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HardiePlank™ Lap Siding

HardiePanel™ Vertical Siding

HardieBacker™ 1/4''

HardieBacker™ 1/2''

HardieWrap™ weather barrier

HardieWrap™ flashing

HardieFloor™ Wet Area Solution



HardiePlank™ Lap Siding



Q. Where can I buy HardiePlank™ lap siding?

A: Use the online James Hardie preferred dealer locator or call customer service at 1-888-JHARDIE for your closest sales representative.

Q. How much does HardiePlank™ siding cost?

A: Call customer service at 1-888-JHARDIE for your closest sales representative.

Q. How do your prices compare to the prices of brick and vinyl?

A: While prices vary from market to market, this is how HardiePlank™ siding compares in installed price with its competitors:
  • More expensive than Vinyl
  • Less expensive than Brick
  • Equal or less than Hardboard Siding
  • Less expensive than Synthetic Stucco
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Q. Do I have to paint HardiePlank™ siding?

A: Yes, HardiePlank™ lap siding must be painted or you may order many James Hardie® products with ColorPlus® Technology. If painting, 100% acrylic topcoats are recommended. Do not paint when wet. For specific recommendations, please refer to JH Technical Bulletin No. S-100 or refer to paint manufacturers specifications. Back rolling is recommended if the siding is sprayed. Within 180 days for primed product and 90 days for unprimed.

Q. Why is Silica important to You?

A: Silica (SiO²) comprises approximately 75% of the earth's crust and is a common ingredient in most products used in the tile and masonry industry, including cement-based underlayment materials such as HardieBacker® cement board. In an intact state, these products do not pose a silica risk. However, when cut, drilled, or abraded during installation, the resulting smaller, silica-containing dust can pose a potential health hazard as inhalation of excessive quantities over an extended duration can cause silicosis, lung-cancer, or other lung-related diseases, potentially leading to death.

To protect workers from potential health effects, OSHA established and enforces a permissible exposure limit (PEL) for respirable silica of 0.100 µg/m³. This PEL is an 8-hour time weighted average and requires the use of special industrial hygiene equipment to measure. Any exposures above this level will mandate the installer to take additional protective measures, potentially including a documented respirator program and medical monitoring.

As safety is paramount, James Hardie always encourages you to take every effort possible to minimize any dust exposure levels. In any situation, properly-fitted NIOSH approved respirators (e.g. N95) can be used in conjunction with the following tools and cutting methods to further limit silica dust exposures, providing a safer workplace.

If additional concern regarding dust exposure levels (or exceeding OSHA´s PEL) exists or the conditions of your jobsite do not allow you to conform to any of the following practices, please contact James Hardie at 1-888-JHARDIE or consult a qualified industrial hygienist. A directory of independent IH consultants can be found at www.aiha.org.

IMPORTANT NOTE: Prior to using any James Hardie® products, all users must read all applicable warnings (including MSDS) and comply with all installation instructions. Failure to do so may result in serious personal injury.

WARNING:  AVOID BREATHING SILICA DUST

James Hardie® products contain respirable crystalline silica, which is known to the State of California to cause cancer and is considered by IARC and NIOSH to be a cause of cancer from some occupational sources. Breathing excessive amounts of respirable silica dust can also cause a disabling and potentially fatal lung disease called silicosis, and has been linked with other diseases. Some studies suggest smoking may increase these risks. During installation or handling: (1) work in outdoor areas with ample ventilation; (2) use fiber cement shears for cutting or, where not feasible, use a HardieBlade™ saw blade and dust-reducing circular saw attached to a HEPA vacuum; (3) warn others in the immediate area; (4) wear a properly-fitted, NIOSH-approved dust mask or respirator (e.g. N-95) in accordance with applicable government regulations and manufacturer instructions to further limit respirable silica exposures. During clean-up, use HEPA vacuums or wet cleanup methods - never dry sweep. For further information, refer to our installation instructions and Material Safety Data Sheet available at www.jameshardie.com or by calling 1-800-9HARDIE (1-800-942-7343). FAILURE TO ADHERE TO OUR WARNINGS, MSDS, AND INSTALLATION INSTRUCTIONS MAY LEAD TO SERIOUS PERSONAL INJURY OR DEATH.

James Hardie Building Products
26300 La Alameda, Suite 250
Mission Viejo, CA 92691

SD050905


Q. How do I cut HardiePlank™ siding? How can I control the dust?

A: To help you have a safer jobsite, James Hardie has developed the following "tiered" system to help you select the best tools and methods for your given job requirements. This system has been based around exposure testing in what James Hardie believes to be real-world conditions to ensure that you can have a safe jobsite. Note: For maximum protection (lowest respirable dust exposures), James Hardie always recommends using "Best"-level cutting methods where feasible. If you do not adhere to the recommended cutting instructions, please contact James Hardie or consult with a qualified industrial hygienist.

