)
fire-retardant-impregnated foam pre-coated on both
sides with an intumescent fire-proofing material and
pre-coated at the outer layers with waterproof
silicone, 2.) field-applied epoxy adhesive primer,
3.) field-injected silicone sealant bands.
Material shall be capable of movements of +25%,
-25% (50% total) of nominal material size. Standard
sizes from 1/2" (25 mm) to 6" (250 mm). Depth of
seal is 4" (100 mm) for WFR2 and 5" (128mm) for
WFR3.
Silicone external color facings to be
low-modulus, waterproof silicone factory- applied to
the foam while it is partially pre-compressed to a
width greater than maximum joint extension and cured
before final compression. When compressed to final
supplied dimension, a bellow(s) to handle movement
must be created in the silicone coating. Silicone
coatings to be available in a range of not less than
26 standard colors for coordination with typical
building materials. Separate colors may be chosen
for each coated surface.
Select the sealant system model
appropriate to the movement and design requirements
at each joint location that meet the project
specification or as defined by the structural
engineer of record.
Manufacturer’s Checklist must be
completed by expansion joint subcontractor and
returned to manufacturer at time of ordering
material.
2.02 Fabrication
EMSHIELD WFR2 / EMSHIELD WFR3 by
EMSEAL JOINT SYSTEMS LTD must be supplied
precompressed to less than the joint size, packaged
in shrink-wrapped lengths (sticks).
Directional changes and
terminations into horizontal plane surfaces to be
provided by factory-manufactured universal-90-degree
single units containing minimum 12-inch long leg and
6-inch long leg or custom leg on each side of the
direction change or through field fabrication in
strict accordance with published installation
instructions.
PART 3 – EXECUTION
3.01 Installation
Preparation of the Work Area
The General contractor shall
provide properly formed and prepared expansion
joint openings constructed to the exact
dimensions and elevations shown on the contract
drawings. Deviations from these dimensions will
not be allowed without the written consent of
the engineer of record.
The contractor shall clean
the joint opening of all contaminants
immediately prior to installation of expansion
joint system. Repair spalled, irregular or
unsound joint surfaces using accepted industry
practices for repair of the substrates in
question. Remove protruding roughness to ensure
joint sides are smooth. Ensure that there is
sufficient depth to receive the full depth of
the size of the EMSHIELD WFR2 / EMSHIELD WFR3
being installed plus at least ¼-inch (6mm) for
the application of corner beads. Refer to
Manufacturers Installation Guide for detailed
step-by-step instructions.
No drilling, or screwing, or
fasteners of any type are permitted to anchor
the sealant system into the substrate.
3.02 Clean and Protect
Protect the system and its
components during construction. Subsequent damage to
the expansion joint system will be repaired at the
general contractor’s expense. After work is
complete, clean exposed surfaces with a suitable
cleaner that will not harm or attack the finish.
END OF SECTION |
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