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1998-06-10
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SECTION 07650
FLEXIBLE FLASHING
NOTE ** Sandell Manufacturing Co. laminated copper and
synthetic through-wall flashings.
NOTE **
NOTE ** This section is based on products made by Sandell
Manufacturing Company, Inc., which is located at:
NOTE ** 399 W. Main Street
NOTE ** Amsterdam, NY 12010
NOTE ** Tel: (518) 843-0093
NOTE ** Tel: (800) 283-3888
NOTE ** Fax: (518) 843-0148
NOTE **
NOTE ** Sandell makes several types of laminated copper
flashing, PVC flashing, and self-adhering
rubberized asphalt flashing intended for use in
concealed locations.
NOTE **
NOTE ** SECTION 07650 - FLEXIBLE FLASHING, Copyright 1997,
The Architect's Catalog, Inc.
PART 1 GENERAL
1.1 SECTION INCLUDES
NOTE ** Delete items below not required for project.
A. Laminated metal flashings and counterflashings.
B. Plastic flashings.
C. Self-adhering rubberized asphalt flashings.
D. Mastic for setting and sealing joints.
1.2 RELATED SECTIONS
NOTE ** Delete any sections below not relevant to this
project; add others as required.
A. Section 04810 - Unit Masonry Assemblies.
B. Section 04820 - Reinforced Unit Masonry Assemblies.
C. Section 06100 - Rough Carpentry: Flashings at openings
and sills.
D. Section 07311 - Asphalt Shingles: Flashings associated
with shingle roofing.
1.3 REFERENCES
NOTE ** Delete references from the list below that are not
actually required by the text of the edited
section.
A. SMACNA (ASMM) - Architectural Sheet Metal Manual; Sheet
Metal and Air Conditioning Contractors' National
Association.
1.4 SUBMITTALS
A. Submit under provisions of Section 01300.
B. Product Data: Manufacturer's data sheets showing product
characteristics and including installation instructions.
C. Samples: Actual pieces of flashings specified, not less
than 6 inches (150 mm) square.
1.5 QUALITY ASSURANCE
A. Installation Standard: Comply with recommendations of
SMACNA Architectural Sheet Metal Manual (ASMM).
B. Installer Qualifications: Company with at least five
years of successful experience in weathertight
installation of flashing.
C. Coordination: Interface flashing work with adjacent and
adjoining work to ensure best possible weather resistance
and durability of completed flashing.
1.6 DELIVERY, STORAGE, AND HANDLING
A. Deliver materials to project site in manufacturer's
sealed containers and packaging, bearing manufacturer's
name and product identification.
B. Stack flashing materials to avoid twisting, bending, and
abrasion. Protect materials from weather before
installation.
C. Store mastic materials in sealed containers under cover.
PART 2 PRODUCTS
2.1 MANUFACTURERS
A. Provide products manufactured by Sandell Manufacturing
Company, Inc., 399 W. Main Street, Amsterdam, NY 12010.
ASD. Tel: (518) 843-0093. Fax: (518) 843-0148.
B. Requests for substitutions will be considered in
accordance with provisions of Section 01600.
NOTE ** Delete paragraph above or below; coordinate with
Division 1 requirements.
C. Substitutions: Not permitted.
2.2 MATERIALS
A. Copper Fabric Flashing: Laminated sheet comprised of
copper sheet, asphalt mastic coated on both sides, bonded
under pressure between two layers of asphalt saturated,
woven glass fabric.
NOTE ** Sandell copper fabric flashing is a permanent,
premium quality laminated through-wall flashing
comprised of 5 layers of time-proven waterproofing
materials combined under heat and pressure into a
single sheet.
NOTE **
NOTE ** Select desired copper weight and delete other
choices.
1. Copper weight: 2 oz/sq ft (610 g/sq m).
2. Copper weight: 3 oz/sq ft (915 g/sq m).
3. Copper weight: 5 oz/sq ft (1525 g/sq m).
4. Copper weight: 7 oz/sq ft (2135 g/sq m).
B. Coated Copper Flashing: Copper sheet coated on both
sides with a rubberized asphalt compound weighing not
less than 6 oz/sq ft (1830 g/sq m).