TOOL RATING CATEGORY

CUTTING METHOD

CUTTING RATE¹

VENTILATION

BEST

HANDHELD SHEARS PLATFORM SHEARS SCORE AND SNAP

NO LIMITATIONS

INDOOR / OUTDOOR

BETTER

DUST-REDUCING SAWS WITH HARDIEBLADE™ SAW BLADE COUPLED WITH HEPA VACUUM EXTRACTION

NO LIMITATIONS

OUTDOOR

GOOD

DUST-REDUCING SAWS WITH HARDIEBLADE™ SAW BLADE

LOW TO MODERATE

OUTDOOR

¹Cutting rate is based on linear feet of material actually being cut

NEVER use high speed power tools (e.g. circular saws, grinders, etc) to cut James Hardie Products indoors as they may generate excessive respirable silica dust


Q. Is this an issue for James Hardie products only?

A: No. Many products in the building industry contain silica including fiber cement. Other products include bricks, concrete, tile, abrasives, grout, thin-set, glass, roofing tiles, gypsum wallboard, joint compound, stucco patch, mortar, and cementitious tile underlayments.

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Q. Does the silica in James Hardie products pose a danger after the product is installed?

A: No. The silica in James Hardie products does not pose any danger during handling or to the homeowner once the product is installed. Respirable silica only poses a potential hazard from James Hardie products during certain activities that create dust (e.g., cutting, grinding, drilling, sanding, or otherwise abrading) and only if excessive amounts of respirable silica are present in the user´s immediate breathing area. James Hardie products in their intact state do not emit dust.

Q. Should I ever use a high-speed power tool (such as a circular saw) indoors?

A: No. You should only use shears and the score-and-snap method indoors. If a power saw is needed, all cutting should be done outdoors in a well-ventilated area.

Q. There are many blades designed to cut fiber-cement on the market. Why is the HardieBlade™ saw blade better?

A: The HardieBlade™ saw blade has been designed specifically for James Hardie fiber cement. Testing to date appears to suggest that a saw blade designed with fewer teeth generally creates larger dust particles (greater than 10 microns in diameter), thereby reducing the amount of smaller, respirable dust generated and reducing the risk for high exposures of respirable silica. On the other side, testing also suggests that masonry-type blades (such as continuous or segmented diamond rim blades) and abrasive blades are designed differently and create more respirable dust. As a rule of thumb, less teeth equates to lower respirable silica exposures.

Q. If I choose to wear a respirator when cutting James Hardie products, what type of respirator is required to filter out the respirable silica particles most effectively?

A: Our best practices have been designed to help you reduce any hazard risk by utilizing techniques and tools that produce the lowest levels of respirable silica dust without requiring a respirator. However, if you decide to take additional protective measures and use respirators, we require that a NIOSH/MSHA approved respirator with a rating of N95 or better.

It is important to note that OSHA may require a formal respirator program be in place prior to respirator use. A program should include (but is not limited to) training, fit-testing, and medical monitoring. Please consult www.osha.gov to learn more about the requirements for properly implementing a respirator program.

Q. Do you require a water-resistive barrier behind HardiePlank™ siding?

A: James Hardie as well as the Model Building Codes (IBC, IRC, and UBC) require the use of a water-resistive barrier. It is good building practice.

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Q. Can I blind nail? When do I have to face nail? Can I use staples?

A: Yes, you can blind nail HardiePlank™ siding. This can be done up to 24" on center. Please consult NER-405 Report (Table 2) for complete details. Staples cannot be used.

Q. Do I have to butt the joints? Will water get through the gap? Do I have to caulk?

A: Please refer to our complete HardiePlank™ siding installation instructions.

Q. What types of trim can be used with HardiePlank™ siding?

A: The following are suitable trim products for use with HardiePlank™ siding:
  • Fiber Cement
  • Real Wood
  • Engineered Wood
  • Vinyl
  • Coated or Corrosion-Resistant Aluminum
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Q. What are the "K" and "R" values for HardiePlank™ siding?

A: ''K'' and ''R'' values are listed in the product brochure and the NER-405 Report (See Table 4).

Q. Can HardiePlank™ siding be applied to metal framing?

A: Yes, please refer to NER-405 Report (Tables 2 & 3) for product application details.

Q. How close to the ground can I install HardiePlank™ siding?

A: Model Building Codes (UBC, Standard, etc.) require that exterior sidings be installed with a minimum 6'' clearance of soil. This will allow for clearance when soil is back-filled against the foundation and footings.

