Installation Guide

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Do not use HardieTrim boards to replace any structural component.

HardieTrim

Boards

HardieTrim

Boards

HardiePlank

Lap Siding

HardieTrim

Crown Moulding

water-

resistive

barrier

Figure 1

EFFECTIVE SEPTEMBER 2019

HardieTrim

Boards

These instructions are to be used for HardieTrim

HZ10

Boards ONLY and are NOT VALID in the following states: AK, UT, ID, CO, WY, MT. These instructions are also NOT

valid in portions of WA, OR, CA, NV, AZ, NM. Enter your zip code at www.hardiezone.com to ﬁnd out what zone applies to your location.

GENERAL REQUIREMENTS

• Wood or steel must be provided for attaching HardieTrim boards.

• Follow all appicable codes when installing HardieTrim boards.

• DO NOT install HardieTrim boards, such that they may remain in contact with standing water.

TABLE OF CONTENTS

GENERAL REQUIREMENTS

FLASHING/CLEARANCE REQUIREMENTS

FASTENING

Face Nailing Requirements

INSTALLATION

Trimming Corners

Openings

Band Boards

Frieze

Batten Boards

Fascia

HardieTrim

™

Tabs

FINISHING

Page 1

Page 2

Page 3

Page 4-8

Page 4

Page 5

Page 6

Page 7-8

Page 9

Visit jameshardiepros.com for the most recent version.

TR1502_P1/9 09/19

HardieTrim

boards are decorative non-load bearing trim products.

IMPORTANT: FAILURE TO FOLLOW JAMES HARDIE WRITTEN INSTALLATION INSTRUCTIONS AND COMPLY WITH APPLICABLE BUILDING CODES MAY VIOLATE LOCAL LAWS, AFFECT

BUILDING ENVELOPE PERFORMANCE AND MAY AFFECT WARRANTY COVERAGE. FAILURE TO COMPLY WITH ALL HEALTH AND SAFETY REGULATIONS WHEN CUTTING AND INSTALLING THIS

PRODUCT MAY RESULT IN PERSONAL INJURY. BEFORE INSTALLATION, CONFIRM YOU ARE USING THE CORRECT HARDIEZONE® PRODUCT INSTRUCTIONS BY VISITING HARDIEZONE.COM

OR CALL 1-866-942-7343 (866-9-HARDIE)

Store ﬂat and keep dry and covered prior to

installation. Installing siding wet or saturated may

result in shrinkage at butt joints. Carry planks on

edge. Protect edges and corners from breakage.

James Hardie is not responsible for damage caused

by improper storage and

handling of the

product.

OUTDOORS

1. Position cutting station so that airﬂow blows dust away from the

user and others near the cutting area.

2. Cut using one of the following methods:

a. Best: Circular saw equipped with a HardieBlade

saw blade

and attached vacuum dust collection system. Shears

(manual, pneumatic or electric) may also be used, not

recommended for products thicker than 7/16 in.

b. Better: Circular saw equipped with a dust collection feature

(e.g. Roan

saw) and a HardieBlade saw blade.

c. Good: Circular saw equipped with a HardieBlade saw blade.

INDOORS

DO NOT grind or cut with a power saw indoors. Cut using shears (manual, pneumatic or

electric) or the score and snap method, not recommended for products thicker than 7/16 in.

- DO NOT dry sweep dust; use wet dust suppression or vacuum to collect dust.

- For maximum dust reduction, James Hardie recommends using the “Best” cutting

practices. Always follow the equipment manufacturer’s instructions for proper operation.

- For best performance when cutting with a circular saw, James Hardie recommends

using HardieBlade

saw blades.

- Go to jameshardiepros.com for additional cutting and dust control recommendations.

CUTTING INSTRUCTIONS

STORAGE & HANDLING:

IMPORTANT: The Occupational Safety and Health Administration (OSHA) regulates workplace exposure to silica dust. For construction sites, OSHA has deemed

that cutting ﬁber cement with a circular saw having a blade diameter less than 8 inches and connected to a commercially available dust collection system per

manufacturer’s instructions results in exposures below the OSHA Permissible Exposure Limit (PEL) for respirable crystalline silica, without the need for additional

respiratory protection.

If you are unsure about how to comply with OSHA silica dust regulations, consult a qualiﬁed industrial hygienist or safety professional, or contact your James

Hardie technical sales representative for assistance. James Hardie makes no representation or warranty that adopting a particular cutting practice will assure

your compliance with OSHA rules or other applicable laws and safety requirements.