NOTE ** Sandell coated copper flashing is a permanent, high
quality laminated through-wall flashing comprised
of 3 layers of time-proven waterproofing materials
combined into a single sheet. It is flexible and
easily formed by hand at the project site.
NOTE **
NOTE ** Select desired copper weight and delete other
choices.
1. Copper weight: 2 oz/sq ft (610 g/sq m).
2. Copper weight: 3 oz/sq ft (915 g/sq m).
3. Copper weight: 5 oz/sq ft (1525 g/sq m).
4. Copper weight: 7 oz/sq ft (2135 g/sq m).
C. Copper Kraft Flashing: Copper sheet bonded on one side
to waterproofed creped Kraft paper weighing not less than
3 oz/sq ft (915 g/sq m) and reinforced with heavy fibers.
NOTE ** Sandell copper Kraft flashing is a permanent,
economical, through-wall flashing comprised of 3
layers of time-proven waterproofing materials
combined under heat and pressure into a single
sheet. It is flexible and easily formed by hand at
the project site.
NOTE **
NOTE ** Select desired copper weight and delete other
choices.
1. Copper weight: 1 oz/sq ft (305 g/sq m).
2. Copper weight: 2 oz/sq ft (610 g/sq m).
3. Copper weight: 3 oz/sq ft (915 g/sq m).
D. Copper Kraft Duplex Flashing: Copper sheet bonded on
both sides by asphalt to heavy waterproof creped Kraft
paper weighing 3 oz/sq ft (915 g/sq m) and 5 oz/sq ft
(1525 g/sq m) and reinforced with heavy fibers.
NOTE ** Sandell copper Kraft duplex flashing is a
permanent, economical, laminated through-wall
flashing comprised of 5 layers of time-proven
waterproofing materials combined under heat and
pressure into a single sheet. It is flexible and
easily formed by hand at the project site.
NOTE **
NOTE ** Select desired copper weight and delete other
choices.
1. Copper weight: 1 oz/sq ft (305 g/sq m).
2. Copper weight: 2 oz/sq ft (610 g/sq m).
3. Copper weight: 3 oz/sq ft (915 g/sq m).
4. Copper weight: 5 oz/sq ft (1525 g/sq m).
E. Copper Kraft Plus Lead Flashing: Copper and lead sheet
adhered with asphalt to a creped Kraft duplex covering on
one side that is reinforced with interspersed fiberglass
strands.
NOTE ** Sandell copper Kraft plus lead flashing is an
economical flashing that combines the advantages of
copper and lead with unusual flexibility. It is
recommended for frame construction, since the
exposed copper surface has low bonding ability in a
mortar joint.
NOTE **
NOTE ** Select desired total weight of copper and lead and
delete other choice.
1. Combined weight of copper and lead: 2 oz/sq ft (610
g/sq m).
2. Combined weight of copper and lead: 3 oz/sq ft (915
g/sq m).
F. Copper Kraft Duplex Plus Lead Flashing: Copper and lead
sheet bonded on both sides with asphalt to creped Kraft
duplex covering that is reinforced with interspersed
fiberglass strands.
NOTE ** Sandell copper Kraft duplex plus lead flashing is
an economical flashing comprised of time-proven
waterproofing materials combined under heat and
pressure into a single flexible sheet.
NOTE **
NOTE ** Select desired total weight of copper and lead and
delete other choices.
1. Combined weight of copper and lead: 2 oz/sq ft (610
g/sq m).
2. Combined weight of copper and lead: 3 oz/sq ft (915
g/sq m).
3. Combined weight of copper and lead: 5 oz/sq ft (1525
g/sq m).
4. Combined weight of copper and lead: 7 oz/sq ft (2135
g/sq m).
G. PVC Flashing: Non-reinforced polyvinyl chloride sheet;
thickness and weight as follows:
NOTE ** Sandell Nuflex is intended for use as a concealed
waterproofing membrane on foundation walls and
under concrete slabs. The material will not be
physically deformed when stretched at room
temperature, nor will it tear or rip.
NOTE **
NOTE ** Select desired type from those listed below and
delete the others.
1. Sandell Nuflex Type 10: 0.010 in (0.25 mm) thick;
nominal 11 oz/sq yd (373 g/sq m).