Q. What type of weather-resistant barrier is required?

A: Any weather-resistant barrier complying with the Model Building Codes (UBC, Standard, etc.) is acceptable.

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HardiePanel™ Vertical Siding


Q. Can I use HardiePanel™ siding as skirting material on a mobile home?

A: Yes. However it needs to be installed in accordance with our written installation instructions for HardiePanel™ siding in regard to framing, joints, paint and installation above ground.

Q. Do I need to pre-drill?

A: No. HardiePanel™ siding is not required to be pre-drilled. It nails just as easily as traditional wood products.

Q. How much does it weigh?

A: 2.3 pounds per square foot.


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HardieBacker™ 1/4''


Q. Where do I purchase HardieBacker™ board?

A: Use the online James Hardie preferred dealer locator or call customer service at 1-888-JHARDIE for your closest sales representative.

Q. How do I cut HardieBacker board?

A: HardieBacker board may be cut with a carbide-tipped scoring knife, utility knife, or cutting shears (manual, electric or pneumatic).

Q. Where can I get a carbide score and snap knife?

A: Home Depot® stores and Lowe's Home Improvement Warehouses®.

Q. Which side goes up, smooth or rough?

A: Either is acceptable, but we recommend that the smooth side with the nailing pattern of every 8" on center go up.

Q. What subfloor should HardieBacker board be installed over?

A: The minimum subfloor specified is 5/8" exterior grade plywood or 23/32'' exterior grade OSB subflooring. HardieBacker board must be installed in accordance with local building codes and the floor must be engineered not to exceed the L/360 deflection criteria, including live and dead design loads, for the specific joist spacing used. HardieBacker board is not designed for use over concrete.

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Q. Why do I have to use thinset between HardieBacker board and the subfloor?

A: Dry set (ANSI 118.1) or acrylic modified thinset (ANSI 118.4) is specified between the HardieBacker board and the subfloor to eliminate any deviations between our product and the subfloor. This decreases the probability of popping or cracking tiles due to deflection and air pockets.

Q. What do you mean by ''modified thinset''?

A: The modified thinset used with our product is a fortified cement-based mortar and should specifically conform to ANSI (American National Standards Institute) A 118.4. The thinset can be fortified in a pre-mixed powder form or with a liquid additive.

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Q. Can I use liquid nails or glue with HardieBacker board?

A: No. Where HardieBacker board is being installed over a code-complying subfloor for the attachment of tile, the board is installed over a 3/32''-1/4'' thick bed of bonding mortar and then nailed down. ''Liquid Nails'' is not a bonding mortar. It is a structural adhesive generally used to bond the subfloor to the floor joists just prior to nailing. It creates a very solid joint between the surface of the floor joist and the subfloor and aids in reducing floor squeak. The properties of Liquid Nails are such that it is applied via a tube in the form of a bead-like caulking. It is not trowelable like a mortar and therefore results in high ridges with unsupported areas that can deflect under load, resulting in cracked tile.

Where HardieBacker board is being installed directly to wood or metal framing, the use of a structural adhesive in addition to mechanical fastening can be used. However, the board must be forced into the structural adhesive almost immediately upon application to insure that no ridge or crown is formed. The creation of a crown or ridge will result in an additional thickness of mortar being applied to fill in the valley created by the crown. This will require a longer curing time and result in a weaker bond between the tile and the mortar and the underlayment. The use of a structural adhesive does not result in fewer fasteners being required.

Q. What is the correct fastener pattern for installing HardieBacker board?

A: Fasten HardieBacker sheets with proper nails or screws (as listed in ''Materials Required'' in the backer installation instructions) every 8'' around the perimeter and all supporting studs. Keep fasteners between 3/8'' and 3/4'' from sheet edges and 2'' in from sheet corners.

Q. What type of fastener do you recommend for floor and wall applications of HardieBacker board?

A: In compliance with the tile industry, James Hardie recommends 1-1/4'' long galvanized or stainless steel roofing nails (0.121'' shank x 3/8'' HD) or 1-1/4'' long corrosion resistant ribbed waferhead screws (No. 8-18 x 3/8'' HD).

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Q. Why can't I get screws to sit flush with the HardieBacker board?

A: The screws that you are using do not have the power to rout out the material in order for the screw head to sit flush. Be sure to use the specified screws (1-1/4'' No.8-18 by 3/8'' HD Hi-Lo S or S-12 for metal studs, ribbed phil wafer head, self drilling, corrosion-resistant screws). If you continue to have difficulties, we recommend switching to 1-1/4'' galvanized roofing nails

Q. Why do I have to tape the joints?  What is the purpose of the 2'' wide tape?

A: The tape will help disperse any movement of the substrate, therefore decreasing the probability of popping or cracking tiles along the seams.

