36C24218B0566-003.doc

Building 6 Parking Lot

VA Western New York Healthcare System

3495 Bailey Avenue

Buffalo, New York 14215

528-18-s60

SECTION 07 60 00

FLASHING AND MEMBRANE

PART 1 - GENERAL

1.1 DESCRIPTION

Formed sheet metal work for flashing and insulated expansion joint covers are specified in this section.

1.2 RELATED WORK

A.

Concrete installation: Section 03 33 00, Concrete.

1.3 SUBMITTALS

A.

Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.

B.

Shop Drawings:

Flashings

Membranes

Protection board

Expansion joints

C.

Certificates: Stating that aluminum has been given - specified thickness of anodizing.

1.4 APPLICABLE PUBLICATIONS

A.

The publications listed below for a part of this specification to the extent referenced. The publications are referenced in the text by the basic designation only.

B.

American Society for Testing and Materials (ASTM):

A653/A653M-07 Steel Sheet Zinc-Coated (Galvanized) or Zinc Alloy Coated (Galvanized) by the Hot- Dip Process

B209-07 Aluminum and Aluminum-Alloy Sheet and Plate

D1187-97 (R2002) Asphalt Base Emulsions for Use as Protective Coatings for Metal

C.

International Building Code (IBC):

2007 Edition

PART 2 - PRODUCTS

2.1 FLASHING:

A.

Aluminum Sheet: ASTM B209, alloy 3003-H14.

B.

Galvanized Sheet: ASTM, A653.

C.

Nonreinforced, Elastomeric Sheeting: Elastomeric substances reduced to thermoplastic state and extruded into continuous homogenous sheet (0.056 inch) thick. Sheeting shall have not less than 7 MPa (1,000 psi) tensile strength and not more than seven percent tension-set at 50 percent elongation when tested in accordance with ASTM D412. Sheeting shall show no cracking or flaking when bent through 180 degrees over a 1 mm (1/32 inch) diameter mandrel and then bent at same point over same size mandrel in opposite direction through 360 degrees at temperature of -30°C (-20 °F).

D.

Fasteners:

1.

Use galvanized steel or stainless steel for galvanized steel.

2.

Nails:

b.

Minimum diameter for aluminum nails 3 mm (0.105 inch).

d.

Length to provide not less than 22 mm (7/8 inch) penetration into anchorage.

E.

Sealant: As specified in Section 07 92 00, JOINT SEALANTS for exterior locations.

2.2 SHEET METAL THICKNESS

A.

Except as otherwise shown or specified use thickness or weight of sheet metal as follows:

B.

Concealed Locations (Built into Construction):

4.

Galvanized steel: 0.5 mm (0.021 inch) thick.

C.

Thickness of aluminum or galvanized steel is specified with each item.

2.3 FABRICATION, GENERAL

A.

Jointing:

1.

Joints shall conform to following requirements:

a.

Flat-lock joints shall finish not less than 19 mm (3/4 inch) wide.

b.

Lap joints subject to stress shall finish not less than 25 mm (one inch) wide and shall be soldered and riveted.

2.

Flat and lap joints shall be made in direction of flow.

B.

Expansion and Contraction Joints:

1.

Fabricate in accordance with the Architectural Sheet Metal Manual recommendations for expansion and contraction of sheet metal work in continuous runs.

2.

Space joints as shown or as specified.

3.

Space expansion and contraction joints for copper, stainless steel, and copper clad stainless steel at intervals not exceeding 7200 mm (24 feet).

4.

Space expansion and contraction joints for aluminum at intervals not exceeding 5400 mm (18 feet), except do not exceed 3000 mm (10 feet) for gravel stops and fascia-cant systems.

5.

Fabricate slip-type or loose locked joints and fill with sealant unless otherwise specified.

6.

Fabricate joint covers of same thickness material as sheet metal served.

C.

Drips:

1.

Form drips at lower edge of sheet metal counter-flashings (cap flashings), fascias, gravel stops, wall copings, by folding edge back 13 mm (1/2 inch) and bending out 45 degrees from vertical to carry water away from the wall.

2.

Form drip to provide hook to engage cleat or edge strip for fastening for not less than 19 mm (3/4 inch) loose lock where shown.

D.

Edges:

1.

Edges of flashings concealed in masonry joints opposite drain side shall be turned up 6 mm (1/4 inch) to form dam, unless otherwise specified or shown otherwise.

2.4 FINISH

A.

Use same finish on adjacent metal or components and exposed metal surfaces unless specified or shown otherwise.

B.

In accordance with NAAMM Metal Finishes Manual, unless otherwise specified.

C.

Finish exposed metal surfaces as follows, unless specified otherwise:

1.

Aluminum:

a.

Clear Finish: AA-C22A41 medium matte, clear anodic coating, Class 1 Architectural, 18 mm (0.7 mils) thick.

2.5 MEMBRANE

A. Royston 10A-65 Easy-Pave prefabricated reinforced laminate consisting of an impregnated woven fiberglass, high-strength inner fabric reinforcement, sandwiched between two layers of polymer modified bitumen. A 3inch leading edge guarantees a positive compound-to-compound seal at the overlap. Transverse seals to be made using Flex-Flo Adhesive Sealant (FFAS), Royston 104 CM Mastic or via heat sealing. Follow manufacturer’s installation requirements.

2.6 PROTECTION BOARD

A. Carlisle CCW MiraDRAIN 6200 high-performance, high-strength drainage composites consisting of a three-dimensional, high-impact polystyrene core, and a nonwoven filter fabric, with polymeric sheet adhered to the back of the core, to prevent the drainage core from die cutting the waterproofing membrane.

- - - E N D - - -

07 60 00 - 2