HardiePlank Lap Siding Installation Manual

HardiePlank® Lap Siding

EFFECTIVE SEPTEMBER 2019

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)

CUTTING INSTRUCTIONS

STORAGE & HANDLING:

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

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

saw) and a HardieBlade saw blade.

saw blade

product.

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.

IMPORTANT: To prevent damage to the drip edge, extra care should be taken when removing planks from the pallet, while handling, and when installing with a lap gauge. Please see additional handling requirements on page 4.

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

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

saw blades.

GENERAL REQUIREMENTS:

• HardiePlank® lap siding can be installed over braced wood or steel studs, 20 gauge (33 mils) minimum to 16 gauge (54 mils) maximum, spaced a maximum of 24 in o.c. or directly to minimum 7/16 in thick OSB sheathing. See General Fastening Requirements. Irregularities in framing and sheathing can mirror through the ﬁnished application. Correct irregularities before installing siding.

• Information on installing James Hardie products over non-nailable substrates (ex: gypsum, foam,etc.) can be located in JH Tech Bulletin 19 at www.jamehardie.com

• A water-resistive barrier is required in accordance with local building code requirements. The water-resistive barrier must be appropriately installed with penetration and junction ﬂashing in accordance with local building code requirements. James Hardie will assume no responsibility for water inﬁltration. James Hardie does manufacture HardieWrap® Weather Barrier, a non-woven non-perforated housewrap¹, which complies with building code requirements.

• Adjacent ﬁnished grade must slope away from the building in accordance with local building codes - typically a minimum of 6 in. in the ﬁrst 10 ft..

• Do not use HardiePlank lap siding in Fascia or Trim applications.

• Do not install James Hardie products, such that they may remain in contact with standing water.

• HardiePlank lap siding may be installed on ﬂat vertical wall applications only.

• For larger projects, including commercial and multi-family projects, where the span of the wall is signiﬁcant in length, the designer and/or architect should take into consideration the coefﬁcient of thermal expansion and moisture movement of the product in their design. These values can be found in the Technical Bulletin “Expansion Characteristics of James Hardie® Siding Products” at www.jameshardie.com.

• James Hardie Building Products provides installation /wind load information for buildings with a maximum mean roof height of 85 feet. For information on installations above 60 feet, please contact JH technical support.

INSTALLATION:

JOINT TREATMENT

One or more of the following joint treatment options are required by code (as referenced 2009 IRC R703.10.2) A. Joint Flashing (James Hardie recommended) B. Caulking* (Caulking is not recommended

for ColorPlus for aesthetic reasons as the Caulking and ColorPlus will weather differently. For the same reason, do not caulk nail heads on ColorPlus products.)

joint

ﬂashing

water-

resistive

barrier

stud

Figure 2

Nail line (If nail line is not present, place fastener between 3/4 in. & 1 in. from top of plank)

Nail 3/8 in. from edge of plank

Install planks in moderate contact at butt joints

Leave appropriate gap between planks and trim, then caulk.*

C. “H” jointer cover

Double Wall

Construction

water-resistive

barrier

plywood or

OSB sheathing

Figure 1

Single Wall

Construction

24 in. o.c. max.

fastener

Install a 1 1/4 in. starter strip to

ensure a consistent plank angle

let-in bracing

water-resistive

barrier

Note: Field painting over caulking may produce a sheen difference when compared to the ﬁeld painted PrimePlus. *Refer to Caulking section in these instructions. ¹For additional information on HardieWrap® Weather Barrier, consult James Hardie at 1-866-4Hardie or www.hardiewrap.com

SELECT CEDARMILL© | SMOOTH | BEADED CEDARMILL© | BEADED SMOOTH

Visit jameshardiepros.com for the most recent version.

HS11117 P1/4 09/19

CLEARANCE AND FLASHING REQUIREMENTS

HardiePlank® Lap Siding

Figure 3

Roof to Wall

Figure 7

Deck to Wall

Z-Flashing

Figure 12

Drip Edge

Min. 2 in.

Figure 4

Horizontal Flashing

Z-Flashing

Figure 8

Ground to Siding

Figure 13

Block Penetration

6 in.

Min. ¼ in. Do not caulk

Figure 9

Gutter to Siding

Figure 5

Kickout Flashing

1in.

Figure 14

Valley/Shingle Extension

As required by IRC code

min 4 in. x 4 in.

Figure 10

Sheltered Areas

Z-Flashing

Min. ½ in.

Figure 6

Slabs, Path, Steps to Siding

Min. 2 in.

Figure 11

Mortar/Masonry

L-Flashing

Z-Flashing

Min. ¼ in.

Z-Flashing

Min. ¼ in. Do not caulk

FASTENER REQUIREMENTS*

Refer to the applicable ESR report online to determine which fastener meets your wind load design criteria.

Blind Nailing is the preferred method of installation for HardiePlank be used in conjunction with Blind nailing (Please see JH Tech bulletin 17 for exemption when doing a repair).

BLIND NAILING

Nails - Wood Framing

• Siding nail (0.09 in. shank x 0.221 in. HD x 2 in. long)

• 11ga. rooﬁng nail (0.121 in. shank x 0.371 in. HD x 1.25 in. long)

Screws - Steel Framing

• Ribbed Wafer-head or equivalent (No. 8 x 1 1/4 in. long x 0.375 in. HD) Screws must penetrate 3 threads into metal framing.

Nails - Steel Framing

• ET & F Panelfast Nails must penetrate minimum 1/4 in. into metal framing.

OSB minimum 7/16 in.

• Siding nail (0.09 in. shank x 0.215 in. HD x 1-1/2 in. long

• Ribbed Wafer-head or equivalent (No. 8 x 1 5/8 in. long x 0.375 in. HD).

nails or equivalent (0.10 in. shank x 0.313 in. HD x 1-1/2 in. long)

lap siding products. Face nailing should only be used where required by code for high wind areas and must not

FACE NAILING

Nails - Wood Framing

• 6d (0.113 in. shank x 0.267 in. HD x 2 in. long)

• Siding nail (0.09” shank x 0.221” HD x 2” long)

Screws - Steel Framing

• Ribbed Bugle-head or equivalent (No. 8-18 x 1-5/8 in. long x

0.323 in. HD) Screws must penetrate 3 threads into metal framing.

Nails - Steel Framing

• ET & F pin or equivalent (0.10 in. shank x 0.25 in. HD x 1-1/2 in. long) Nails must penetrate minimum 1/4 in. into metal framing.

OSB minimum 7/16 in.

• Siding nail (0.09 in. shank x 0.221 in. HD x 1-1/2 in. long)

Extend shingles at least 1 in. out from the fascia when gutters are present

*Also see General Fastening Requirements; and when considering alternative fastening options refer to James Hardie's Technical Bulletin USTB 5 - Fastening Tips for HardiePlank Lap Siding.

HS11117 P2/4 09/19

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