Technical Specifications

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1000
ICC-ES Evaluation Report
ESR-3566
Reissued October 2015
This report is subject to renewal October 2016.
www.icc-es.org | [phone] | [phone] A Subsidiary of the International Code Council
®
DIVISION: 04 00 00—MASONRY
Section: 04 73 00—Manufactured Stone Masonry
REPORT HOLDER:
NORSE BUILDING PRODUCTS, INC.
536 MAIN STREET, POST OFFICE BOX 126
ALLENTON, WISCONSIN 53002
[phone]
www.castnaturalstone.com
EVALUATION SUBJECT:
CAST NATURAL STONE
1.0 EVALUATION SCOPE
1.1 Compliance with the following codes:
 2012 International Building Code
®
(2012 IBC)
 2012 International Residential Code
®
(2012 IRC)
 Other Codes (see Section 8.0)
Properties evaluated:
Veneer strength and durability
1.2 Evaluation to the following green code(s) and/or
standards:
 2013 California Green Building Standards Code
(CALGreen), Title 24, Part 11
 2012 and 2008 ICC 700 National Green Building
Standard™ (ICC 700-2012 and ICC 700-2008)
Attributes verified:
See Section 3.0
2.0 USES
Cast Natural Stone is used as an adhered, non-load-
bearing exterior veneer on non-fire-resistance-rated wood-
framed or light gage steel stud walls, and concrete or
masonry walls.
3.0 DESCRIPTION
Cast Natural Stone is a precast concrete products made to
resemble natural stone in color and in texture. The
concrete is composed of cement, aggregate, water,
admixtures and coloring. The veneer units are molded and
cured at the plant. The average saturated weight of the
installed veneer units does not exceed 15 pounds per
square foot (73.2 kg/m
2
). Recognized patterns of veneer
are listed in Table 1.
The attributes of the stone veneer have been verified as
conforming to the requirements of (i) 2013 CALGreen
Section A4.405.1.3 for prefinished building materials and
Section A5.406.1.2 for reduced maintenance; (ii) ICC 700-
2012 Section 602.1.6 for termite-resistant materials and
Sections 601.7, 11.601.7, and 12.1(A).601.7 for site-
applied finishing materials; and (iii) ICC 700-2008 Section
602.8 for termite-resistant materials and Section 601.7 for
site-applied finishing materials. Note that decisions on
compliance for those areas rest with the user of this report.
The user is advised of the project-specific provisions that
may be contingent upon meeting specific conditions, and
the verification of those conditions is outside the scope of
this report. These codes or standards often provide
supplemental information as guidance.
4.0 INSTALLATION
4.1 General:
Installation of Cast Natural Stone must comply with
this report, the manufacturer’s published installation
instructions, and the applicable code. The manufacturer’s
published installation instructions must be available at the
jobsite at all times during installation. The veneer has been
evaluated for application over backings of cement plaster.
4.2 Preparation of Backing:
Cement plaster backings may be applied over plywood,
OSB or gypsum sheathing, supported by wood or steel
studs; over open wood or steel studs; and over concrete or
masonry walls, when installed as described in Sections
4.2.1 and 4.2.2.
4.2.1 Installation over Studs: For exterior installations,
the cement plaster backing must be installed over a water-
resistive barrier complying with IBC Sections 1404.2 and
2510.6 or IRC Sections R703.2 and R703.6.3, as
applicable. Also, flashing must be installed as required by
IBC Sections 1405.4 and 1405.10.1.2 or IRC Sections
R703.8 and R703.12.2, as applicable, and weep screeds
must be installed at the bottom of the stone veneer. The
weep screeds must comply with, and be installed in
accordance with, IBC Section 1405.10.1.2 or IRC Section
R703.12.2, as applicable. In addition, the weep screeds
must have holes with a minimum diameter of
3
/
16
inch
(4.8 mm) spaced at a maximum of 33 inches (838 mm) on
center, as required by Section 6.1.6.2 of TMS 402/ACI
530/ASCE 5 , which is referenced in IBC Section 1405.10.
The veneer must be installed with the clearances required
by IBC Section 1405.10.1.3 or IRC Section R703.12.1, as
applicable.
Studs must be spaced no more than 16 inches (406 mm)
on center. Lath must be a 2.5 lb/yd
2
(1.4 kg/m
2
) diamond