Q. Where can I get the 2'' wide high-strength alkali-resistant glass fiber tape?

A: Home Depot stores and Lowe's Home Improvement Warehouses.

Q. Can I put HardieBacker board over linoleum or vinyl composite tile?

A: Yes, Hardiebacker can go over linoleum or vinyl composite tile. Even though you may go over vinyl composite tile, James Hardie does not recommend you install HardieBacker board over cushioned vinyl. Follow HardieBacker floor installation instructions for complete details.

Q. Can HardieBacker 1/4'' board be used in a shower wall application? Is a vapor barrier required?

A: Yes, HardieBacker 1/4'' cement board may be used in a shower. However, we recommend HardieBacker 1/2'' if you need to make a smooth transition to drywall. The board must be mechanically fastened every 8'' on center to the wood or metal studs spaced a maximum of 16'' on center. A vapor barrier is needed if required by local building codes.

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Q. Can HardieBacker 1/4'' board be used for floor tile applications?

A: Yes, both HardieBacker 1/2'' and 1/4'' board may be used for floor tile applications. If additional height is not required for transition, consider HardieBacker 1/4'' board — which has more compressive and flexural strength than any board on the market — even when compared to 1/2'' glass mesh cement boards. HardieBacker 1/4'' 3'x5' EZ Grid® sheet comes with a recessed fastener pattern for even easier installation.

Q. Can I use HardieBacker board as a fireplace facing?

A: Yes, HardieBacker board can be used as a fireplace facing. HardieBacker 1/4'' board can be used as a component in a 1-hour fire resistive construction when installed in compliance with National Evaluation Report NER-405. HardieBacker boards are recognized as non-combustible, when tested according to ASTM E 136.

Q. Can I use HardieBacker cement board in an exterior application?

A: In accordance with National Evaluation Service Report NER-405, HardieBacker board is recognized only as an interior substrate.

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HardieBacker™ 1/2''


Q. Where do I purchase HardieBacker™ board?

A: Use the online James Hardie preferred dealer locator or call customer service at 1-888-JHARDIE for your closest sales representative.

Q. How do I cut HardieBacker board?

A: HardieBacker board may be cut with a carbide-tipped scoring knife, utility knife, or cutting shears (manual, electric or pneumatic).

Q. Where can I get a carbide score and snap knife?

A: Home Depot® stores and Lowe's Home Improvement Warehouses®.

Q. Which side goes up, smooth or rough?

A: Either is acceptable, but we recommend that the smooth side with the nailing pattern of every 8" on center go up.

Q. What subfloor should HardieBacker board be installed over?

A: The minimum subfloor specified is 5/8" exterior grade plywood or 23/32'' exterior grade OSB subflooring. HardieBacker board must be installed in accordance with local building codes and the floor must be engineered not to exceed the L/360 deflection criteria, including live and dead design loads, for the specific joist spacing used. HardieBacker board is not designed for use over concrete.

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Q. Why do I have to use thinset between HardieBacker board and the subfloor?

A: Dry set (ANSI 118.1) or acrylic modified thinset (ANSI 118.4) is specified between the HardieBacker board and the subfloor to eliminate any deviations between our product and the subfloor. This decreases the probability of popping or cracking tiles due to deflection and air pockets.

Q. What do you mean by ''modified thinset''?

A: The modified thinset used with our product is a fortified cement-based mortar and should specifically conform to ANSI (American National Standards Institute) A 118.4. The thinset can be fortified in a pre-mixed powder form or with a liquid additive.

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Q. Can I use liquid nails or glue with HardieBacker board?

A: No. Where HardieBacker board is being installed over a code-complying subfloor for the attachment of tile, the board is installed over a 3/32''-1/4'' thick bed of bonding mortar and then nailed down. ''Liquid Nails'' is not a bonding mortar. It is a structural adhesive generally used to bond the subfloor to the floor joists just prior to nailing. It creates a very solid joint between the surface of the floor joist and the subfloor and aids in reducing floor squeak. The properties of Liquid Nails are such that it is applied via a tube in the form of a bead-like caulking. It is not trowelable like a mortar and therefore results in high ridges with unsupported areas that can deflect under load, resulting in cracked tile.

Where HardieBacker board is being installed directly to wood or metal framing, the use of a structural adhesive in addition to mechanical fastening can be used. However, the board must be forced into the structural adhesive almost immediately upon application to insure that no ridge or crown is formed. The creation of a crown or ridge will result in an additional thickness of mortar being applied to fill in the valley created by the crown. This will require a longer curing time and result in a weaker bond between the tile and the mortar and the underlayment. The use of a structural adhesive does not result in fewer fasteners being required.

