Installation Guide

9 | English
BASIC COMPOSITION
BASIC COMPOSITION
90% Portland cement and sand with selected additives. Contains no asbestos,
formaldehyde, gypsum, paper facing, or abrasive aggregate.
HardieBacker
®
Cement Board with HydroDefense
™
Technology:
Sheet sizes: 3 ft. x 5 ft.
Thickness: 0.42 in.
Weight: 2.6 lb / sq. ft. (12.7 kg/m2)
MATERIALS REQUIRED
MATERIALS REQUIRED
1 | Mortar
For floors:
• Tile Bonding Mortar – Modified Dry-set Cement Mortar complying with ANSI
A118.4.
• Bedding Mortar (for use as a supporting bed of mortar between the subfloor
and cement board only) – Dry-set Cement Mortar complying with ANSI
A118.1 or Modified Dry-set Cement Mortar complying with ANSI A118.4.
For countertops:
• Tile Bonding Mortar – Modified Dry-set Cement Mortar complying with ANSI
A118.4.
• Bedding Mortar (for use as a supporting bed of mortar between the subbase
and cement board only) – Dry-set Cement Mortar complying with ANSI
A118.1 or Modified Dry-set Cement Mortar complying with ANSI A118.4.
• For Exterior applications, follow stone and mortar manufacturer’s
recommendations.
For walls:
• Tile Bonding Mortar – Modified Dry-set Cement Mortar complying with ANSI
A118.4.
• Tile Bonding Adhesive – Type 1 Organic Adhesive (mastic) complying with
ANSI A136.1 (Not to be used in exterior applications or interior wet areas).
• For Exterior applications, follow stone and mortar manufacturer’s
recommendations.
2 | Tape
• Minimum 2 in. wide high-strength alkali-resistant glass fiber tape.
3 | Sealant
• Flexible mildew resistant 100% silicone sealant complying with ASTM
C920 (for stone - check with stone supplier for compatible sealant
recommendations).
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4 | Fasteners
Finish Framing Fastener
Fastener
Spacing
Tile
Finish
Interior Wall:
Wood Framing
Minimum 1-1/4 in. long corrosion-resistant
roofing nails
1
8 in. on center along all supports
Minimum 1-1/4 in. long No. 8 by 0.375
in. head diameter, self-drilling, corrosion
resistant, ribbed wafer head screws
2
Exterior Wall:
Wood Framing
Minimum 1-3/4 in. long corrosion-resistant
roofing nails
Minimum 1-1/4 in. long No. 8 by 0.375
in. head diameter, self-drilling, corrosion
resistant, ribbed wafer head screws
Paint
or wall
paper
finish
Interior Wall:
Wood framing
Minimum 1-3/8 in. long gypsum board nails
Minimum 1-1/4 in. long No. 8 by 0.323
in. head diameter, self-drilling, corrosion
resistant, ribbed bugle head screws
Tile
Finish
Interior Wall:
Steel framing
Minimum 1-1/4 in. long No. 8 by 0.375
in. head diameter, self-drilling, corrosion
resistant, ribbed wafer head screws
3
Exterior Wall:
Steel framing
Minimum 1-1/4 in. long No. 8 by 0.375
in. head diameter, self-drilling, corrosion
resistant, ribbed wafer head screws
Paint
or Wall
paper
finish
Interior Wall:
Steel framing
Minimum 1 in. long No. 8 by 0.323 in. head
diameter, self-drilling, corrosion resistant,
ribbed bugle head screws
Tile
Finish
Interior Floor:
Wood subfloor
Minimum 1-1/4 in. long corrosion-resistant
roofing nails
Minimum 1 in. long No. 8 by 0.323 in. head
diameter, self-drilling, corrosion resistant,
ribbed bugle head screws
For compliance to ANSI A108.11 use
minimum 1-1/4 in. long No. 8 by 0.375
in. head diameter, self-drilling, corrosion
resistant, ribbed wafer head screws
Tile
Finish
Interior/Exterior
Countertop:
Wood subbase
Minimum 1-1/4 in. long corrosion-resistant
roofing nails
Minimum 1-1/4 in. long No. 8 by 0.375
in. head diameter, self-drilling, corrosion
resistant, ribbed wafer head screws
Minimum 1-1/4 in. long No. 8 by 0.323
in. head diameter, self-drilling, corrosion
resistant, ribbed bugle head screws
18 gauge corrosion resistant polymer
coated 1 in. staples with 1/4 in. crown
(change to ¾ in. or 1 in. crown)
1
For compliance to ANSI A108.11, nails into wood framing must be of sufficient length
to penetrate at least 3/4 inch into wood members.