2. Sandell Nuflex Type 20: 0.020 in (0.50 mm) thick;
nominal 22 oz/sq yd (746 g/sq m).
3. Sandell Nuflex Type 30: 0.030 in (0.75 mm) thick;
nominal 33 oz/sq yd (1119 g/sq m).
4. Sandell Nuflex Type 60: 0.056 in (0.50 mm) thick;
nominal 60 oz/sq yd (2035 g/sq m).
H. Sando-Seal Self-Adhering Flashing: 40 mil (1.02 mm)
thick membrane comprised of 32 mils (0.8 mm) of highly
adhesive rubberized asphalt integrally bonded to an 8 mil
(0.22 mm) high density, cross laminated polyethylene
film.
NOTE ** Sando-Seal is a fully adhered, self-adhering in-
wall flashing membrane for use with concrete,
masonry, gypsum, or wood wall construction.
NOTE **
NOTE ** Sandell does not endorse the use of self-adhesive
flashing as an equal to copper laminated flashing.
2.3 ACCESSORIES
A. Asphalt Trowel Mastic: Cut-back asphalt containing long
fibered material, in trowel grade consistency.
NOTE ** Retain the paragraph above for all flashings that
include copper sheet. Retain the following
paragraph for Sandell Nuflex PVC flashing. Mastic
is not required for Sando-Seal self-adhering
flashing.
B. Nuflex Mastic: Adhesive formulated for use with PVC
flashing. Tacky, fast-grabbing semi-pressure-sensitive
rubber or resin base adhesive suitable for bonding PVC
sheet to itself and to a wide variety of building
materials.
C. Primer: Manufacturer's special primer formulated to
prepare surfaces for self-adhering flashing.
D. Reglets: Types and profiles as indicated on the drawings
and as recommended by flashing manufacturer.
2.4 FABRICATION
A. Forming: Fabricate flashings true to shape and accurate
in dimension. Form pieces in longest possible lengths to
minimize joints. Fold flashing at corners and at ends of
pans instead of cutting.
B. Joints: Provide not less than 4 inches (100 mm) of
overlap at flashing joints.
PART 3 EXECUTION
3.1 EXAMINATION
A. Verify that surfaces to receive flashing are thoroughly
dry, free from loose materials, and reasonably smooth,
with no sharp edges or projections.
B. Verify that locations to receive flashing are sloped so
water that enters will drain to building exterior.
3.2 PREPARATION
A. Self-Adhering Flashing: Prime all surfaces to receive
self-adhering flashing, and allow to dry for not less
than 20 minutes prior to flashing application.
3.3 INSTALLATION
NOTE ** Edit the paragraphs below to conform to project
requirements. Most paragraphs pertain to copper-
based flashing. If self-adhering or PVC flashings
are only types required, retain paragraphs that
deal with installation of those types.
A. General: Comply with recommendations of SMACNA ASMM.
1. Lap joints minimum of 4 inches (100 mm) and seal
watertight with mastic.
2. Carry flashing vertically as detailed, but not less
than 6 inches (150 mm) above horizontal plane.
3. Extend head and sill flashings not less than 6 inches
(150 mm) beyond edges of openings and turn up to form
watertight pan; seal with mastic.
B. Masonry Flashing: Comply with requirements of Section
04810.
NOTE ** Delete paragraph above or below.
C. Masonry Flashing: Lay horizontal flashing in slurry of
fresh mortar and top with fresh full bed of mortar to
receive masonry units. At vertical surfaces, spot
flashing with mastic to hold in place until masonry has
set.
1. Carry flashing through wall and leave exposed for
inspection.
2. After inspection, cut flashing flush with surface of
masonry.
D. Flashing in Frame Construction: Comply with requirements
of Section 06100.
NOTE ** Delete paragraph above or below.
E. Flashing in Frame Construction: Install over solid
backing, both vertically and horizontally. Secure in
place with mastic; avoid puncturing installed flashing
with nails or other fasteners.
F. PVC Flashing: Lay flashing in full trowel coat of
mastic, lapping joints not less than 6 inches (150 mm).
Roll surface of flashing with rubber hand roller to
remove all air.
3.4 ADJUSTING
A. Remove mortar or other obstructions from weep holes at
flashing locations.
END OF SECTION