HardieBacker 1/4-in Fiber Cement Backer Board, 3-ft x 5-ft

Durable fiber cement backer board engineered for wet-area installations and tile underlayment. The 3-ft x 5-ft, 1/4-in panel offers moisture and mold resistance with strong tile adhesion for floors and countertops.

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Key Features:

• Moisture + Mold Protection: Resists moisture and features MoldBlock Technology to help prevent mold damage
• Waterproof Composition: 100% waterproof throughout the board for confidence in wet areas
• Easy Cutting: Score-and-snap installation reduces dust and debris for cleaner jobs
• Versatile Underlayment: Ideal under tile, vinyl, wood, granite and other stone surfaces; for floors and countertops
• Long-Lasting Durability: Fiber cement construction with ANSI/ASTM compliant performance and a limited lifetime warranty

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Specifications Table:

Specification	Details
Series Name	HardieBacker
Actual Length (Inches)	60
Actual Thickness (Inches)	0.25
Actual Width (Inches)	36
Common Measurement (W x L)	3-ft x 5-ft
Common Thickness in Inches	1/4-in
Weight (lbs.)	28.5
Coverage Area (Sq. Feet)	15
Material	Fiber cement
Number of Sheets	1
Water Resistant	Yes
Waterproof	Yes
Sold As	Sheet
ANSI A118.9 Compliant	Yes
ASTM C1288 Compliant	Yes
CA Residents: Prop 65 Warning(s)	Yes
Warranty	Limited lifetime

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Frequently Asked Questions (FAQ):

Q: Is this board suitable for shower walls?
A: Yes, it is engineered for use in wet areas and is approved for shower walls; follow local waterproofing codes.

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Q: Can I cut it indoors without power tools?
A: Yes. Use a scoring knife for score-and-snap cuts, which minimizes dust and debris.

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Q: What are the panel dimensions and coverage?
A: Each sheet is 0.25 in thick, 36 in wide, and 60 in long, covering about 15 sq ft.

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Q: Where can it be used?
A: Use as underlayment for bathroom and kitchen floors, countertops, and other interior areas prone to moisture.

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Q: Does it come with a warranty?
A: Yes, it has a limited lifetime product warranty.

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A Clean, Confident Foundation for Luxe Surfaces

This backer board sets the stage for elevated tile and stone work with a refined, grid-textured surface that ensures crisp lines. I love its slim 1/4-inch profile—strong yet discreet—making transitions seamless in kitchens and baths. Pair it with marble hex tiles or richly grained wood-look planks to let the materials sing while the foundation quietly performs. It’s the hidden essential that brings durability and poise to sophisticated spaces.

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Build a moisture-proof, long-lasting foundation for your next tile project—add HardieBacker to your cart today.