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.