Q. What is the correct fastener pattern for installing HardieBacker board?

A: Fasten HardieBacker sheets with proper nails or screws (as listed in ''Materials Required'' in the backer installation instructions) every 8'' around the perimeter and all supporting studs. Keep fasteners between 3/8'' and 3/4'' from sheet edges and 2'' in from sheet corners.

Q. What type of fastener do you recommend for floor and wall applications of HardieBacker board?

A: In compliance with the tile industry, James Hardie recommends 1-1/4'' long galvanized or stainless steel roofing nails (0.121'' shank x 3/8'' HD) or 1-1/4'' long corrosion resistant ribbed waferhead screws (No. 8-18 x 3/8'' HD).

Back to Top

Q. Why can't I get screws to sit flush with the HardieBacker board?

A: The screws that you are using do not have the power to rout out the material in order for the screw head to sit flush. Be sure to use the specified screws (1-1/4'' No.8-18 by 3/8'' HD Hi-Lo S or S-12 for metal studs, ribbed phil wafer head, self drilling, corrosion-resistant screws). If you continue to have difficulties, we recommend switching to 1-1/4'' galvanized roofing nails

Q. Why do I have to tape the joints?  What is the purpose of the 2'' wide tape?

A: The tape will help disperse any movement of the substrate, therefore decreasing the probability of popping or cracking tiles along the seams.

Q. Where can I get the 2'' wide high-strength alkali-resistant glass fiber tape?

A: Home Depot stores and Lowe's Home Improvement Warehouses.

Q. Can I put HardieBacker board over linoleum or vinyl composite tile?

A: Yes, Hardiebacker can go over linoleum or vinyl composite tile. Even though you may go over vinyl composite tile, James Hardie does not recommend you install HardieBacker board over cushioned vinyl. Follow HardieBacker board floor installation instructions for complete details.

Q. Can I use HardieBacker board as a fireplace facing?

A: Yes, HardieBacker board can be used as a fireplace facing. HardieBacker 1/4'' board can be used as a component in a 1-hour fire resistive construction when installed in compliance with National Evaluation Report NER-405. HardieBacker boards are recognized as non-combustible, when tested according to ASTM E 136.

Q. Can I use HardieBacker cement board in an exterior application?

A: In accordance with National Evaluation Service Report NER-405, HardieBacker board is recognized only as an interior substrate.

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HardieWrap™ weather barrier


Q. What is HardieWrap™ weather barrier used for?

A: HardieWrap weather barrier is a water-resistive barrier, as defined by U.S. building codes. Used in residential buildings, HardieWrap weather barrier is installed over the sheathing, beneath the exterior siding (cladding) to reduce water infiltration and air infiltration, while allowing potentially damaging water to escape from exterior walls.

Q. What is HardieWrap weather barrier made of?

A: HardieWrap weather barrier is composed of high-performance, non-perforated, non-woven polyolefin with a unique coating for a balance of water holdout and breathability. HardieWrap weather barrier also has superior air resistance and tear resistance compared to the nearest competition.

Q. What code requirements does HardieWrap weather barrier meet?

A: HardieWrap weather barrier meets the requirements for all major building codes, including those as specified in ESR # 2658.

Q. How is HardieWrap weather barrier better than other housewraps?

A: In independent tests, HardieWrap weather barrier outperformed its nearest competition in each of these categories: water holdout, air penetration resistance and tear resistance.

Q. How is HardieWrap weather barrier better than felt or Grade D building paper?

A: HardieWrap weather barrier outperforms Grade D building paper (and felt) in each of these categories: water resistance, air resistance, durability and ease of installation.

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Q. What are the standard roll sizes of HardieWrap weather barrier?

A: HardieWrap weather barrier is currently (or will be available very soon) in the following roll sizes: 3' x 195', 9' x 100', 9' x 150', 10' x 100', 10' x 150'.

Q. How strong is HardieWrap weather barrier??

A: The tear strength of HardieWrap weather barrier, according to ASTM D-1117 testing procedure, is 15 lbs. MD and 18 lbs. CD. The breaking strength of HardieWrap weather barrier, according to ASTM D-882 testing procedure, is 59 lbs./in MD and 51 lbs./in CD.

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Q. How thick is HardieWrap weather barrier?

A: HardieWrap weather barrier is 11 mil thick for greater tear strength than the nearest competition.

Q. Is HardieWrap weather barrier water-resistant?

A: Yes. HardieWrap weather barrier is a water-resistive barrier and has passed ASTM D-779 testing for water resistance. Results from AATCC127 testing procedure show HardieWrap weather barrier's water resistance is >325 cm of water holdout, which is more than 50% higher than the next competition.

