Technical Specifications

ManualsBrandsCast Natural Stone ManualsBuilding materialsCast Natural Manufactured Stone Veneer (100 Sq. Ft.) Green Lake Weatheredge

ESR-3566

Most Widely Accepted and Trusted Page 2 of 3

mesh metal lath conforming to ASTM C847; a 3.4 lb/yd

(1.8 kg/m

inch thick ribbed lath conforming to ASTM

C847; or a 1.4 lb/yd

(0.760 kg/m

) galvanized woven wire

mesh conforming to ASTM C1032. Lath may be self-furred

or non-furred, provided furring or furring fasteners are

used. When the cement plaster backing is installed over

open studs, a paper back lath must be used. All lath

must be installed over the water-resistive barriers by

following lath manufacturer's installation guidelines and

recommendations. Lath or mesh must be fastened to each

of the wall studs as required by ASTM C1063 and IRC

section R703.6.1. Fasteners must be spaced a maximum

of 6 inches (153 mm) on center.

For attaching lath to wood studs, fasteners must be

galvanized nails having a minimum shank diameter of

0.120-inch, a minimum head diameter of

-inch

(11.1 mm) and sufficient length to penetrate the studs a

minimum of

-inch (19.1 mm). Wood studs must have a

minimum specific gravity of 0.42. For attaching lath to steel

studs, fasteners must be a minimum of #8 corrosion

resistant self-drilling, tapping screws complying with ASTM

C954 and having sufficient length to protrude a minimum of

inch (9.5 mm) through the stud. Steel studs must be a

minimum of 33 mils thick.

A scratch coat of Type S mortar (cement plaster)

complying with ASTM C926 must be applied over the lath

to a thickness of

inch to

inch (12.7 to 19.1 mm). The

scratch coat must be scored horizontally in accordance

with the manufacturer’s published installation instructions,

and must be allowed to cure in accordance with IBC

Section 2512.6, prior to the application of the veneer units.

4.2.2 Installation over Concrete and Masonry: The

veneer units may be applied over a concrete or masonry

backing, provided lath and a cement plaster scratch coat

are used. The lath must be corrosion-resistant metal lath

complying with ASTM C847, or 1.4 lb/yd

(0.760 kg/m

corrosion-resistant, woven wire plaster base complying

with ASTM C1032. The lath must be fastened to the wall in

accordance with Section 7.10 of ASTM C1063, and IRC

Section R703.6.1, as applicable. The fasteners must be

spaced a maximum of 6 inches (152 mm) on center

vertically and 16 inches (406 mm) on center horizontally.

The gravity load (shear) capacity and negative wind load

(pull-out) capacity of the proprietary fasteners must be

justified to the satisfaction of the code official. The scratch

coat must be applied as described in Section 4.2.1.

4.3 Application of Veneer Units:

Prior to the application of the veneer units, the scratch coat

or other backing and the back of the veneer units must be

moistened in accordance with the manufacturer’s

instructions. A minimum

-inch-thick (12.7 mm) setting

bed of Type S mortar must be applied to the back of the

veneer units, and the veneer units must be pressed firmly

in place, squeezing the mortar out around all veneer unit

edges. For grouted patterns, joints between veneer units

must be grouted and tooled in accordance with the veneer

manufacturer’s published installation instructions.

5.0 CONDITIONS OF USE

The precast stone veneer described in this report complies

with, or is a suitable alternative to what is specified in,

those codes listed in Section 1.0 of this report, subject to

the following conditions:

5.1 Installation must comply with this report, the

manufacturer’s published installation instructions and

the applicable code. In the event of a conflict between

the manufacturer’s published installation instructions

and this report, this report governs.

5.2 The use of the precast stone veneer has been

evaluated for installation on walls with cement plaster.

5.3 Expansion or control joints, used to limit the effect of

differential movement of supports on the veneer

system, are to be specified by the architect, designer

or veneer manufacturer, in that order. Consideration

must also be given to movement caused by

temperature change, shrinkage, creep and deflection.

5.4 In jurisdictions adopting the IBC, the supporting wall

must be designed to support the installed weight of

the veneer system, including veneer, setting bed and

cement plaster backing, as applicable. At wall

openings, the supporting members must be designed

to limit deflection to

600

of the span of the supporting

members.

5.5 In jurisdictions adopting the IRC, where the seismic

provisions of IRC Section R301.2.2 apply, the

average weight of the wall supporting the precast

stone veneer, including the weight of the veneer

system, must be determined. When this weight

exceeds the applicable limits of IRC Section

R301.2.2.2.1, an engineered design of the wall

construction must be performed in accordance with

IRC Section R301.1.3.

6.0 EVIDENCE SUBMITTED

Data in accordance with the ICC-ES Acceptance Criteria

for Precast Stone Veneer (AC51), dated February 2008

(editorially revised April 2012).

7.0 IDENTIFICATION

Boxes of precast stone veneer units are identified with the

manufacturer’s name (Norse Building Products), the

product name (Cast Natural Stone); the pattern name, the

manufacturing date, and the evaluation report number

(ESR-3566).

8.0 OTHER CODES

8.1 Evaluation Scope:

In addition to the codes referenced in Section 1.0, the

products described in this report were evaluated for

compliance with the following codes:

 2009 International Building Code

(2009 IBC)

 2009 International Residential Code

(2009 IRC)

The Cast Natural Stone products described in this report

comply with, or are suitable alternatives to what is

specified in, the codes listed above, subject to the

provisions of Sections 8.2 through 8.7.

8.2 Uses:

See Section 2.0.

8.3 Description:

See Section 3.0.

8.4 Installation:

8.4.1 General: See Section 4.1.

8.4.2 Preparation of Backing: See Section 4.2

8.4.2.1 Installation over Sheathing or Open Studs:

Replace the 1

paragraph of Section 4.2.1 with the

following: For exterior installations, the cement plaster

backing must be installed over a water-resistive barrier

complying with 2009 IBC Sections 1404.2 and 2510.6 or

2009 IRC Sections R703.2 and R703.6.3, as applicable.

Also, flashing must be installed as required by 2009 IBC

Section 1405.4 or 2009 IRC Section R703.8, as applicable,