HardieBacker HydroDefense Waterproof Fiber Cement Backer Board (3-ft x 5-ft x 0.42-in)
A 100% waterproof fiber cement backer board engineered for tile installations in wet areas. The HydroDefense composition provides strong tile adhesion, mold protection, and time-saving installation by only requiring waterproofing at joints and fasteners.
Key Features:
- Waterproof Composition: Fully waterproof through the board for reliable protection in showers and kitchens
- Strong, Stable Base: Fiber cement construction delivers unmatched strength and excellent tile adhesion
- Mold Protection: Formulated with MoldBlock Technology to resist mold and mildew growth
- Easy to Work With: Cuts clean with minimal dust; score-and-snap capable
- Time-Saving Install: Only waterproof the joints and fastenersno full-surface coating required
Specifications Table:
| Specification | Details |
| Series Name | HardieBacker with HydroDefense Technology |
| Actual Length (Inches) | 60 |
| Actual Width (Inches) | 36 |
| Actual Thickness (Inches) | 0.42 |
| Common Measurement (W x L) | 3-ft x 5-ft |
| Common Thickness in Inches | 1/2-in |
| Material | Fiber cement |
| Waterproof | Yes |
| Water Resistant | No |
| Number of Sheets | 1 |
| Sold As | Sheet |
| Coverage Area (sq ft) | 15 |
| For Use with Bathroom Floors | Yes |
| For Use with Bathroom Walls | Yes |
| For Use with Fireplace Exteriors | No |
| For Use with Garage Floors | No |
| For Use with Garage Walls | Yes |
| For Use with Kitchen Backsplashes | Yes |
| For Use with Kitchen Counters | Yes |
| For Use with Patios | No |
| For Use with Pools | No |
| For Use with Shower Floors | No |
| For Use with Shower Walls | Yes |
| For Use with Vinyl Floors | Yes |
| ANSI A118.9 Compliant | Yes |
| ASTM C1288 Compliant | Yes |
| Warranty | Limited lifetime |
| CA Residents: Prop 65 Warning(s) | Yes |
| UNSPSC | 30161500 |
Frequently Asked Questions (FAQ):
Q: Is this board truly waterproof?
A: Yes. It is 100% waterproof throughout the board and passes ANSI A118.10 waterproofness.
Q: Where can I use it?
A: Ideal for shower walls, bathroom walls, backsplashes, countertops, and other interior wet areas; not for shower pans or pools.
Q: Do I need to apply a waterproof membrane over the entire surface?
A: No. Waterproof the joints and fasteners only; follow local codes for special areas like shower pans.
Q: How do I cut and install it?
A: Use score-and-snap or power tools; fasten per manufacturer instructions and seal joints with mesh tape and thinset.
Q: What is the board size and thickness?
A: Actual size is 36 in x 60 in with 0.42 in thickness; common size 3-ft x 5-ft, 1/2-in.
A Luxe, Watertight Canvas for Tile
This backer board becomes the quiet hero behind exquisite tile, offering a seamless, waterproof foundation that elevates every surface. Its uniform, fiber-cement core gives tiles crisp definition and enduring stability. Try it behind hand-crafted subway or geometric mosaics to let the pattern sing while ensuring lasting performance. Its an essential layer for sophisticated spaces that demand beauty and resilience.
Choose HardieBacker HydroDefense to streamline your waterproofing and build a tile-ready surface that lasts.