Q. What fire properties does HardieWrap weather barrier have?

A: HardieWrap weather barrier ranks as a Class A fire-rated product in accordance with the International Residential Building Code 2006 and International Building Code 2006, and is tested in accordance with ASTM E-84 testing procedure.

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Q. How long can HardieWrap weather barrier be exposed before siding is installed?

A: HardieWrap weather barrier has a UV stability of up to 180 days (6 months). Ensure that HardieWrap weather barrier is properly stored and handled prior to installation.

Q. Does it matter which side of HardieWrap weather barrier is installed against the structure?

A: Yes. HardieWrap weather barrier must be installed with the printed side out for best performance.

Q. How much does HardieWrap weather barrier weigh?

A: HardieWrap weather barrier weighs approximately 20 lbs./1000 sq. ft., which equates to less than 30 lbs. a roll.

Q. How much does HardieWrap weather barrier cost?

A: HardieWrap weather barrier is competitively priced. For specific information, contact a James Hardie Representative at 1-866-4HARDIE (1-866-442-7343).

Q. What type of siding can HardieWrap weather barrier solution be used under?

A: HardieWrap weather barrier can be used with any cladding material: fiber-cement, wood, wood composite, brick, stucco and vinyl, as required by local building codes. When installing HardieWrap weather barrier, follow the recommendations of the local building codes and the HardieWrap™ Installation Requirements.

Q. What type of flashing and tape are recommended for use with HardieWrap weather barrier?

A: Flexible flashings are recommended in accordance with window industry and building code requirements. HardieWrap™ Flashing and HardieWrap™ Flex Flashing are designed as part of the HardieWrap™ weather barrier solution and are installed around window openings and other penetrations. HardieWrap™ Seam Tape is also designed specifically for the HardieWrap weather barrier solution and is used for taping the vertical and horizontal seams to create the complete weather protection envelope. For complete installation instructions, please contact James Hardie Technical Services.

Q. Why is James Hardie making a housewrap?

A: James Hardie Building Products, Inc. has a mission to help you build better homes. After pioneering significantly improved siding products, James Hardie saw room for improvement in protecting the building envelope from weather. To that end, James Hardie has created high-performance HardieWrap weather barrier, HardieWrap Flashing, HardieWrap Flex Flashing and HardieWrap Seam Tape. Together, these products work to provide a high performing second layer of defense for your home from a brand you can trust.

Q. Where is HardieWrap weather barrier available?

A: HardieWrap weather barrier is available at select dealers in Georgia, North Carolina and South Carolina. For further information, please contact James Hardie Building Products.

Q. When will HardieWrap weather barrier be available in my area?

A: Contact your James Hardie Sales Representative or call James Hardie Customer Service at 1-866-4HARDIE (1-866-442-7343) for more information as to when it will be available in your area.

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HardieWrap™ Flashing


Why should I choose butyl rubber adhesive over asphalt?

Butyl rubber adhesive is more reliable than asphalt.
  • Butyl is pliable at low temperatures and can be applied to a variety of building materials at temperatures 30°F to 180°F. Asphalt becomes brittle below 40°F, reducing the ability to stick to surfaces.
  • Butyl has high cohesive strength and structural integrity that support the adhesive at elevated temperatures as high as 200°F. SBS asphalt has a narrow temperature range and often will ooze at elevated temperatures.
  • Butyl rubber adhesive contains no asphalts, VOCs (volatile organic compounds) or solvents. SBS asphalts can react with the solvents in caulk and sealant compounds, causing degradation of both products, which compromises the seal integrity reducing water resistance.


Can I use asphalt flashing with the HardieWrap™ weather barrier?

Yes, but we recommend butyl for the reasons given above.

When should I use HardieWrap™ Flashing and when should I use HardieWrap™ Flex Flashing?

HardieWrap Flashing should be used on windows and doors with straight edges. HardieWrap Flex Flashing should be used on the sill pan and custom windows or doors.

Does HardieWrap Flashing and HardieWrap Flex Flashing self-seal around fasteners?

Yes. HardieWrap Flashing and HardieWrap Flex Flashing self-seal around fasteners and are self-adhering butyl flashings which are easy to install by peel and stick application. Additional fasteners are not necessary.

What sizes do HardieWrap Flashing and HardieWrap Flex Flashing come in?

HardieWrap Flashing is available in 4", 6" or 9" widths, and are 100' long; HardieWrap Flex Flashing in 6" or 9" widths and 75' long.

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How well does HardieWrap Flashing and HardieWrap Flex Flashing stick to OSB?

HardieWrap Flashing and HardieWrap Flex Flashing adheres to OSB, provided the surface is dry, clean and free of waxes or oils. Because most OSB is dusty and waxy on the job site, we recommend – but do not require – that a primer adhesive be applied to the surface of the OSB to improve adhesion for the flashing to bond to. Refer to the HardieWrap Flashing Guide for further information about primers.

