Installation Instructions

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CORNER CONSTRUCTION
Water resistive barrier & lath must continuously
wrap a minimum of 16" at outside and inside
corners and fasten at a framing member. In
sequence: (1) wall substrate, (2) two layers of
water resistive barrier, (3) metal lath
Interior Gypsum Board
Batt Insulation
Wood Framing
Exterior Grade Sheathing
2 Layers Of WRB
Lath
Lath Fasteners–Type &
Spacing per ASTM C1063
Mortar Scratch Coat
Mortar Setting Bed
Manufactured
Stone Veneer
Mortar Joint
WRB Lapped Over
Weep Screed
Weep Screed
STEP TWO:
WALL SURFACE PREPARATION
EXTERIOR APPLICATIONS
Make sure that the application of Modulo Stone products and the structure they are being applied to incorporate good
building practices. Corrosion-resistant flashing shall be installed at all wall penetrations. Flashing type and locations shall be
in accordance with the requirements of the applicable building code. On exterior applications, the incorrect installation or
absence of flashing, cant strips, gutters, kick out flashing and downspouts may result in diversion of water run-off onto
finished surface areas. Masonry and other building products subjected to these conditions may develop staining and, when
combined with severe freeze-thaw conditions, may eventually cause damage. The application of Modulo Stone products
under these conditions is not recommended.
Flashing
1. To maintain the weather-resistance of the exterior wall on which stone products are installed, corrosion-
resistant flashing/weep screed and a means of drainage shall be installed at all penetrations and terminations of
the stone cladding. Flashing type and locations shall be in accordance with the requirements of the applicable
building code.
2. For additional recommendations regarding flashing, refer to the following trade associations, standards,
organizations and resources:
a. Masonry Veneer Manufacturers Association (MVMA) installation guide for adhered concrete masonry
veneer, available at www.masonryveneer.org
b. Architect or engineer
c. ASTM E 2112
d. Asphalt Roofing Manufacturers Association (ARMA)
e. Brick Institute of America (BIA)
f. The American Plywood Association (APA)
g. Local building department
h. Consult window manufacturer warranty as a perimeter soft joint/gap may be required
Clearance
Maintain a 4" clearance between Modulo Stone and grade or 2" clearance above a paved surface. Most building
codes require the use of a weep screed in framed applications. In framed applications, this distance is measured
from the “beak” of the weep screed. When a weep screed is not required—application over masonry as an example
—a 2" × 4" leveling/ledger board may be used as a temporary level straight edge to start your installation. See the
MVMA Installation Guide for conditions that allow a reduction in clearance requirements.
WATER RESISTIVE BARRIER (WRB) INSTALLATION
Where a WRB is required, it should be installed as two separate layers, in shingle fashion. Fasteners, fastening schedule,
vertical and horizontal lap requirements should follow the manufacturer’s installation instructions. The
WRB layers must be
continuous through inside and outside corners, typically extending 16" to the next framing member. See Material Selection
(page 4) for specific WRB material requirements. Example for building paper: 2" horizontal lap, 6" vertical lap.