N.Y.C. Admin. Code § BC 1404: Section BC 1404: Materials

1404.1 General.

Materials used for the construction of exterior walls shall comply with the provisions of this section. Materials not prescribed herein shall be permitted, provided that any such alternative has been approved.

1404.2 Water-resistive barrier.

Not fewer than one layer of No. 15 asphalt felt complying with ASTM D 226 for Type 1 felt or other approved materials shall be attached to the studs or sheathing, with flashing as described in Section 1405.4 of this code, in such a manner as to provide a continuous water-resistive barrier behind the exterior wall veneer. Combustible water-resistive barriers shall comply with special inspection requirements of Chapter 17 of this code.

1404.3 Wood.

Exterior walls of wood construction shall be designed and constructed in accordance with Chapter 23.

1404.3.1 Basic hardboard.

Basic hardboard shall conform to the requirements of ANSI A135.4.

1404.3.2 Hardboard siding.

Hardboard siding shall conform to the requirements of ANSI A135.6 and, where used structurally, shall be so identified by the label of an approved agency.

1404.4 Masonry.

Exterior walls of masonry construction shall be designed and constructed in accordance with this chapter and Chapter 21. Masonry units, mortar and metal accessories used in anchored and adhered veneer shall meet the physical requirements of Chapter 21. The backing of anchored and adhered veneer shall be of concrete, masonry, steel framing or wood framing. Continuous insulation meeting the applicable requirements of this code shall be permitted between the backing and the masonry veneer.

1404.5 Metal.

Exterior walls constructed of cold-formed steel, structural steel or aluminum shall be designed in accordance with Chapters 20 and 22, as applicable.

1404.5.1 Aluminum siding.

Aluminum siding shall conform to the requirements of AAMA 1402.

1404.5.2 Cold-rolled copper.

Copper shall conform to the requirements of ASTM B 370.

1404.5.3 Lead-coated copper.

Lead-coated copper shall conform to the requirements of ASTM B 101.

1404.6 Concrete.

Exterior walls of concrete construction shall be designed and constructed in accordance with Chapter 19.

1404.7 Glass-unit masonry.

Exterior walls of glass-unit masonry shall be designed and constructed in accordance with Chapter 21.

1404.8 Plastics.

Plastic panel, apron or spandrel walls as defined in this code shall not be limited in thickness, provided that such plastics and their assemblies conform to the requirements of Chapter 26 and other applicable requirements of this chapter, and are constructed of approved weather-resistant materials of adequate strength to resist the wind loads for cladding specified in Chapter 16.

1404.9 Vinyl siding.

Vinyl siding shall be certified and labeled as conforming to the requirements of ASTM D 3679 by an approved agency.

1404.10 Fiber-cement siding.

Fiber-cement siding shall conform to the requirements of ASTM C 1186, Type A or ISO 8336, Category A, and shall be so identified on labeling listing an approved agency.

1404.11 Exterior insulation finish system (EIFS).

EIFS shall be designed and constructed in accordance with Section 1408.

1404.12 Polypropylene siding.

Polypropylene siding shall be certified and labeled as conforming to the requirements of ASTM D 7254 and those of Section 1404.12.1 or 1404.12.2 of this code by an approved agency. Polypropylene siding shall be installed in accordance with manufacturer's instructions and the requirements of Section 1405.18 of this code. Polypropylene siding shall be secured to the building so as to provide weather protection for the exterior walls of the building.

1404.12.1 Flame spread index.

The certification of the flame spread index shall be accompanied by a test report stating that all portions of the test specimen ahead of the flame front remained in position during the test in accordance with ASTM E 84 or UL 723.

1404.12.2 Distance between adjacent buildings.

The distance between a building with polypropylene siding and the adjacent building shall be not less than 10 feet (3048 mm).

1404.13 Foam plastic insulation.

Foam plastic insulation used in exterior wall covering assemblies shall comply with Chapter 26 and be fireblocked in accordance with Section 718.2.6.1.