1
SPECIFICATION
Sections 07 90 00 / 07 95 00
BACKERSEAL by EMSEAL
Preformed, Pre-Compressed, Self-Expanding, Sealant System
Watertight, Energy-Efficient, Exterior and Interior Above Grade Wall Joints
PART 1 – GENERAL
1.01
Work Included
A.
The work shall consist of furnishing and installing waterproof expansion joints in
accordance with the details shown on the plans and the requirements of the
specifications. Preformed sealant shall be preformed, pre-compressed, self-
expanding, sealant system.
B.
Related Work
•
Division 4 - Masonry
•
Division 7 - Thermal & Moisture Protection
•
Division 7 - Sealants, Caulking and Waterproofing
1.02
Submittals
A.
General – Submit the following according to Division 1 Specification Section.
B.
Standard Submittal Package – Submit typical expansion joint drawing(s) indicating
pertinent dimensions, general construction, expansion joint opening dimensions and
product information.
C.
Sample of material is required at time of submittal.
D.
All products must be certified by independent test report to exceed the requirements
of curtain wall performance tests ASTM E330, E283-04, and E331.
E.
All products must be certified by independent laboratory test report to ASTM E90-09
and to meet or exceed an STC 53 in STC 68 wall and OITC 49 rating in an OITC 52
wall.
F.
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
A.
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
A.
All products shall be designed to meet the specified performance criteria of the
BACKERSEAL product as manufactured by: (USA & International) EMSEAL JOINT
2
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
B.
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
A.
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.
B.
Warranty – Manufacturer’s standard warranty shall apply.
C.
LEED Building Performance Requirements:
1)
Products must be proved to be certified by independent test report to exceed the
requirements of curtain wall performance tests ASTM E330, E283, 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).
2)
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 1.8 at as-installed nominal joint size compression.
3)
Products must be proved to have been certified by independent test report to
ASTM E-90-09 and to meet or exceed an STC rating of 53 and OITC rating of 49
PART 2 – PRODUCT
2.01
General
A.
Provide watertight, energy-efficient exterior and interior joints in vertical-plane walls
(above-grade). Typical locations include, but are not limited to the following:
applications in window perimeters, other façade penetrations such as doors, store
fronts, vents, HVAC units, panel to panel joints, curtain walls, control joints, between
dissimilar materials, and new-to-existing connections.
B.
Provide BACKERSEAL as manufactured by EMSEAL JOINT SYSTEMS LTD and as
indicated on drawings for vertical expansion joint locations.
C.
Preformed sealant shall be preformed, pre-compressed, self-expanding, sealant
system. Expanding foam to be cellular foam impregnated with a water-based, non-
drying, polymer-modified 100% acrylic dispersion.
D.
Material shall be capable of movements of +25%, -25% (50% total) of nominal
material size.
3
E.
BACKERSEAL to be installed recessed from the substrate faces and to receive a field-
applied coating of low-modulus liquid sealant (by others) not to exceed ¼ inch, (6mm)
thick.
F.
BACKERSEAL to be installed at depth sufficient to allow installation of properly sized
backer rod and liquid sealant (by others) in front of material.
G.
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.
H.
Manufacturer’s Checklist must be filled out by expansion joint subcontractor and
returned to manufacturer at time of ordering material.
2.02
Fabrication
A.
BACKERSEAL by EMSEAL must be supplied precompressed to less than the joint size,
packaged in reels or shrink-wrapped lengths (sticks) with a mounting adhesive on one
face.