Are additional fasteners necessary to supplement flashing adhesion?

Fasteners are not required to “tack" up either HardieWrap Flashing or HardieWrap Flex Flashing. The slow tack adhesion allows for easier installation because the flashing can be repositioned without tearing the surface of the housewrap. The adhesive strength of butyl rubber becomes stronger over time and reaches full-cure in 24 hours.

How are HardieWrap Flashing and HardieWrap Flex Flashing packaged?

HardieWrap Flashing comes in individually shrink-wrapped rolls and HardieWrap Flex Flashing comes in a convenient dispenser box.

Where should HardieWrap Flashing be used?

HardieWrap Flashing is ideal for the windows, doors and utility penetrations. See the HardieWrap Flashing Guide for further details.

How long can HardieWrap Flashing and HardieWrap Flex Flashing be exposed to the environment before siding is installed?

HardieWrap Flashing and HardieWrap Flex Flashing have a UV stability of up to 180 days (6 months).

What types of siding can HardieWrap Flashing and HardieWrap Flex Flashing be used under?

  1. HardieWrap flashings can be used behind any code-compliant cladding assembly, but there exists industry best practices for some claddings, such as stucco, which require specific methods of applications which should be followed for best performance.
  2. When installing HardieWrap™ weather barrier, follow the recommendations of the local building codes and the HardieWrap Installation Requirements. For installation instructions, please go to www.hardiewrap.com.


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When will HardieWrap Flashing and HardieWrap Flex Flashing be available in my area?

It is available in Georgia, North Carolina and South Carolina, with other states to follow shortly. Contact your James Hardie Sales Representative or call James Hardie Customer Service at 1-866-4-HARDIE (1-866-442-7343) for more information.

What size flashing should I use for 2x4 and 2x6 timber construction?

For 2x4 construction, use 4" or 6" HardieWrap Flashing along with 6" HardieWrap Flex Flashing for the sill pans. For 2x6 construction, use 9" HardieWrap Flashing and 9" HardieWrap Flex Flashing.

Can I use HardieWrap™ Seam Tape in place of HardieWrap Flashing or HardieWrap Flex Flashing?

No. HardieWrap Seam Tape is specifically designed for sealing vertical and horizontal seams and small tears; it should be used when adhering HardieWrap to other materials, e.g. vinyl or aluminum window flanges.

Can I use HardieWrap flashings with other housewrap?

Yes. HardieWrap flashings are compatible with major brands of housewrap, building paper and OSB sheathing, providing they are free from excess dirt and residue.

Can I use asphalt-based flashings with HardieWrap flashings?

Yes. But we don't recommend asphalt-based flashings because they are more likely to degrade over time, reducing their resistance to water infiltration.

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Where can I get more information about HardieWrap flashing installation?

Installation instructions can be found at www.hardiewrap.com. You can also contact your James Hardie Sales Representative to find an Installation Specialist in your area or call James Hardie Customer Service at 1-866-4-HARDIE (1-866-442-7343).

What is the warranty?

HardieWrap weather barrier, HardieWrap Flashing, HardieWrap Flex Flashing and HardieWrap Seam Tape all have a 10-year limited transferable product warranty.

What is the advantage of using all HardieWrap products together?

Together, they form the HardieWrap™ weather barrier solution. HardieWrap weather barrier, HardieWrap Flashing, HardieWrap Flex Flashing and HardieWrap Seam Tape work with the cladding to form an important part of a home's weather protection envelope.

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HardieFloor™ Wet Area Solution


What is the best method for cutting HardieFloor™ Wet Area Solution?

A: A circular saw fitted with a HardieBlade™ Saw blade and HEPA dust reduction system can easily cut HardieFloor™ Wet Area Solution. If you need to make hole cuts for plumbing or electrical lines, there are several bits available that work well with HardieFloor™ Wet Area Solution. Please refer to HardieFloor™ Wet Area Solution installation instructions to determine the appropriate bit for specific applications.

What kinds of fasteners should I use to install HardieFloor™ Wet Area Solution?

A: HardieFloor™ Wet Area Solution can be installed with 6d or 8d common corrosion resistant nails. Composite deck screws can also be used and are recommended for reducing "mushrooming" and "squeaks." Please refer to HardieFloor™ Wet Area Solution installation instructions for complete guidelines on approved fasteners and schedules.

What preparations do I need to take so I can lay tile on HardieFloor™ Wet Area Solution?