2
For compliance to ANSI A108.11, screws into wood framing must be of sufficient length
to provide at least 3/4 inch of thread engagement.
3
For compliance to ANSI A108.11, screws into steel framing must be of sufficient length to
penetrate the metal framing at least three full threads or 1/4 inch of thread engagement.
11 | English
ENVIRONMENTAL CONSIDERATIONS
ENVIRONMENTAL CONSIDERATIONS
HardieBacker
®
Cement Board with HydroDefense
™
Technology employs a
proprietary cement formulation that provides a waterproof wallboard and tile
backer substrate that stands tough over time, reducing the need for product
replacement. James Hardie is committed to reducing energy consumption, while
improving process efficiencies and waste management. The Company avoids the
use of environmentally damaging materials and uses renewable resources in the
manufacture of its products. HardieBacker
®
Cement Board with HydroDefense
™
Technology does not contain any glass fibers, gypsum, asbestos or formaldehyde.
James Hardie also focuses on water conservation and attempts to recycle water
and waste product as much as possible during the manufacturing process.
RECOGNITIONS
RECOGNITIONS
HardieBacker
®
Cement Board with HydroDefense
™
Technology is recognized as an
interior substrate by complying with the following standards:
• ASTM C1288 Grade II • ASTM C1325
• ANSI A118.9 • ANSI A118.10 Section 4.5
• UL Environment GREENGUARD Gold Certified – product certified for low chemical
emission UL2818, complies with the State of California’s Department of Public
Health Services Standard Practice for Specification Section 01350 (California
Section 01350) for testing chemical emissions from building products used in
schools and other environments.
Code References:
• IBC 2509.2 • IRC R702.4.2
Consult these documents for additional information concerning conditions for use in applicable jurisdictions.
Cementitious Backer Unit/Fiber-Cement Underlayment Compressive Strength Compressive Strength at
Equilibrium Moisture Content (ASTM D2394) HardieBacker
®
Cement Board with HydroDefense
™
Technology:
6500 psi (45 MPa).
Non-Combustibility HardieBacker cement board is recognized as non-combustible in accordance with ASTM
E136.
Surface Burning Characteristics When tested in accordance with ASTM method E-84: Flame Spread – 0, Fuel
Contributed – 0, Smoke Developed – 5. Fire Rated Assemblies, HardieBacker cement board may be used as a
component in one-hour fire-resistive wall construction; consult the Intertek Directory of Building Products or
James Hardie’s Technical Services at 1-800-9HARDIE (1-800-942-7343) for recognized assemblies.
HARDIEBACKER WARRANTIES
HARDIEBACKER WARRANTIES
INTERIOR APPLICATIONS
The HardieBacker
®
Cement Board with HydroDefense
™
Technology comes with a limited lifetime warranty.
Download a copy from www.hardiebacker.com or obtain one from wherever James Hardie products are sold.
EXTERIOR APPLICATIONS
James Hardie offers a limited 10 year warranty for HardieBacker
®
Cement Board with HydroDefense
™
Technology installed in exterior applications in HardieZone HZ10 regions only. To find out the HardieZone
designation for your ZIP code, go to www.HardieZone.com.
Spec ID: 39748
* Some application areas may require additional waterproofing. Refer to local building code requirements.