Installation Instructions

ManualsBrandsMODULO ManualsBuilding materialsModulo® Sienna Desert Manufactured Stone Veneer (5.38 sq ft)

STONE INSTALLATION INSTRUCTIONS

INS

LLING FINISHING TOU

CHES

HEARTHSTONE INSTALLATION INSTRUCTIONS

Note: Hearthstones are not recommended or warranted for exterior use or as a surface

area subject to foot traffic. Consult Surface Preparation Table 1 (page 2) for

requirements prior to installing hearthstones.

Place Mortar

Place mortar ⁄" deep in 3" wide strips 1" apart on prepared surface (Fig. 7).

Install Hearthstones

Place the first hearthstone onto the mortar bed and level (Fig. 8). Place adjacent

hearthstones, aligning and leveling with the first piece. If joints need additional

mortar, fill joints using a grout bag. Tool and finish joints following previous

instructions under Grouting & Finishing Joints (page 7). Ensure hearthstones are set

in a complete bed of mortar.

Note: Modulo Stone manufactured stone veneer and hearth products are made from

non-combustible materials. Mortar joints must not exceed ⁄" in width and the mortar

must be even with the top of the hearth surface.

RAISED HEARTH

Do not cantilever or extend Hearthstones more than 1⁄" beyond direct support. When grouting the extended portion of

a cantilevered hearthstone, bring the grout to the front edge. Push a long galvanized nail horizontally into the grout to

add support, then cover the nail with mortar.

SEALING FIREPLACES / HEARTHS

If desired, sealing the Modulo Stone facing or hearth of a fireplace installation will assist in the removal of smoke and

soot stains should they occur.

WATERTABLE / SILL INSTALLATIONS

Watertables/sills provide a transition piece between a stone wainscot and other exterior finishes and for water runoff. They

can also be used as a windowsill. Install using galvanized metal support brackets (Simpson Strong Tie A-21 or other

galvanized right angle bracket with holding capacity minimum 5 lbs/LF) fastened with galvanized nails or screws penetrating

studs 1" at a minimum of 16" on center. Two brackets per sill is preferred if blocking is present. Use construction adhesive to

bond stone at bracket locations. Caulk and flash as required at watertable/ sill locations using an approved corrosion-

resistive flashing that extends to the surface of exterior wall finish and is installed to prevent water from re-entering the

exterior wall envelope.

Windowsill Cross Section Wainscot Cross Section

FIG. 7

PLACE MORTAR FOR

HEARTHSTONE INSTALLATION

FIG. 8

PLACE HEARTHSTONE

Caulk/Flashing

as Required*

Galvanized Wood

Screw

Watertable/Sill Stone

Construction

Adhesive (Bracket

Locations Only)

Galvanized Metal

Brack et, Holding

Capacity 5 lbs/LF

Mortar Se tting Bed

Lath

Modulo Stone

Product

Water-Resistive

Barrier

Lath

Interior Finish per

Schedule

2 × 4 Stud Wall

(Insulated)

Sheathing