A: HardieFloor™ Wet Area Solution should be swept of debris and lightly dampened with a moist sponge. The floor is then ready to apply thinset. The seams between HardieFloor™ Wet Area Solution sheets do not need to be caulked or covered with joint tape. Please refer to HardieFloor™ Wet Area Solution installation instructions for complete guidelines on installing and applying flooring to HardieFloor™ Wet Area Solution.

Do I need to treat the joints or seams between HardieFloor™ Wet Area Solution sheets?

A: No, the seams between HardieFloor™ Wet Area Solution sheets require no preparation before applying flooring. Please refer to HardieFloor™ Wet Area Solution installation instructions for complete guidelines on installing and applying flooring to HardieFloor™ Wet Area Solution.

How should I lay out HardieFloor™ Wet Area Solution?

A: HardieFloor™ Wet Area Solution should be laid out in a brick pattern like other sub-floors. Four corners of HardieFloor™ Wet Area Solution sheets should never meet. HardieFloor™ Wet Area Solution can easily be integrated with the remainder of the floor sheathing. Please refer to HardieFloor™ Wet Area Solution installation instructions for complete guidelines for lay out and installation.

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Where can HardieFloor™ Wet Area Solution be installed?

A: HardieFloor™ Wet Area Solution can be installed as as a subfloor anywhere inside a home. HardieFloor™ Wet Area Solution is specially engineered with DuraTech™ Technology for wet areas of the home like bathrooms, but it may be used in all rooms of the home. Please refer to HardieFloor™ Wet Area Solution installation instructions and Technical Data Sheet for complete guidelines for lay out and installation.

What types of flooring material can be attached to HardieFloor™ Wet Area Solution?

A: HardieFloor™ Wet Area Solution is like all good tile backerboards, it is dimensionally stable. Since it won't expand and contract like wood, tile can be applied directly to HardieFloor™ Wet Area Solution. However, it is not limited to just natural stone and tile. Carpet, hardwood, and linoleum can also be applied to HardieFloor™ Wet Area Solution.

How much does HardieFloor™ Wet Area Solution weigh?

A: One sheet of HardieFloor™ Wet Area Solution weighs 75 lbs. It is recommended that two persons carry each sheet.

How is HardieFloor™ Wet Area Solution an "all – in – one" floor?

A: HardieFloor™ Wet Area Solution was engineered with DuraTech Technology to provide the necessary strength to be the structural floor and provide moisture and mold resistance which makes it an ideal surface for adhering tile to in the wet areas of a home. A backer board does NOT need to be applied over HardieFloor™ Wet Area Solution before laying tile.

Is HardieFloor™ Wet Area Solution code approved?

A: You can use HardieFloor™ Wet Area Solution in the interior of all residential one and two family dwellings. HardieFloor™ Wet Area Solution complies with ICC-ES Acceptance Criteria 367 which stipulates product requirements for structural floors. Please refer to HardieFloor™ Wet Area Solution installation instructions and Technical Data Sheet as well as local building codes for more information on building code matters.

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How does HardieFloor™ Wet Area Solution improve indoor air-quality of a home?

The air quality of a home can be negatively impacted by the presence of mold growth. HardieFloor™ Wet Area Solution provides superior mold resistance as proven by passing both industry standard mold tests (ASTM; G21 and ASTM D 3273). Also by using HardieFloor™ Wet Area Solution, you are removing the wood based subfloor, which is a food source for mold.

Is it okay to lay tile on HardieFloor™ Wet Area Solution?

HardieFloor™ Wet Area Solution is an excellent substrate for tile and requires fewer steps to install tile. HardieFloor™ Wet Area Solution passes industry standard measures such as, the Robinson Floor Test and tile adhesion tests which are recommended by the Tile Council of America. HardieFloor™ Wet Area Solution is a stiffer material than most conventional subfloors which will provide a firm surface for tile.

What is DuraTech Technology?

DuraTech Technology is a patented innovation which allows James Hardie to make a fiber cement product with advanced structural integrity. This technology allows you to replace the wood sub-floor in wet areas with a fiber cement floor which is moisture, mold, and rot resistant.

Can I install HardieFloor™ Wet Area Solution with other sheathing types?

Yes, HardieFloor™ Wet Area Solution has been designed to be compatible with other subfloors. The tongue and groove geometry provides strength and is designed to fit into most joint profiles of other subfloors. If the jointing does not quite fit, please refer to HardieFloor™ Wet Area Solution installation instructions for alternate solutions.

Why is HardieFloor™ Wet Area Solution perfect for bathrooms, laundry rooms, and kitchens?

Bathrooms, laundry rooms, and kitchens are wet areas of the home. As a builder, you can do everything right and still have problems with moisture. Toilets overflow and water lines could leak. They happen and now you can protect the homeowner and yourself from long term damage from these types of events.

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Copyright 2008 James Hardie International Finance B.V.