Summary of content (9 pages)

PAGE 1
HardieTrim Boards ® EFFECTIVE SEPTEMBER 2019 These instructions are to be used for HardieTrim® HZ10® Boards ONLY and are NOT VALID in the following states: AK, UT, ID, CO, WY, MT. These instructions are also NOT valid in portions of WA, OR, CA, NV, AZ, NM. Enter your zip code at www.hardiezone.com to find out what zone applies to your location.
PAGE 2
HardieTrim® Boards FLASHING/CLEARANCE REQUIREMENTS NO-COVER HardieTrim may be installed with a minimum 1/4 in. clearance when installed vertically to grade, decks, paths, steps, and driveways Figure 2 Maintain a minimum 1 in. horizontal clearance between James Hardie trim products and decks, paths, steps and driveways. At the juncture of the roof and vertical surfaces, flashing and counter flashing shall be installed per the roofing manufacturer’s instructions. Provide a 1 in.
PAGE 3
HardieTrim® Boards GENERAL FASTENING REQUIREMENTS Fasteners must be corrosion resistant, galvanized, or stainless steel. Electro-galvanized are acceptable but may exhibit premature corrosion. James Hardie recommends the use of quality, hot-dipped galvanized nails. James Hardie is not responsible for the corrosion resistance of fasteners. Stainless steel fasteners are recommended when installing James Hardie products near the ocean, large bodies of water, or in very humid climates.
PAGE 4
HardieTrim® Boards INSTALLATION TRIMMING CORNERS TRIM APPLICATION FOR WINDOWS, DOORS & OTHER OPENINGS When installing corners or other vertical trim, position boards on the wall and attach (figure 12). Flashing over trim is required per code for all installation methods. (figure 14) Figure 14 Pre-Built Corners Alternatively, corners can be pre-built off the wall using 2 in. finishing nails. Each side of the pre-built corner must be secured to the wall (figure 13).
PAGE 5
HardieTrim® Boards BATTEN BOARDS Figure 17 HORIZONTAL PANEL JOINTS At horizontal panel joints HardieTrim battens must be installed according to option 1 or 2 below. When installing HardieTrim Battens horizontally, they must be installed as a panel joint according to option 2. Option 1 Figure 17 - No horizontal band board - Make a 22.5 - 45 degree weather cut, in the HardieTrim batten, just above the 1/4 in. clearance between panels.
PAGE 6
HardieTrim® Boards FASCIA Do not use HardieTrim to replace any structural component HardieTrim boards can be fastened directly over a 2x sub-fascia or directly to rather tails. Check local building code for relevant codes. Option 1 Over sub-fascia: (figure 19) When installing HardieTrim boards over solid 2x sub-fascia use minimum 2 in., 16 gauge corrosion resistant finish nails.
PAGE 7
HardieTrim® Boards HARDIETRIM® TABS FASTENER REQUIREMENTS For Corners, Band Boards, Windows, and Door Applications: HardieTrim boards may be installed with HardieTrim™ Flat Tabs and HardieTrim™ Corner Tabs which provide concealed fastening. Only HardieTrim Flat and Corner Tabs can be used with HardieTrim boards to create a concealed fastening. Step 1: Attach HardieTrim Flat Tabs to the back side of the trim using four, 18 ga. 1/2 in. L x 1/4 in.
PAGE 8
HardieTrim® Boards TRIMMING CORNERS When using HardieTrim tabs prebuild outside corners off the wall. • Attach HardieTrim Corner Tabs to the back side of the trim using eight(8) - 18 ga. 1/2 in. L x 1/4 in. W narrow crown corrosion resistant staples using a pneumatic stapler. Ensure the HardieTrim Corner Tabs are fastened tight and straight to the trim boards. (figure 25) • For wood frame construction, attach trim to building using min.
PAGE 9
HardieTrim® Boards FINISHING CUT EDGE TREATMENT Caulk, paint or prime all field cut edges. James Hardie touch-up kits are required to touch-up ColorPlus products. CAULKING For best results use an Elastomeric Joint Sealant complying with ASTM C920 Grade NS, Class 25 or higher or a Latex Joint Sealant complying with ASTM C834. Caulking/Sealant must be applied in accordance with the caulking/sealant manufacturer’s written instructions. Note: some caulking manufacturers do not allow "tooling".