HardieBacker 1/4-in Fiber Cement Backer Board, 3x5 ft

HardieBacker 1/4-in fiber cement backer board delivers a durable, moisture-resistant underlayment for tile floors and countertops. Engineered with MoldBlock technology and an EZ Grid surface for clean score-and-snap cuts, it provides strong adhesion and a solid foundation in wet-area installations.

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Key Features:

• Moisture & Mold Protection: Fiber cement board with MoldBlock Technology resists moisture and mold growth in wet areas
• Easy Cutting: Score-and-snap design and EZ Grid surface minimize dust and speed installation
• Versatile Underlayment: Ideal beneath tile, vinyl, wood, granite and stone on floors and countertops
• Durable Composition: 90% Portland cement and sand for long-lasting strength and tile adhesion
• Warranty Coverage: Backed by a limited lifetime product warranty

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Specifications Table:

Specification	Details
Series Name	HardieBacker
Actual Length (Inches)	60
Actual Width (Inches)	36
Actual Thickness (Inches)	0.25
Common Measurement (W x L)	3-ft x 5-ft
Common Thickness	1/4-in
Coverage Area (Sq. Feet)	15
Material	Fiber cement (approx. 90% Portland cement and sand)
Number of Sheets	1
Water Resistant	Yes
Waterproof	Yes
Sold As	Sheet
ANSI A118.9 Compliant	Yes
ASTM C1288 Compliant	Yes
Warranty	Limited lifetime
For Use with Bathroom Floors	Yes
For Use with Shower Walls	Yes
For Use with Kitchen Counters	Yes
For Use with Vinyl Floors	Yes
For Use with Kitchen Backsplashes	No
For Use with Fireplace Exteriors	No
For Use with Garage Floors	No
For Use with Garage Walls	No
For Use with Patios	No
For Use with Pools	No
For Use with Shower Floors	No
Weight (lbs.)	28.5

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Frequently Asked Questions (FAQ):

Q: Is this board waterproof or just water-resistant?
A: It is listed as waterproof and water-resistant; always follow local codes and use appropriate waterproofing for seams and penetrations.

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Q: Where can I use this 1/4-in board?
A: Use as an underlayment for floors and countertops; for walls and showers, follow manufacturer guidance and local codes.

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Q: How do I cut the board?
A: Score the face with a carbide scoring knife and snap along the line for clean, low-dust cuts.

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Q: What are the actual dimensions and coverage?
A: 0.25 in thick x 36 in wide x 60 in long; one sheet covers approximately 15 sq ft.

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Q: What fasteners and mortar should I use?
A: Use appropriate backer board screws or galvanized roofing nails and a polymer-modified thinset mortar per manufacturer instructions.

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A Clean, Confident Foundation for Tile Perfection

This backer board creates an impeccably smooth, steadfast canvas that lets your tilework sing. I love the subtle grid—an elegant guide that keeps lines razor-true while cutting. Float it beneath large-format marble or warm wood-look planks to elevate everyday rooms with a spa-worthy finish. It’s the quiet luxury essential that makes craftsmanship feel effortless.

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Build a moisture-tough, tile-ready surface today with HardieBacker 1/4-in—add to cart and start your project with confidence.